diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 6761367b..fc466dbe 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -73,13 +73,22 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.buildExpectationResult = jRequire.buildExpectationResult(j$);
     j$.noopTimer = jRequire.noopTimer();
     j$.JsApiReporter = jRequire.JsApiReporter(j$);
-    j$.matchersUtil = jRequire.matchersUtil(j$);
+    j$.asymmetricEqualityTesterArgCompatShim = jRequire.asymmetricEqualityTesterArgCompatShim(
+      j$
+    );
+    j$.makePrettyPrinter = jRequire.makePrettyPrinter(j$);
+    j$.pp = j$.makePrettyPrinter();
+    j$.MatchersUtil = jRequire.MatchersUtil(j$);
+    j$.matchersUtil = new j$.MatchersUtil({
+      customTesters: [],
+      pp: j$.pp
+    });
+
     j$.ObjectContaining = jRequire.ObjectContaining(j$);
     j$.ArrayContaining = jRequire.ArrayContaining(j$);
     j$.ArrayWithExactContents = jRequire.ArrayWithExactContents(j$);
     j$.MapContaining = jRequire.MapContaining(j$);
     j$.SetContaining = jRequire.SetContaining(j$);
-    j$.pp = jRequire.pp(j$);
     j$.QueueRunner = jRequire.QueueRunner(j$);
     j$.ReportDispatcher = jRequire.ReportDispatcher(j$);
     j$.Spec = jRequire.Spec(j$);
@@ -97,6 +106,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.DiffBuilder = jRequire.DiffBuilder(j$);
     j$.NullDiffBuilder = jRequire.NullDiffBuilder(j$);
     j$.ObjectPath = jRequire.ObjectPath(j$);
+    j$.MismatchTree = jRequire.MismatchTree(j$);
     j$.GlobalErrors = jRequire.GlobalErrors(j$);
 
     j$.Truthy = jRequire.Truthy(j$);
@@ -1188,6 +1198,7 @@ getJasmineRequireObj().Env = function(j$) {
       }
       var customMatchers =
         runnableResources[currentRunnable().id].customMatchers;
+
       for (var matcherName in matchersToAdd) {
         customMatchers[matcherName] = matchersToAdd[matcherName];
       }
@@ -1201,11 +1212,24 @@ getJasmineRequireObj().Env = function(j$) {
       }
       var customAsyncMatchers =
         runnableResources[currentRunnable().id].customAsyncMatchers;
+
       for (var matcherName in matchersToAdd) {
         customAsyncMatchers[matcherName] = matchersToAdd[matcherName];
       }
     };
 
+    this.addCustomObjectFormatter = function(formatter) {
+      if (!currentRunnable()) {
+        throw new Error(
+          'Custom object formatters must be added in a before function or a spec'
+        );
+      }
+
+      runnableResources[currentRunnable().id].customObjectFormatters.push(
+        formatter
+      );
+    };
+
     j$.Expectation.addCoreMatchers(j$.matchers);
     j$.Expectation.addAsyncCoreMatchers(j$.asyncMatchers);
 
@@ -1219,10 +1243,28 @@ getJasmineRequireObj().Env = function(j$) {
       return 'suite' + nextSuiteId++;
     };
 
+    var makePrettyPrinter = function() {
+      var customObjectFormatters =
+        runnableResources[currentRunnable().id].customObjectFormatters;
+      return j$.makePrettyPrinter(customObjectFormatters);
+    };
+
+    var makeMatchersUtil = function() {
+      var customEqualityTesters =
+        runnableResources[currentRunnable().id].customEqualityTesters;
+      return new j$.MatchersUtil({
+        customTesters: customEqualityTesters,
+        pp: makePrettyPrinter()
+      });
+    };
+
     var expectationFactory = function(actual, spec) {
+      var customEqualityTesters =
+        runnableResources[spec.id].customEqualityTesters;
+
       return j$.Expectation.factory({
-        util: j$.matchersUtil,
-        customEqualityTesters: runnableResources[spec.id].customEqualityTesters,
+        matchersUtil: makeMatchersUtil(),
+        customEqualityTesters: customEqualityTesters,
         customMatchers: runnableResources[spec.id].customMatchers,
         actual: actual,
         addExpectationResult: addExpectationResult
@@ -1261,7 +1303,7 @@ getJasmineRequireObj().Env = function(j$) {
 
     var asyncExpectationFactory = function(actual, spec, runableType) {
       return j$.Expectation.asyncFactory({
-        util: j$.matchersUtil,
+        matchersUtil: makeMatchersUtil(),
         customEqualityTesters: runnableResources[spec.id].customEqualityTesters,
         customAsyncMatchers: runnableResources[spec.id].customAsyncMatchers,
         actual: actual,
@@ -1290,7 +1332,8 @@ getJasmineRequireObj().Env = function(j$) {
         customMatchers: {},
         customAsyncMatchers: {},
         customSpyStrategies: {},
-        defaultStrategyFn: undefined
+        defaultStrategyFn: undefined,
+        customObjectFormatters: []
       };
 
       if (runnableResources[parentRunnableId]) {
@@ -2083,7 +2126,7 @@ getJasmineRequireObj().Env = function(j$) {
           message += error;
         } else {
           // pretty print all kind of objects. This includes arrays.
-          message += j$.pp(error);
+          message += makePrettyPrinter()(error);
         }
       }
 
@@ -2311,7 +2354,7 @@ getJasmineRequireObj().ArrayContaining = function(j$) {
     this.sample = sample;
   }
 
-  ArrayContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  ArrayContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isArray_(this.sample)) {
       throw new Error('You must provide an array to arrayContaining, not ' + j$.pp(this.sample) + '.');
     }
@@ -2325,7 +2368,7 @@ getJasmineRequireObj().ArrayContaining = function(j$) {
 
     for (var i = 0; i < this.sample.length; i++) {
       var item = this.sample[i];
-      if (!j$.matchersUtil.contains(other, item, customTesters)) {
+      if (!matchersUtil.contains(other, item)) {
         return false;
       }
     }
@@ -2333,8 +2376,8 @@ getJasmineRequireObj().ArrayContaining = function(j$) {
     return true;
   };
 
-  ArrayContaining.prototype.jasmineToString = function () {
-    return '<jasmine.arrayContaining(' + j$.pp(this.sample) +')>';
+  ArrayContaining.prototype.jasmineToString = function (pp) {
+    return '<jasmine.arrayContaining(' + pp(this.sample) +')>';
   };
 
   return ArrayContaining;
@@ -2346,7 +2389,7 @@ getJasmineRequireObj().ArrayWithExactContents = function(j$) {
     this.sample = sample;
   }
 
-  ArrayWithExactContents.prototype.asymmetricMatch = function(other, customTesters) {
+  ArrayWithExactContents.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isArray_(this.sample)) {
       throw new Error('You must provide an array to arrayWithExactContents, not ' + j$.pp(this.sample) + '.');
     }
@@ -2357,7 +2400,7 @@ getJasmineRequireObj().ArrayWithExactContents = function(j$) {
 
     for (var i = 0; i < this.sample.length; i++) {
       var item = this.sample[i];
-      if (!j$.matchersUtil.contains(other, item, customTesters)) {
+      if (!matchersUtil.contains(other, item)) {
         return false;
       }
     }
@@ -2365,8 +2408,8 @@ getJasmineRequireObj().ArrayWithExactContents = function(j$) {
     return true;
   };
 
-  ArrayWithExactContents.prototype.jasmineToString = function() {
-    return '<jasmine.arrayWithExactContents ' + j$.pp(this.sample) + '>';
+  ArrayWithExactContents.prototype.jasmineToString = function(pp) {
+    return '<jasmine.arrayWithExactContents(' + pp(this.sample) + ')>';
   };
 
   return ArrayWithExactContents;
@@ -2422,7 +2465,7 @@ getJasmineRequireObj().MapContaining = function(j$) {
     this.sample = sample;
   }
 
-  MapContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  MapContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isMap(other)) return false;
 
     var hasAllMatches = true;
@@ -2432,8 +2475,8 @@ getJasmineRequireObj().MapContaining = function(j$) {
       var hasMatch = false;
       j$.util.forEachBreakable(other, function(oBreakLoop, oValue, oKey) {
         if (
-          j$.matchersUtil.equals(oKey, key, customTesters)
-          && j$.matchersUtil.equals(oValue, value, customTesters)
+          matchersUtil.equals(oKey, key)
+          && matchersUtil.equals(oValue, value)
         ) {
           hasMatch = true;
           oBreakLoop();
@@ -2448,8 +2491,8 @@ getJasmineRequireObj().MapContaining = function(j$) {
     return hasAllMatches;
   };
 
-  MapContaining.prototype.jasmineToString = function() {
-    return '<jasmine.mapContaining(' + j$.pp(this.sample) + ')>';
+  MapContaining.prototype.jasmineToString = function(pp) {
+    return '<jasmine.mapContaining(' + pp(this.sample) + ')>';
   };
 
   return MapContaining;
@@ -2512,13 +2555,13 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     return hasProperty(getPrototype(obj), property);
   }
 
-  ObjectContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  ObjectContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (typeof(this.sample) !== 'object') { throw new Error('You must provide an object to objectContaining, not \''+this.sample+'\'.'); }
     if (typeof(other) !== 'object') { return false; }
 
     for (var property in this.sample) {
       if (!hasProperty(other, property) ||
-          !j$.matchersUtil.equals(this.sample[property], other[property], customTesters)) {
+          !matchersUtil.equals(this.sample[property], other[property])) {
         return false;
       }
     }
@@ -2526,10 +2569,10 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     return true;
   };
 
-  ObjectContaining.prototype.valuesForDiff_ = function(other) {
+  ObjectContaining.prototype.valuesForDiff_ = function(other, pp) {
     if (!j$.isObject_(other)) {
       return {
-        self: this.jasmineToString(),
+        self: this.jasmineToString(pp),
         other: other
       };
     }
@@ -2547,8 +2590,8 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     };
   };
 
-  ObjectContaining.prototype.jasmineToString = function() {
-    return '<jasmine.objectContaining(' + j$.pp(this.sample) + ')>';
+  ObjectContaining.prototype.jasmineToString = function(pp) {
+    return '<jasmine.objectContaining(' + pp(this.sample) + ')>';
   };
 
   return ObjectContaining;
@@ -2563,17 +2606,17 @@ getJasmineRequireObj().SetContaining = function(j$) {
     this.sample = sample;
   }
 
-  SetContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  SetContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isSet(other)) return false;
 
     var hasAllMatches = true;
     j$.util.forEachBreakable(this.sample, function(breakLoop, item) {
       // for each item in `sample` there should be at least one matching item in `other`
-      // (not using `j$.matchersUtil.contains` because it compares set members by reference,
+      // (not using `matchersUtil.contains` because it compares set members by reference,
       // not by deep value equality)
       var hasMatch = false;
       j$.util.forEachBreakable(other, function(oBreakLoop, oItem) {
-        if (j$.matchersUtil.equals(oItem, item, customTesters)) {
+        if (matchersUtil.equals(oItem, item)) {
           hasMatch = true;
           oBreakLoop();
         }
@@ -2587,8 +2630,8 @@ getJasmineRequireObj().SetContaining = function(j$) {
     return hasAllMatches;
   };
 
-  SetContaining.prototype.jasmineToString = function() {
-    return '<jasmine.setContaining(' + j$.pp(this.sample) + ')>';
+  SetContaining.prototype.jasmineToString = function(pp) {
+    return '<jasmine.setContaining(' + pp(this.sample) + ')>';
   };
 
   return SetContaining;
@@ -2630,6 +2673,112 @@ getJasmineRequireObj().Truthy = function(j$) {
   return Truthy;
 };
 
+getJasmineRequireObj().asymmetricEqualityTesterArgCompatShim = function(j$) {
+  /*
+    Older versions of Jasmine passed an array of custom equality testers as the
+    second argument to each asymmetric equality tester's `asymmetricMatch`
+    method. Newer versions will pass a `MatchersUtil` instance. The
+    asymmetricEqualityTesterArgCompatShim allows for a graceful migration from
+    the old interface to the new by "being" both an array of custom equality
+    testers and a `MatchersUtil` at the same time.
+
+    This code should be removed in the next major release.
+   */
+
+  var likelyArrayProps = [
+    'concat',
+    'constructor',
+    'copyWithin',
+    'entries',
+    'every',
+    'fill',
+    'filter',
+    'find',
+    'findIndex',
+    'flat',
+    'flatMap',
+    'forEach',
+    'includes',
+    'indexOf',
+    'join',
+    'keys',
+    'lastIndexOf',
+    'length',
+    'map',
+    'pop',
+    'push',
+    'reduce',
+    'reduceRight',
+    'reverse',
+    'shift',
+    'slice',
+    'some',
+    'sort',
+    'splice',
+    'toLocaleString',
+    'toSource',
+    'toString',
+    'unshift',
+    'values'
+  ];
+
+  function asymmetricEqualityTesterArgCompatShim(
+    matchersUtil,
+    customEqualityTesters
+  ) {
+    var self = Object.create(matchersUtil),
+      props,
+      i,
+      k;
+
+    copy(self, customEqualityTesters, 'length');
+
+    for (i = 0; i < customEqualityTesters.length; i++) {
+      copy(self, customEqualityTesters, i);
+    }
+
+    var props = arrayProps();
+
+    for (i = 0; i < props.length; i++) {
+      k = props[i];
+      if (k !== 'length') {
+        copy(self, Array.prototype, k);
+      }
+    }
+
+    return self;
+  }
+
+  function copy(dest, src, propName) {
+    Object.defineProperty(dest, propName, {
+      get: function() {
+        return src[propName];
+      }
+    });
+  }
+
+  function arrayProps() {
+    var props, a, k;
+
+    if (!Object.getOwnPropertyDescriptors) {
+      return likelyArrayProps.filter(function(k) {
+        return Array.prototype.hasOwnProperty(k);
+      });
+    }
+
+    props = Object.getOwnPropertyDescriptors(Array.prototype);
+    a = [];
+
+    for (k in props) {
+      a.push(k);
+    }
+
+    return a;
+  }
+
+  return asymmetricEqualityTesterArgCompatShim;
+};
+
 getJasmineRequireObj().CallTracker = function(j$) {
   /**
    * @namespace Spy#calls
@@ -3476,7 +3625,7 @@ getJasmineRequireObj().Expectation = function(j$) {
     return result;
   }
 
-  function negatedFailureMessage(result, matcherName, args, util) {
+  function negatedFailureMessage(result, matcherName, args, matchersUtil) {
     if (result.message) {
       if (j$.isFunction_(result.message)) {
         return result.message();
@@ -3488,7 +3637,7 @@ getJasmineRequireObj().Expectation = function(j$) {
     args = args.slice();
     args.unshift(true);
     args.unshift(matcherName);
-    return util.buildFailureMessage.apply(null, args);
+    return matchersUtil.buildFailureMessage.apply(matchersUtil, args);
   }
 
   function negate(result) {
@@ -3570,7 +3719,7 @@ getJasmineRequireObj().ExpectationFilterChain = function() {
     result,
     matcherName,
     args,
-    util
+    matchersUtil
   ) {
     return this.callFirst_('buildFailureMessage', arguments).result;
   };
@@ -3688,7 +3837,9 @@ getJasmineRequireObj().buildExpectationResult = function(j$) {
 
 getJasmineRequireObj().Expector = function(j$) {
   function Expector(options) {
-    this.util = options.util || { buildFailureMessage: function() {} };
+    this.matchersUtil = options.matchersUtil || {
+      buildFailureMessage: function() {}
+    };
     this.customEqualityTesters = options.customEqualityTesters || [];
     this.actual = options.actual;
     this.addExpectationResult = options.addExpectationResult || function() {};
@@ -3706,7 +3857,7 @@ getJasmineRequireObj().Expector = function(j$) {
 
     this.args.unshift(this.actual);
 
-    var matcher = matcherFactory(this.util, this.customEqualityTesters);
+    var matcher = matcherFactory(this.matchersUtil, this.customEqualityTesters);
     var comparisonFunc = this.filters.selectComparisonFunc(matcher);
     return comparisonFunc || matcher.compare;
   };
@@ -3722,7 +3873,7 @@ getJasmineRequireObj().Expector = function(j$) {
       result,
       this.matcherName,
       this.args,
-      this.util,
+      this.matchersUtil,
       defaultMessage
     );
     return this.filters.modifyFailureMessage(msg || defaultMessage());
@@ -3732,7 +3883,10 @@ getJasmineRequireObj().Expector = function(j$) {
         var args = self.args.slice();
         args.unshift(false);
         args.unshift(self.matcherName);
-        return self.util.buildFailureMessage.apply(null, args);
+        return self.matchersUtil.buildFailureMessage.apply(
+          self.matchersUtil,
+          args
+        );
       } else if (j$.isFunction_(result.message)) {
         return result.message();
       } else {
@@ -3856,7 +4010,8 @@ getJasmineRequireObj().GlobalErrors = function(j$) {
 
         var browserRejectionHandler = function browserRejectionHandler(event) {
           if (j$.isError_(event.reason)) {
-            event.reason.jasmineMessage = 'Unhandled promise rejection: ' + event.reason;
+            event.reason.jasmineMessage =
+              'Unhandled promise rejection: ' + event.reason;
             onerror(event.reason);
           } else {
             onerror('Unhandled promise rejection: ' + event.reason);
@@ -3906,7 +4061,7 @@ getJasmineRequireObj().toBeRejected = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeRejected();
    */
-  return function toBeRejected(util) {
+  return function toBeRejected() {
     return {
       compare: function(actual) {
         if (!j$.isPromiseLike(actual)) {
@@ -3934,7 +4089,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeRejectedWith({prop: 'value'});
    */
-  return function toBeRejectedWith(util, customEqualityTesters) {
+  return function toBeRejectedWith(matchersUtil) {
     return {
       compare: function(actualPromise, expectedValue) {
         if (!j$.isPromiseLike(actualPromise)) {
@@ -3944,7 +4099,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
         function prefix(passed) {
           return 'Expected a promise ' +
             (passed ? 'not ' : '') +
-            'to be rejected with ' + j$.pp(expectedValue);
+            'to be rejected with ' + matchersUtil.pp(expectedValue);
         }
 
         return actualPromise.then(
@@ -3955,7 +4110,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
           };
         },
         function(actualValue) {
-          if (util.equals(actualValue, expectedValue, customEqualityTesters)) {
+          if (matchersUtil.equals(actualValue, expectedValue)) {
             return {
               pass: true,
               message: prefix(true) + '.'
@@ -3963,7 +4118,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
           } else {
             return {
               pass: false,
-              message: prefix(false) + ' but it was rejected with ' + j$.pp(actualValue) + '.'
+              message: prefix(false) + ' but it was rejected with ' + matchersUtil.pp(actualValue) + '.'
             };
           }
         }
@@ -3989,14 +4144,14 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
    * await expectAsync(aPromise).toBeRejectedWithError('Error message');
    * return expectAsync(aPromise).toBeRejectedWithError(/Error message/);
    */
-  return function toBeRejectedWithError() {
+  return function toBeRejectedWithError(matchersUtil) {
     return {
       compare: function(actualPromise, arg1, arg2) {
         if (!j$.isPromiseLike(actualPromise)) {
           throw new Error('Expected toBeRejectedWithError to be called on a promise.');
         }
 
-        var expected = getExpectedFromArgs(arg1, arg2);
+        var expected = getExpectedFromArgs(arg1, arg2, matchersUtil);
 
         return actualPromise.then(
           function() {
@@ -4005,15 +4160,15 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
               message: 'Expected a promise to be rejected but it was resolved.'
             };
           },
-          function(actualValue) { return matchError(actualValue, expected); }
+          function(actualValue) { return matchError(actualValue, expected, matchersUtil); }
         );
       }
     };
   };
 
-  function matchError(actual, expected) {
+  function matchError(actual, expected, matchersUtil) {
     if (!j$.isError_(actual)) {
-      return fail(expected, 'rejected with ' + j$.pp(actual));
+      return fail(expected, 'rejected with ' + matchersUtil.pp(actual));
     }
 
     if (!(actual instanceof expected.error)) {
@@ -4030,7 +4185,7 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
       return pass(expected);
     }
 
-    return fail(expected, 'rejected with ' + j$.pp(actual));
+    return fail(expected, 'rejected with ' + matchersUtil.pp(actual));
   }
 
   function pass(expected) {
@@ -4048,7 +4203,7 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
   }
 
 
-  function getExpectedFromArgs(arg1, arg2) {
+  function getExpectedFromArgs(arg1, arg2, matchersUtil) {
     var error, message;
 
     if (isErrorConstructor(arg1)) {
@@ -4062,7 +4217,7 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
     return {
       error: error,
       message: message,
-      printValue: j$.fnNameFor(error) + (typeof message === 'undefined' ? '' : ': ' + j$.pp(message))
+      printValue: j$.fnNameFor(error) + (typeof message === 'undefined' ? '' : ': ' + matchersUtil.pp(message))
     };
   }
 
@@ -4083,7 +4238,7 @@ getJasmineRequireObj().toBeResolved = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeResolved();
    */
-  return function toBeResolved(util) {
+  return function toBeResolved() {
     return {
       compare: function(actual) {
         if (!j$.isPromiseLike(actual)) {
@@ -4112,7 +4267,7 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeResolvedTo({prop: 'value'});
    */
-  return function toBeResolvedTo(util, customEqualityTesters) {
+  return function toBeResolvedTo(matchersUtil) {
     return {
       compare: function(actualPromise, expectedValue) {
         if (!j$.isPromiseLike(actualPromise)) {
@@ -4122,12 +4277,12 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
         function prefix(passed) {
           return 'Expected a promise ' +
             (passed ? 'not ' : '') +
-            'to be resolved to ' + j$.pp(expectedValue);
+            'to be resolved to ' + matchersUtil.pp(expectedValue);
         }
 
         return actualPromise.then(
           function(actualValue) {
-            if (util.equals(actualValue, expectedValue, customEqualityTesters)) {
+            if (matchersUtil.equals(actualValue, expectedValue)) {
               return {
                 pass: true,
                 message: prefix(true) + '.'
@@ -4135,7 +4290,7 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
             } else {
               return {
                 pass: false,
-                message: prefix(false) + ' but it was resolved to ' + j$.pp(actualValue) + '.'
+                message: prefix(false) + ' but it was resolved to ' + matchersUtil.pp(actualValue) + '.'
               };
             }
           },
@@ -4151,19 +4306,54 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
   };
 };
 
-getJasmineRequireObj().DiffBuilder = function(j$) {
-  return function DiffBuilder() {
-    var path = new j$.ObjectPath(),
-        mismatches = [];
+getJasmineRequireObj().DiffBuilder = function (j$) {
+  return function DiffBuilder(config) {
+    var prettyPrinter = (config || {}).prettyPrinter || j$.makePrettyPrinter(),
+      mismatches = new j$.MismatchTree(),
+      path = new j$.ObjectPath(),
+      actualRoot = undefined,
+      expectedRoot = undefined;
 
     return {
-      record: function (actual, expected, formatter) {
-        formatter = formatter || defaultFormatter;
-        mismatches.push(formatter(actual, expected, path));
+      setRoots: function (actual, expected) {
+        actualRoot = actual;
+        expectedRoot = expected;
+      },
+
+      recordMismatch: function (formatter) {
+        mismatches.add(path, formatter);
       },
 
       getMessage: function () {
-        return mismatches.join('\n');
+        var messages = [];
+
+        mismatches.traverse(function (path, isLeaf, formatter) {
+          var actualCustom, expectedCustom, useCustom,
+            actual = path.dereference(actualRoot),
+            expected = path.dereference(expectedRoot);
+
+          if (formatter) {
+            messages.push(formatter(actual, expected, path, prettyPrinter));
+            return true;
+          }
+
+          actualCustom = prettyPrinter.customFormat_(actual);
+          expectedCustom = prettyPrinter.customFormat_(expected);
+          useCustom = !(j$.util.isUndefined(actualCustom) && j$.util.isUndefined(expectedCustom));
+
+          if (useCustom) {
+            messages.push(wrapPrettyPrinted(actualCustom, expectedCustom, path));
+            return false; // don't recurse further
+          }
+
+          if (isLeaf) {
+            messages.push(defaultFormatter(actual, expected, path, prettyPrinter));
+          }
+
+          return true;
+        });
+
+        return messages.join('\n');
       },
 
       withPath: function (pathComponent, block) {
@@ -4174,86 +4364,118 @@ getJasmineRequireObj().DiffBuilder = function(j$) {
       }
     };
 
-    function defaultFormatter (actual, expected, path) {
+    function defaultFormatter(actual, expected, path, prettyPrinter) {
+      return wrapPrettyPrinted(prettyPrinter(actual), prettyPrinter(expected), path);
+    }
+
+    function wrapPrettyPrinted(actual, expected, path) {
       return 'Expected ' +
         path + (path.depth() ? ' = ' : '') +
-        j$.pp(actual) +
+        actual +
         ' to equal ' +
-        j$.pp(expected) +
+        expected +
         '.';
     }
   };
 };
 
-getJasmineRequireObj().matchersUtil = function(j$) {
-  // TODO: what to do about jasmine.pp not being inject? move to JSON.stringify? gut PrettyPrinter?
+getJasmineRequireObj().MatchersUtil = function(j$) {
+  // TODO: convert all uses of j$.pp to use the injected pp
 
-  return {
-    equals: equals,
+  /**
+   * _Note:_ Do not construct this directly. Jasmine will construct one and
+   * pass it to matchers and asymmetric equality testers.
+   * @name MatchersUtil
+   * @since 2.0.0
+   * @classdesc Utilities for use in implementing matchers
+   * @constructor
+   */
+  function MatchersUtil(options) {
+    options = options || {};
+    this.customTesters_ = options.customTesters || [];
+    /**
+     * Formats a value for use in matcher failure messages and similar contexts,
+     * taking into account the current set of custom value formatters.
+     * @function
+     * @name MatchersUtil#pp
+     * @param {*} value The value to pretty-print
+     * @return {string} The pretty-printed value
+     */
+    this.pp = options.pp || function() {};
+  };
 
-    contains: function(haystack, needle, customTesters) {
-      customTesters = customTesters || [];
-
-      if (j$.isSet(haystack)) {
-        return haystack.has(needle);
-      }
-
-      if ((Object.prototype.toString.apply(haystack) === '[object Array]') ||
-        (!!haystack && !haystack.indexOf))
-      {
-        for (var i = 0; i < haystack.length; i++) {
-          if (equals(haystack[i], needle, customTesters)) {
-            return true;
-          }
-        }
-        return false;
-      }
-
-      return !!haystack && haystack.indexOf(needle) >= 0;
-    },
-
-    buildFailureMessage: function() {
-      var args = Array.prototype.slice.call(arguments, 0),
-        matcherName = args[0],
-        isNot = args[1],
-        actual = args[2],
-        expected = args.slice(3),
-        englishyPredicate = matcherName.replace(/[A-Z]/g, function(s) { return ' ' + s.toLowerCase(); });
-
-      var message = 'Expected ' +
-        j$.pp(actual) +
-        (isNot ? ' not ' : ' ') +
-        englishyPredicate;
-
-      if (expected.length > 0) {
-        for (var i = 0; i < expected.length; i++) {
-          if (i > 0) {
-            message += ',';
-          }
-          message += ' ' + j$.pp(expected[i]);
-        }
-      }
-
-      return message + '.';
+  /**
+   * Determines whether `haystack` contains `needle`, using the same comparison
+   * logic as {@link MatchersUtil#equals}.
+   * @function
+   * @name MatchersUtil#contains
+   * @param {*} haystack The collection to search
+   * @param {*} needle The value to search for
+   * @param [customTesters] An array of custom equality testers
+   * @returns {boolean} True if `needle` was found in `haystack`
+   */
+  MatchersUtil.prototype.contains = function(haystack, needle, customTesters) {
+    if (j$.isSet(haystack)) {
+      return haystack.has(needle);
     }
+
+    if ((Object.prototype.toString.apply(haystack) === '[object Array]') ||
+      (!!haystack && !haystack.indexOf))
+    {
+      for (var i = 0; i < haystack.length; i++) {
+        if (this.equals(haystack[i], needle, customTesters)) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    return !!haystack && haystack.indexOf(needle) >= 0;
+  };
+
+  MatchersUtil.prototype.buildFailureMessage = function() {
+    var self = this;
+    var args = Array.prototype.slice.call(arguments, 0),
+      matcherName = args[0],
+      isNot = args[1],
+      actual = args[2],
+      expected = args.slice(3),
+      englishyPredicate = matcherName.replace(/[A-Z]/g, function(s) { return ' ' + s.toLowerCase(); });
+
+    var message = 'Expected ' +
+      self.pp(actual) +
+      (isNot ? ' not ' : ' ') +
+      englishyPredicate;
+
+    if (expected.length > 0) {
+      for (var i = 0; i < expected.length; i++) {
+        if (i > 0) {
+          message += ',';
+        }
+        message += ' ' + self.pp(expected[i]);
+      }
+    }
+
+    return message + '.';
   };
 
   function isAsymmetric(obj) {
     return obj && j$.isA_('Function', obj.asymmetricMatch);
   }
 
-  function asymmetricDiff(a, b, aStack, bStack, customTesters, diffBuilder) {
+  MatchersUtil.prototype.asymmetricDiff_ = function(a, b, aStack, bStack, customTesters, diffBuilder) {
     if (j$.isFunction_(b.valuesForDiff_)) {
       var values = b.valuesForDiff_(a);
-      eq(values.other, values.self, aStack, bStack, customTesters, diffBuilder);
+      this.eq_(values.other, values.self, aStack, bStack, customTesters, diffBuilder);
     } else {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
     }
-  }
+  };
 
-  function asymmetricMatch(a, b, aStack, bStack, customTesters, diffBuilder) {
+  MatchersUtil.prototype.asymmetricMatch_ = function(a, b, aStack, bStack, customTesters, diffBuilder) {
     var asymmetricA = isAsymmetric(a),
         asymmetricB = isAsymmetric(b),
+        shim = j$.asymmetricEqualityTesterArgCompatShim(this, customTesters),
         result;
 
     if (asymmetricA && asymmetricB) {
@@ -4261,37 +4483,56 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     }
 
     if (asymmetricA) {
-      result = a.asymmetricMatch(b, customTesters);
+      result = a.asymmetricMatch(b, shim);
       if (!result) {
         // TODO: Do we want to build an asymmetric diff when the actual was an
         // asymmeteric equality tester? Might be confusing.
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
 
     if (asymmetricB) {
-      result = b.asymmetricMatch(a, customTesters);
+      result = b.asymmetricMatch(a, shim);
       if (!result) {
-        asymmetricDiff(a, b, aStack, bStack, customTesters, diffBuilder);
+        this.asymmetricDiff_(a, b, aStack, bStack, customTesters, diffBuilder);
       }
       return result;
     }
-  }
+  };
 
-  function equals(a, b, customTesters, diffBuilder) {
-    customTesters = customTesters || [];
+  /**
+   * Determines whether two values are deeply equal to each other.
+   * @function
+   * @name MatchersUtil#equals
+   * @param {*} a The first value to compare
+   * @param {*} b The second value to compare
+   * @param [customTesters] An array of custom equality testers
+   * @returns {boolean} True if the values are equal
+   */
+  MatchersUtil.prototype.equals = function(a, b, customTestersOrDiffBuilder, diffBuilderOrNothing) {
+    var customTesters, diffBuilder;
+
+    if (isDiffBuilder(customTestersOrDiffBuilder)) {
+      diffBuilder = customTestersOrDiffBuilder;
+    } else {
+      customTesters = customTestersOrDiffBuilder;
+      diffBuilder = diffBuilderOrNothing;
+    }
+
+    customTesters = customTesters || this.customTesters_;
     diffBuilder = diffBuilder || j$.NullDiffBuilder();
+    diffBuilder.setRoots(a, b);
 
-    return eq(a, b, [], [], customTesters, diffBuilder);
-  }
+    return this.eq_(a, b, [], [], customTesters, diffBuilder);
+  };
 
   // Equality function lovingly adapted from isEqual in
   //   [Underscore](http://underscorejs.org)
-  function eq(a, b, aStack, bStack, customTesters, diffBuilder) {
-    var result = true, i;
+  MatchersUtil.prototype.eq_ = function(a, b, aStack, bStack, customTesters, diffBuilder) {
+    var result = true, self = this, i;
 
-    var asymmetricResult = asymmetricMatch(a, b, aStack, bStack, customTesters, diffBuilder);
+    var asymmetricResult = this.asymmetricMatch_(a, b, aStack, bStack, customTesters, diffBuilder);
     if (!j$.util.isUndefined(asymmetricResult)) {
       return asymmetricResult;
     }
@@ -4300,7 +4541,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       var customTesterResult = customTesters[i](a, b);
       if (!j$.util.isUndefined(customTesterResult)) {
         if (!customTesterResult) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return customTesterResult;
       }
@@ -4309,7 +4550,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     if (a instanceof Error && b instanceof Error) {
       result = a.message == b.message;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -4319,7 +4560,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     if (a === b) {
       result = a !== 0 || 1 / a == 1 / b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -4327,13 +4568,13 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     if (a === null || b === null) {
       result = a === b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     var className = Object.prototype.toString.call(a);
     if (className != Object.prototype.toString.call(b)) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
     switch (className) {
@@ -4343,7 +4584,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
         // equivalent to `new String("5")`.
         result = a == String(b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Number]':
@@ -4351,7 +4592,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
         // other numeric values.
         result = a != +a ? b != +b : (a === 0 && b === 0 ? 1 / a == 1 / b : a == +b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Date]':
@@ -4361,7 +4602,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
         // of `NaN` are not equivalent.
         result = +a == +b;
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       // RegExps are compared by their source patterns and flags.
@@ -4372,7 +4613,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
           a.ignoreCase == b.ignoreCase;
     }
     if (typeof a != 'object' || typeof b != 'object') {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -4382,12 +4623,12 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       // At first try to use DOM3 method isEqualNode
       result = a.isEqualNode(b);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     if (aIsDomNode || bIsDomNode) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -4417,7 +4658,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
 
       diffBuilder.withPath('length', function() {
         if (aLength !== bLength) {
-          diffBuilder.record(aLength, bLength);
+          diffBuilder.recordMismatch();
           result = false;
         }
       });
@@ -4425,10 +4666,10 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       for (i = 0; i < aLength || i < bLength; i++) {
         diffBuilder.withPath(i, function() {
           if (i >= bLength) {
-            diffBuilder.record(a[i], void 0, actualArrayIsLongerFormatter);
+            diffBuilder.recordMismatch(actualArrayIsLongerFormatter.bind(null, self.pp));
             result = false;
           } else {
-            result = eq(i < aLength ? a[i] : void 0, i < bLength ? b[i] : void 0, aStack, bStack, customTesters, diffBuilder) && result;
+            result = self.eq_(i < aLength ? a[i] : void 0, i < bLength ? b[i] : void 0, aStack, bStack, customTesters, diffBuilder) && result;
           }
         });
       }
@@ -4437,7 +4678,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       }
     } else if (j$.isMap(a) && j$.isMap(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -4469,22 +4710,22 @@ getJasmineRequireObj().matchersUtil = function(j$) {
           // otherwise explicitly look up the mapKey in the other Map since we want keys with unique
           // obj identity (that are otherwise equal) to not match.
           if (isAsymmetric(mapKey) || isAsymmetric(cmpKey) &&
-              eq(mapKey, cmpKey, aStack, bStack, customTesters, j$.NullDiffBuilder())) {
+              this.eq_(mapKey, cmpKey, aStack, bStack, customTesters, j$.NullDiffBuilder())) {
             mapValueB = b.get(cmpKey);
           } else {
             mapValueB = b.get(mapKey);
           }
-          result = eq(mapValueA, mapValueB, aStack, bStack, customTesters, j$.NullDiffBuilder());
+          result = this.eq_(mapValueA, mapValueB, aStack, bStack, customTesters, j$.NullDiffBuilder());
         }
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else if (j$.isSet(a) && j$.isSet(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -4518,7 +4759,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
             otherValue = otherValues[l];
             prevStackSize = baseStack.length;
             // compare by value equality
-            found = eq(baseValue, otherValue, baseStack, otherStack, customTesters, j$.NullDiffBuilder());
+            found = this.eq_(baseValue, otherValue, baseStack, otherStack, customTesters, j$.NullDiffBuilder());
             if (!found && prevStackSize !== baseStack.length) {
               baseStack.splice(prevStackSize);
               otherStack.splice(prevStackSize);
@@ -4529,7 +4770,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else {
@@ -4542,7 +4783,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
           a instanceof aCtor && b instanceof bCtor &&
           !(aCtor instanceof aCtor && bCtor instanceof bCtor)) {
 
-        diffBuilder.record(a, b, constructorsAreDifferentFormatter);
+        diffBuilder.recordMismatch(constructorsAreDifferentFormatter.bind(null, this.pp));
         return false;
       }
     }
@@ -4553,7 +4794,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
 
     // Ensure that both objects contain the same number of properties before comparing deep equality.
     if (keys(b, className == '[object Array]').length !== size) {
-      diffBuilder.record(a, b, objectKeysAreDifferentFormatter);
+      diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
       return false;
     }
 
@@ -4561,13 +4802,13 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       key = aKeys[i];
       // Deep compare each member
       if (!j$.util.has(b, key)) {
-        diffBuilder.record(a, b, objectKeysAreDifferentFormatter);
+        diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
         result = false;
         continue;
       }
 
       diffBuilder.withPath(key, function() {
-        if(!eq(a[key], b[key], aStack, bStack, customTesters, diffBuilder)) {
+        if(!self.eq_(a[key], b[key], aStack, bStack, customTesters, diffBuilder)) {
           result = false;
         }
       });
@@ -4582,7 +4823,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     bStack.pop();
 
     return result;
-  }
+  };
 
   function keys(obj, isArray) {
     var allKeys = Object.keys ? Object.keys(obj) :
@@ -4618,11 +4859,11 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     return typeof obj === 'function';
   }
 
-  function objectKeysAreDifferentFormatter(actual, expected, path) {
+  function objectKeysAreDifferentFormatter(pp, actual, expected, path) {
     var missingProperties = j$.util.objectDifference(expected, actual),
         extraProperties = j$.util.objectDifference(actual, expected),
-        missingPropertiesMessage = formatKeyValuePairs(missingProperties),
-        extraPropertiesMessage = formatKeyValuePairs(extraProperties),
+        missingPropertiesMessage = formatKeyValuePairs(pp, missingProperties),
+        extraPropertiesMessage = formatKeyValuePairs(pp, extraProperties),
         messages = [];
 
     if (!path.depth()) {
@@ -4640,7 +4881,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     return messages.join('\n');
   }
 
-  function constructorsAreDifferentFormatter(actual, expected, path) {
+  function constructorsAreDifferentFormatter(pp, actual, expected, path) {
     if (!path.depth()) {
       path = 'object';
     }
@@ -4648,25 +4889,94 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     return 'Expected ' +
       path + ' to be a kind of ' +
       j$.fnNameFor(expected.constructor) +
-      ', but was ' + j$.pp(actual) + '.';
+      ', but was ' + pp(actual) + '.';
   }
 
-  function actualArrayIsLongerFormatter(actual, expected, path) {
+  function actualArrayIsLongerFormatter(pp, actual, expected, path) {
     return 'Unexpected ' +
       path + (path.depth() ? ' = ' : '') +
-      j$.pp(actual) +
+      pp(actual) +
       ' in array.';
   }
 
-  function formatKeyValuePairs(obj) {
+  function formatKeyValuePairs(pp, obj) {
     var formatted = '';
     for (var key in obj) {
-      formatted += '\n    ' + key + ': ' + j$.pp(obj[key]);
+      formatted += '\n    ' + key + ': ' + pp(obj[key]);
     }
     return formatted;
   }
+
+  function isDiffBuilder(obj) {
+    return obj && typeof obj.recordMismatch === 'function';
+  }
+
+  return MatchersUtil;
 };
 
+getJasmineRequireObj().MismatchTree = function (j$) {
+
+  /*
+    To be able to apply custom object formatters at all possible levels of an
+    object graph, DiffBuilder needs to be able to know not just where the
+    mismatch occurred but also all ancestors of the mismatched value in both
+    the expected and actual object graphs. MismatchTree maintains that context
+    and provides it via the traverse method.
+   */
+  function MismatchTree(path) {
+    this.path = path || new j$.ObjectPath([]);
+    this.formatter = undefined;
+    this.children = [];
+    this.isMismatch = false;
+  }
+
+  MismatchTree.prototype.add = function (path, formatter) {
+    var key, child;
+
+    if (path.depth() === 0) {
+      this.formatter = formatter;
+      this.isMismatch = true;
+    } else {
+      key = path.components[0];
+      path = path.shift();
+      child = this.child(key);
+
+      if (!child) {
+        child = new MismatchTree(this.path.add(key));
+        this.children.push(child);
+      }
+
+      child.add(path, formatter);
+    }
+  };
+
+  MismatchTree.prototype.traverse = function (visit) {
+    var i, hasChildren = this.children.length > 0;
+
+    if (this.isMismatch || hasChildren) {
+      if (visit(this.path, !hasChildren, this.formatter)) {
+        for (i = 0; i < this.children.length; i++) {
+          this.children[i].traverse(visit);
+        }
+      }
+    }
+  };
+
+  MismatchTree.prototype.child = function(key) {
+    var i, pathEls;
+
+    for (i = 0; i < this.children.length; i++) {
+      pathEls = this.children[i].path.components;
+      if (pathEls[pathEls.length - 1] === key) {
+        return this.children[i];
+      }
+    }
+  };
+
+  return MismatchTree;
+};
+
+
 getJasmineRequireObj().nothing = function() {
   /**
    * {@link expect} nothing explicitly.
@@ -4695,7 +5005,8 @@ getJasmineRequireObj().NullDiffBuilder = function(j$) {
       withPath: function(_, block) {
         block();
       },
-      record: function() {}
+      setRoots: function() {},
+      recordMismatch: function() {}
     };
   };
 };
@@ -4713,10 +5024,24 @@ getJasmineRequireObj().ObjectPath = function(j$) {
     }
   };
 
+  ObjectPath.prototype.dereference = function(obj) {
+    var i;
+
+    for (i = 0; i < this.components.length; i++) {
+      obj = obj[this.components[i]];
+    }
+
+    return obj;
+  };
+
   ObjectPath.prototype.add = function(component) {
     return new ObjectPath(this.components.concat([component]));
   };
 
+  ObjectPath.prototype.shift = function() {
+    return new ObjectPath(this.components.slice(1));
+  };
+
   ObjectPath.prototype.depth = function() {
     return this.components.length;
   };
@@ -4776,7 +5101,7 @@ getJasmineRequireObj().toBe = function(j$) {
    * @example
    * expect(thing).toBe(realThing);
    */
-  function toBe(util) {
+  function toBe(matchersUtil) {
     var tip = ' Tip: To check for deep equality, use .toEqual() instead of .toBe().';
 
     return {
@@ -4786,7 +5111,7 @@ getJasmineRequireObj().toBe = function(j$) {
         };
 
         if (typeof expected === 'object') {
-          result.message = util.buildFailureMessage('toBe', result.pass, actual, expected) + tip;
+          result.message = matchersUtil.buildFailureMessage('toBe', result.pass, actual, expected) + tip;
         }
 
         return result;
@@ -4962,11 +5287,11 @@ getJasmineRequireObj().toBeInstanceOf = function(j$) {
    * expect(3).toBeInstanceOf(Number);
    * expect(new Error()).toBeInstanceOf(Error);
    */
-  function toBeInstanceOf(util, customEqualityTesters) {
+  function toBeInstanceOf(matchersUtil) {
     return {
       compare: function(actual, expected) {
-        var actualType = actual && actual.constructor ? j$.fnNameFor(actual.constructor) : j$.pp(actual),
-            expectedType = expected ? j$.fnNameFor(expected) : j$.pp(expected),
+        var actualType = actual && actual.constructor ? j$.fnNameFor(actual.constructor) : matchersUtil.pp(actual),
+            expectedType = expected ? j$.fnNameFor(expected) : matchersUtil.pp(expected),
             expectedMatcher,
             pass;
 
@@ -5052,7 +5377,7 @@ getJasmineRequireObj().toBeNaN = function(j$) {
    * @example
    * expect(thing).toBeNaN();
    */
-  function toBeNaN() {
+  function toBeNaN(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {
@@ -5062,7 +5387,7 @@ getJasmineRequireObj().toBeNaN = function(j$) {
         if (result.pass) {
           result.message = 'Expected actual not to be NaN.';
         } else {
-          result.message = function() { return 'Expected ' + j$.pp(actual) + ' to be NaN.'; };
+          result.message = function() { return 'Expected ' + matchersUtil.pp(actual) + ' to be NaN.'; };
         }
 
         return result;
@@ -5082,7 +5407,7 @@ getJasmineRequireObj().toBeNegativeInfinity = function(j$) {
    * @example
    * expect(thing).toBeNegativeInfinity();
    */
-  function toBeNegativeInfinity() {
+  function toBeNegativeInfinity(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {
@@ -5092,7 +5417,7 @@ getJasmineRequireObj().toBeNegativeInfinity = function(j$) {
         if (result.pass) {
           result.message = 'Expected actual not to be -Infinity.';
         } else {
-          result.message = function() { return 'Expected ' + j$.pp(actual) + ' to be -Infinity.'; };
+          result.message = function() { return 'Expected ' + matchersUtil.pp(actual) + ' to be -Infinity.'; };
         }
 
         return result;
@@ -5134,7 +5459,7 @@ getJasmineRequireObj().toBePositiveInfinity = function(j$) {
    * @example
    * expect(thing).toBePositiveInfinity();
    */
-  function toBePositiveInfinity() {
+  function toBePositiveInfinity(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {
@@ -5144,7 +5469,7 @@ getJasmineRequireObj().toBePositiveInfinity = function(j$) {
         if (result.pass) {
           result.message = 'Expected actual not to be Infinity.';
         } else {
-          result.message = function() { return 'Expected ' + j$.pp(actual) + ' to be Infinity.'; };
+          result.message = function() { return 'Expected ' + matchersUtil.pp(actual) + ' to be Infinity.'; };
         }
 
         return result;
@@ -5232,14 +5557,12 @@ getJasmineRequireObj().toContain = function() {
    * expect(array).toContain(anElement);
    * expect(string).toContain(substring);
    */
-  function toContain(util, customEqualityTesters) {
-    customEqualityTesters = customEqualityTesters || [];
-
+  function toContain(matchersUtil) {
     return {
       compare: function(actual, expected) {
 
         return {
-          pass: util.contains(actual, expected, customEqualityTesters)
+          pass: matchersUtil.contains(actual, expected)
         };
       }
     };
@@ -5258,17 +5581,15 @@ getJasmineRequireObj().toEqual = function(j$) {
    * @example
    * expect(bigObject).toEqual({"foo": ['bar', 'baz']});
    */
-  function toEqual(util, customEqualityTesters) {
-    customEqualityTesters = customEqualityTesters || [];
-
+  function toEqual(matchersUtil) {
     return {
       compare: function(actual, expected) {
         var result = {
             pass: false
           },
-          diffBuilder = j$.DiffBuilder();
+          diffBuilder = j$.DiffBuilder({prettyPrinter: matchersUtil.pp});
 
-        result.pass = util.equals(actual, expected, customEqualityTesters, diffBuilder);
+        result.pass = matchersUtil.equals(actual, expected, diffBuilder);
 
         // TODO: only set error message if test fails
         result.message = diffBuilder.getMessage();
@@ -5294,13 +5615,13 @@ getJasmineRequireObj().toHaveBeenCalled = function(j$) {
    * expect(mySpy).toHaveBeenCalled();
    * expect(mySpy).not.toHaveBeenCalled();
    */
-  function toHaveBeenCalled() {
+  function toHaveBeenCalled(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {};
 
         if (!j$.isSpy(actual)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(actual) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(actual) + '.'));
         }
 
         if (arguments.length > 1) {
@@ -5334,14 +5655,14 @@ getJasmineRequireObj().toHaveBeenCalledBefore = function(j$) {
    * @example
    * expect(mySpy).toHaveBeenCalledBefore(otherSpy);
    */
-  function toHaveBeenCalledBefore() {
+  function toHaveBeenCalledBefore(matchersUtil) {
     return {
       compare: function(firstSpy, latterSpy) {
         if (!j$.isSpy(firstSpy)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(firstSpy) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(firstSpy) + '.'));
         }
         if (!j$.isSpy(latterSpy)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(latterSpy) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(latterSpy) + '.'));
         }
 
         var result = { pass: false };
@@ -5396,11 +5717,11 @@ getJasmineRequireObj().toHaveBeenCalledTimes = function(j$) {
    * @example
    * expect(mySpy).toHaveBeenCalledTimes(3);
    */
-  function toHaveBeenCalledTimes() {
+  function toHaveBeenCalledTimes(matchersUtil) {
     return {
       compare: function(actual, expected) {
         if (!j$.isSpy(actual)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(actual) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(actual) + '.'));
         }
 
         var args = Array.prototype.slice.call(arguments, 0),
@@ -5438,7 +5759,7 @@ getJasmineRequireObj().toHaveBeenCalledWith = function(j$) {
    * @example
    * expect(mySpy).toHaveBeenCalledWith('foo', 'bar', 2);
    */
-  function toHaveBeenCalledWith(util, customEqualityTesters) {
+  function toHaveBeenCalledWith(matchersUtil) {
     return {
       compare: function() {
         var args = Array.prototype.slice.call(arguments, 0),
@@ -5447,40 +5768,40 @@ getJasmineRequireObj().toHaveBeenCalledWith = function(j$) {
           result = { pass: false };
 
         if (!j$.isSpy(actual)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(actual) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(actual) + '.'));
         }
 
         if (!actual.calls.any()) {
           result.message = function() {
             return 'Expected spy ' + actual.and.identity + ' to have been called with:\n' +
-              '  ' + j$.pp(expectedArgs) +
+              '  ' + matchersUtil.pp(expectedArgs) +
               '\nbut it was never called.';
           };
           return result;
         }
 
-        if (util.contains(actual.calls.allArgs(), expectedArgs, customEqualityTesters)) {
+        if (matchersUtil.contains(actual.calls.allArgs(), expectedArgs)) {
           result.pass = true;
           result.message = function() {
             return 'Expected spy ' + actual.and.identity + ' not to have been called with:\n' +
-              '  ' + j$.pp(expectedArgs) +
+              '  ' + matchersUtil.pp(expectedArgs) +
               '\nbut it was.';
           };
         } else {
           result.message = function() {
             var prettyPrintedCalls = actual.calls.allArgs().map(function(argsForCall) {
-              return '  ' + j$.pp(argsForCall);
+              return '  ' + matchersUtil.pp(argsForCall);
             });
 
             var diffs = actual.calls.allArgs().map(function(argsForCall, callIx) {
             var diffBuilder = new j$.DiffBuilder();
-              util.equals(argsForCall, expectedArgs, customEqualityTesters, diffBuilder);
+              matchersUtil.equals(argsForCall, expectedArgs, diffBuilder);
               return 'Call ' + callIx + ':\n' +
                 diffBuilder.getMessage().replace(/^/mg, '  ');
             });
 
             return 'Expected spy ' + actual.and.identity + ' to have been called with:\n' +
-              '  ' + j$.pp(expectedArgs) + '\n' + '' +
+              '  ' + matchersUtil.pp(expectedArgs) + '\n' + '' +
               'but actual calls were:\n' +
               prettyPrintedCalls.join(',\n') + '.\n\n' +
               diffs.join('\n');
@@ -5507,11 +5828,11 @@ getJasmineRequireObj().toHaveClass = function(j$) {
    * el.className = 'foo bar baz';
    * expect(el).toHaveClass('bar');
    */
-  function toHaveClass(util, customEqualityTesters) {
+  function toHaveClass(matchersUtil) {
     return {
       compare: function(actual, expected) {
         if (!isElement(actual)) {
-          throw new Error(j$.pp(actual) + ' is not a DOM element');
+          throw new Error(matchersUtil.pp(actual) + ' is not a DOM element');
         }
 
         return {
@@ -5577,7 +5898,7 @@ getJasmineRequireObj().toThrow = function(j$) {
    * expect(function() { return 'things'; }).toThrow('foo');
    * expect(function() { return 'stuff'; }).toThrow();
    */
-  function toThrow(util) {
+  function toThrow(matchersUtil) {
     return {
       compare: function(actual, expected) {
         var result = { pass: false },
@@ -5602,16 +5923,16 @@ getJasmineRequireObj().toThrow = function(j$) {
 
         if (arguments.length == 1) {
           result.pass = true;
-          result.message = function() { return 'Expected function not to throw, but it threw ' + j$.pp(thrown) + '.'; };
+          result.message = function() { return 'Expected function not to throw, but it threw ' + matchersUtil.pp(thrown) + '.'; };
 
           return result;
         }
 
-        if (util.equals(thrown, expected)) {
+        if (matchersUtil.equals(thrown, expected)) {
           result.pass = true;
-          result.message = function() { return 'Expected function not to throw ' + j$.pp(expected) + '.'; };
+          result.message = function() { return 'Expected function not to throw ' + matchersUtil.pp(expected) + '.'; };
         } else {
-          result.message = function() { return 'Expected function to throw ' + j$.pp(expected) + ', but it threw ' +  j$.pp(thrown) + '.'; };
+          result.message = function() { return 'Expected function to throw ' + matchersUtil.pp(expected) + ', but it threw ' +  matchersUtil.pp(thrown) + '.'; };
         }
 
         return result;
@@ -5640,7 +5961,7 @@ getJasmineRequireObj().toThrowError = function(j$) {
    * expect(function() { return 'other'; }).toThrowError(/foo/);
    * expect(function() { return 'other'; }).toThrowError();
    */
-  function toThrowError () {
+  function toThrowError(matchersUtil) {
     return {
       compare: function(actual) {
         var errorMatcher = getMatcher.apply(null, arguments),
@@ -5658,7 +5979,7 @@ getJasmineRequireObj().toThrowError = function(j$) {
         }
 
         if (!j$.isError_(thrown)) {
-          return fail(function() { return 'Expected function to throw an Error, but it threw ' + j$.pp(thrown) + '.'; });
+          return fail(function() { return 'Expected function to throw an Error, but it threw ' + matchersUtil.pp(thrown) + '.'; });
         }
 
         return errorMatcher.match(thrown);
@@ -5721,7 +6042,7 @@ getJasmineRequireObj().toThrowError = function(j$) {
             thrownMessage = '';
 
         if (expected) {
-          thrownMessage = ' with message ' + j$.pp(thrown.message);
+          thrownMessage = ' with message ' + matchersUtil.pp(thrown.message);
         }
 
         return thrownName + thrownMessage;
@@ -5731,9 +6052,9 @@ getJasmineRequireObj().toThrowError = function(j$) {
         if (expected === null) {
           return '';
         } else if (expected instanceof RegExp) {
-          return ' with a message matching ' + j$.pp(expected);
+          return ' with a message matching ' + matchersUtil.pp(expected);
         } else {
-          return ' with message ' + j$.pp(expected);
+          return ' with message ' + matchersUtil.pp(expected);
         }
       }
 
@@ -5802,7 +6123,7 @@ getJasmineRequireObj().toThrowMatching = function(j$) {
    * @example
    * expect(function() { throw new Error('nope'); }).toThrowMatching(function(thrown) { return thrown.message === 'nope'; });
    */
-  function toThrowMatching() {
+  function toThrowMatching(matchersUtil) {
     return {
       compare: function(actual, predicate) {
         var thrown;
@@ -5832,14 +6153,14 @@ getJasmineRequireObj().toThrowMatching = function(j$) {
         }
       }
     };
-  }
 
-  function thrownDescription(thrown) {
-    if (thrown && thrown.constructor) {
-      return j$.fnNameFor(thrown.constructor) + ' with message ' +
-        j$.pp(thrown.message);
-    } else {
-      return j$.pp(thrown);
+    function thrownDescription(thrown) {
+      if (thrown && thrown.constructor) {
+        return j$.fnNameFor(thrown.constructor) + ' with message ' +
+          matchersUtil.pp(thrown.message);
+      } else {
+        return matchersUtil.pp(thrown);
+      }
     }
   }
 
@@ -5966,12 +6287,14 @@ getJasmineRequireObj().MockDate = function() {
   return MockDate;
 };
 
-getJasmineRequireObj().pp = function(j$) {
-  function PrettyPrinter() {
+getJasmineRequireObj().makePrettyPrinter = function(j$) {
+  function SinglePrettyPrintRun(customObjectFormatters, pp) {
+    this.customObjectFormatters_ = customObjectFormatters;
     this.ppNestLevel_ = 0;
     this.seen = [];
     this.length = 0;
     this.stringParts = [];
+    this.pp_ = pp;
   }
 
   function hasCustomToString(value) {
@@ -5989,10 +6312,14 @@ getJasmineRequireObj().pp = function(j$) {
     }
   }
 
-  PrettyPrinter.prototype.format = function(value) {
+  SinglePrettyPrintRun.prototype.format = function(value) {
     this.ppNestLevel_++;
     try {
-      if (j$.util.isUndefined(value)) {
+      var customFormatResult = this.applyCustomFormatters_(value);
+
+      if (customFormatResult) {
+        this.emitScalar(customFormatResult);
+      } else if (j$.util.isUndefined(value)) {
         this.emitScalar('undefined');
       } else if (value === null) {
         this.emitScalar('null');
@@ -6001,7 +6328,7 @@ getJasmineRequireObj().pp = function(j$) {
       } else if (value === j$.getGlobal()) {
         this.emitScalar('<global>');
       } else if (value.jasmineToString) {
-        this.emitScalar(value.jasmineToString());
+        this.emitScalar(value.jasmineToString(this.pp_));
       } else if (typeof value === 'string') {
         this.emitString(value);
       } else if (j$.isSpy(value)) {
@@ -6063,7 +6390,11 @@ getJasmineRequireObj().pp = function(j$) {
     }
   };
 
-  PrettyPrinter.prototype.iterateObject = function(obj, fn) {
+  SinglePrettyPrintRun.prototype.applyCustomFormatters_ = function(value) {
+    return customFormat(value, this.customObjectFormatters_);
+  };
+
+  SinglePrettyPrintRun.prototype.iterateObject = function(obj, fn) {
     var objKeys = keys(obj, j$.isArray_(obj));
     var isGetter = function isGetter(prop) {};
 
@@ -6082,15 +6413,15 @@ getJasmineRequireObj().pp = function(j$) {
     return objKeys.length > length;
   };
 
-  PrettyPrinter.prototype.emitScalar = function(value) {
+  SinglePrettyPrintRun.prototype.emitScalar = function(value) {
     this.append(value);
   };
 
-  PrettyPrinter.prototype.emitString = function(value) {
+  SinglePrettyPrintRun.prototype.emitString = function(value) {
     this.append("'" + value + "'");
   };
 
-  PrettyPrinter.prototype.emitArray = function(array) {
+  SinglePrettyPrintRun.prototype.emitArray = function(array) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Array');
       return;
@@ -6126,7 +6457,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' ]');
   };
 
-  PrettyPrinter.prototype.emitSet = function(set) {
+  SinglePrettyPrintRun.prototype.emitSet = function(set) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Set');
       return;
@@ -6151,7 +6482,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
-  PrettyPrinter.prototype.emitMap = function(map) {
+  SinglePrettyPrintRun.prototype.emitMap = function(map) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Map');
       return;
@@ -6176,7 +6507,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
-  PrettyPrinter.prototype.emitObject = function(obj) {
+  SinglePrettyPrintRun.prototype.emitObject = function(obj) {
     var ctor = obj.constructor,
       constructorName;
 
@@ -6212,7 +6543,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' })');
   };
 
-  PrettyPrinter.prototype.emitTypedArray = function(arr) {
+  SinglePrettyPrintRun.prototype.emitTypedArray = function(arr) {
     var constructorName = j$.fnNameFor(arr.constructor),
       limitedArray = Array.prototype.slice.call(
         arr,
@@ -6228,7 +6559,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(constructorName + ' [ ' + itemsString + ' ]');
   };
 
-  PrettyPrinter.prototype.emitDomElement = function(el) {
+  SinglePrettyPrintRun.prototype.emitDomElement = function(el) {
     var tagName = el.tagName.toLowerCase(),
       attrs = el.attributes,
       i,
@@ -6254,7 +6585,11 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(out);
   };
 
-  PrettyPrinter.prototype.formatProperty = function(obj, property, isGetter) {
+  SinglePrettyPrintRun.prototype.formatProperty = function(
+    obj,
+    property,
+    isGetter
+  ) {
     this.append(property);
     this.append(': ');
     if (isGetter) {
@@ -6264,7 +6599,7 @@ getJasmineRequireObj().pp = function(j$) {
     }
   };
 
-  PrettyPrinter.prototype.append = function(value) {
+  SinglePrettyPrintRun.prototype.append = function(value) {
     // This check protects us from the rare case where an object has overriden
     // `toString()` with an invalid implementation (returning a non-string).
     if (typeof value !== 'string') {
@@ -6328,10 +6663,33 @@ getJasmineRequireObj().pp = function(j$) {
 
     return extraKeys;
   }
-  return function(value) {
-    var prettyPrinter = new PrettyPrinter();
-    prettyPrinter.format(value);
-    return prettyPrinter.stringParts.join('');
+
+  function customFormat(value, customObjectFormatters) {
+    var i, result;
+
+    for (i = 0; i < customObjectFormatters.length; i++) {
+      result = customObjectFormatters[i](value);
+
+      if (result !== undefined) {
+        return result;
+      }
+    }
+  }
+
+  return function(customObjectFormatters) {
+    customObjectFormatters = customObjectFormatters || [];
+
+    var pp = function(value) {
+      var prettyPrinter = new SinglePrettyPrintRun(customObjectFormatters, pp);
+      prettyPrinter.format(value);
+      return prettyPrinter.stringParts.join('');
+    };
+
+    pp.customFormat_ = function(value) {
+      return customFormat(value, customObjectFormatters);
+    };
+
+    return pp;
   };
 };
 
@@ -6945,6 +7303,20 @@ getJasmineRequireObj().interface = function(jasmine, env) {
     return env.addAsyncMatchers(matchers);
   };
 
+  /**
+   * Add a custom object formatter for the current scope of specs.
+   *
+   * _Note:_ This is only callable from within a {@link beforeEach}, {@link it}, or {@link beforeAll}.
+   * @name jasmine.addCustomObjectFormatter
+   * @since 3.6.0
+   * @function
+   * @param {Function} formatter - A function which takes a value to format and returns a string if it knows how to format it, and `undefined` otherwise.
+   * @see custom_object_formatter
+   */
+  jasmine.addCustomObjectFormatter = function(formatter) {
+    return env.addCustomObjectFormatter(formatter);
+  };
+
   /**
    * Get the currently booted mock {Clock} for this Jasmine environment.
    * @name jasmine.clock
@@ -7025,6 +7397,11 @@ getJasmineRequireObj().Spy = function(j$) {
     };
   })();
 
+  var matchersUtil = new j$.MatchersUtil({
+    customTesters: [],
+    pp: j$.makePrettyPrinter()
+  });
+
   /**
    * _Note:_ Do not construct this directly, use {@link spyOn}, {@link spyOnProperty}, {@link jasmine.createSpy}, or {@link jasmine.createSpyObj}
    * @constructor
@@ -7220,7 +7597,7 @@ getJasmineRequireObj().Spy = function(j$) {
     var i;
 
     for (i = 0; i < this.strategies.length; i++) {
-      if (j$.matchersUtil.equals(args, this.strategies[i].args)) {
+      if (matchersUtil.equals(args, this.strategies[i].args)) {
         return this.strategies[i].strategy;
       }
     }
diff --git a/spec/core/AsyncExpectationSpec.js b/spec/core/AsyncExpectationSpec.js
index 9b2e3f26..40f63731 100644
--- a/spec/core/AsyncExpectationSpec.js
+++ b/spec/core/AsyncExpectationSpec.js
@@ -24,8 +24,9 @@ describe('AsyncExpectation', function() {
 
       var addExpectationResult = jasmine.createSpy('addExpectationResult'),
         actual = Promise.resolve(),
+        pp = jasmineUnderTest.makePrettyPrinter(),
         expectation = jasmineUnderTest.Expectation.asyncFactory({
-          util: jasmineUnderTest.matchersUtil,
+          matchersUtil: new jasmineUnderTest.MatchersUtil({ pp: pp }),
           actual: actual,
           addExpectationResult: addExpectationResult
         });
@@ -47,7 +48,9 @@ describe('AsyncExpectation', function() {
       var addExpectationResult = jasmine.createSpy('addExpectationResult'),
         actual = Promise.reject(),
         expectation = jasmineUnderTest.Expectation.asyncFactory({
-          util: jasmineUnderTest.matchersUtil,
+          matchersUtil: new jasmineUnderTest.MatchersUtil({
+            pp: function() {}
+          }),
           actual: actual,
           addExpectationResult: addExpectationResult
         });
@@ -91,7 +94,7 @@ describe('AsyncExpectation', function() {
     it('prepends the context to the generated failure message', function() {
       jasmine.getEnv().requirePromises();
 
-      var util = {
+      var matchersUtil = {
           buildFailureMessage: function() {
             return 'failure message';
           }
@@ -100,7 +103,7 @@ describe('AsyncExpectation', function() {
         expectation = jasmineUnderTest.Expectation.asyncFactory({
           actual: Promise.reject('rejected'),
           addExpectationResult: addExpectationResult,
-          util: util
+          matchersUtil: matchersUtil
         });
 
       return expectation
@@ -119,16 +122,17 @@ describe('AsyncExpectation', function() {
     it('prepends the context to a custom failure message', function() {
       jasmine.getEnv().requirePromises();
 
-      var util = {
+      var matchersUtil = {
           buildFailureMessage: function() {
             return 'failure message';
-          }
+          },
+          pp: jasmineUnderTest.makePrettyPrinter()
         },
         addExpectationResult = jasmine.createSpy('addExpectationResult'),
         expectation = jasmineUnderTest.Expectation.asyncFactory({
           actual: Promise.reject('b'),
           addExpectationResult: addExpectationResult,
-          util: util
+          matchersUtil: matchersUtil
         });
 
       return expectation
@@ -149,7 +153,7 @@ describe('AsyncExpectation', function() {
       pending('should actually work, but no custom matchers for async yet');
       jasmine.getEnv().requirePromises();
 
-      var util = {
+      var matchersUtil = {
           buildFailureMessage: function() {
             return 'failure message';
           }
@@ -159,7 +163,7 @@ describe('AsyncExpectation', function() {
         expectation = jasmineUnderTest.Expectation.asyncFactory({
           actual: actual,
           addExpectationResult: addExpectationResult,
-          util: util
+          matchersUtil: matchersUtil
         });
 
       return expectation
@@ -180,10 +184,11 @@ describe('AsyncExpectation', function() {
 
       var addExpectationResult = jasmine.createSpy('addExpectationResult'),
         actual = Promise.resolve(),
+        pp = jasmineUnderTest.makePrettyPrinter(),
         expectation = jasmineUnderTest.Expectation.asyncFactory({
           actual: actual,
           addExpectationResult: addExpectationResult,
-          util: jasmineUnderTest.matchersUtil
+          matchersUtil: new jasmineUnderTest.MatchersUtil({ pp: pp })
         });
 
       return expectation
@@ -208,7 +213,9 @@ describe('AsyncExpectation', function() {
         expectation = jasmineUnderTest.Expectation.asyncFactory({
           actual: actual,
           addExpectationResult: addExpectationResult,
-          util: jasmineUnderTest.matchersUtil
+          matchersUtil: new jasmineUnderTest.MatchersUtil({
+            pp: jasmineUnderTest.makePrettyPrinter()
+          })
         });
 
       return expectation
@@ -256,7 +263,7 @@ describe('AsyncExpectation', function() {
         matchers = {
           toFoo: matcherFactory
         },
-        util = {
+        matchersUtil = {
           buildFailureMessage: jasmine.createSpy('buildFailureMessage')
         },
         customEqualityTesters = ['a'],
@@ -264,7 +271,7 @@ describe('AsyncExpectation', function() {
         expectation;
 
       expectation = jasmineUnderTest.Expectation.asyncFactory({
-        util: util,
+        matchersUtil: matchersUtil,
         customAsyncMatchers: matchers,
         customEqualityTesters: customEqualityTesters,
         actual: 'an actual',
@@ -273,7 +280,7 @@ describe('AsyncExpectation', function() {
 
       return expectation.toFoo('hello').then(function() {
         expect(matcherFactory).toHaveBeenCalledWith(
-          util,
+          matchersUtil,
           customEqualityTesters
         );
       });
@@ -292,14 +299,14 @@ describe('AsyncExpectation', function() {
             };
           }
         },
-        util = {
+        matchersUtil = {
           buildFailureMessage: jasmine.createSpy('buildFailureMessage')
         },
         addExpectationResult = jasmine.createSpy('addExpectationResult'),
         expectation;
 
       expectation = jasmineUnderTest.Expectation.asyncFactory({
-        util: util,
+        matchersUtil: matchersUtil,
         customAsyncMatchers: matchers,
         actual: 'an actual',
         addExpectationResult: addExpectationResult
@@ -322,7 +329,7 @@ describe('AsyncExpectation', function() {
             };
           }
         },
-        util = {
+        matchersUtil = {
           buildFailureMessage: jasmine.createSpy('buildFailureMessage')
         },
         addExpectationResult = jasmine.createSpy('addExpectationResult'),
@@ -335,7 +342,7 @@ describe('AsyncExpectation', function() {
 
       expectation = jasmineUnderTest.Expectation.asyncFactory({
         customAsyncMatchers: matchers,
-        util: util,
+        matchersUtil: matchersUtil,
         actual: 'an actual',
         addExpectationResult: addExpectationResult
       });
@@ -365,7 +372,7 @@ describe('AsyncExpectation', function() {
             };
           }
         },
-        util = {
+        matchersUtil = {
           buildFailureMessage: function() {
             return '';
           }
@@ -380,7 +387,7 @@ describe('AsyncExpectation', function() {
 
       expectation = jasmineUnderTest.Expectation.asyncFactory({
         customAsyncMatchers: matchers,
-        util: util,
+        matchersUtil: matchersUtil,
         actual: 'an actual',
         addExpectationResult: addExpectationResult
       });
@@ -536,7 +543,7 @@ describe('AsyncExpectation', function() {
             };
           }
         },
-        util = {
+        matchersUtil = {
           buildFailureMessage: function() {
             return 'default message';
           }
@@ -553,7 +560,7 @@ describe('AsyncExpectation', function() {
       expectation = jasmineUnderTest.Expectation.asyncFactory({
         customAsyncMatchers: matchers,
         actual: 'an actual',
-        util: util,
+        matchersUtil: matchersUtil,
         addExpectationResult: addExpectationResult
       }).not;
 
diff --git a/spec/core/EnvSpec.js b/spec/core/EnvSpec.js
index 61b962b1..e32d8eda 100644
--- a/spec/core/EnvSpec.js
+++ b/spec/core/EnvSpec.js
@@ -312,4 +312,78 @@ describe('Env', function() {
       expect(globalErrors.install).toHaveBeenCalled();
     });
   });
+
+  it('creates an expectationFactory that uses the current custom equality testers and object formatters', function(done) {
+    function customEqualityTester() {}
+    function customObjectFormatter() {}
+    function prettyPrinter() {}
+    var RealSpec = jasmineUnderTest.Spec,
+      specInstance,
+      expectationFactory;
+    spyOn(jasmineUnderTest, 'MatchersUtil');
+    spyOn(jasmineUnderTest, 'makePrettyPrinter').and.returnValue(prettyPrinter);
+    spyOn(jasmineUnderTest, 'Spec').and.callFake(function(options) {
+      expectationFactory = options.expectationFactory;
+      specInstance = new RealSpec(options);
+      return specInstance;
+    });
+
+    env.it('spec', function() {
+      env.addCustomEqualityTester(customEqualityTester);
+      env.addCustomObjectFormatter(customObjectFormatter);
+      expectationFactory('actual', specInstance);
+    });
+
+    env.addReporter({
+      jasmineDone: function() {
+        expect(jasmineUnderTest.makePrettyPrinter).toHaveBeenCalledWith([
+          customObjectFormatter
+        ]);
+        expect(jasmineUnderTest.MatchersUtil).toHaveBeenCalledWith({
+          customTesters: [customEqualityTester],
+          pp: prettyPrinter
+        });
+        done();
+      }
+    });
+
+    env.execute();
+  });
+
+  it('creates an asyncExpectationFactory that uses the current custom equality testers and object formatters', function(done) {
+    function customEqualityTester() {}
+    function customObjectFormatter() {}
+    function prettyPrinter() {}
+    var RealSpec = jasmineUnderTest.Spec,
+      specInstance,
+      asyncExpectationFactory;
+    spyOn(jasmineUnderTest, 'MatchersUtil');
+    spyOn(jasmineUnderTest, 'makePrettyPrinter').and.returnValue(prettyPrinter);
+    spyOn(jasmineUnderTest, 'Spec').and.callFake(function(options) {
+      asyncExpectationFactory = options.asyncExpectationFactory;
+      specInstance = new RealSpec(options);
+      return specInstance;
+    });
+
+    env.it('spec', function() {
+      env.addCustomEqualityTester(customEqualityTester);
+      env.addCustomObjectFormatter(customObjectFormatter);
+      asyncExpectationFactory('actual', specInstance);
+    });
+
+    env.addReporter({
+      jasmineDone: function() {
+        expect(jasmineUnderTest.makePrettyPrinter).toHaveBeenCalledWith([
+          customObjectFormatter
+        ]);
+        expect(jasmineUnderTest.MatchersUtil).toHaveBeenCalledWith({
+          customTesters: [customEqualityTester],
+          pp: prettyPrinter
+        });
+        done();
+      }
+    });
+
+    env.execute();
+  });
 });
diff --git a/spec/core/ExpectationFilterChainSpec.js b/spec/core/ExpectationFilterChainSpec.js
index 911f6b30..009a5ba3 100644
--- a/spec/core/ExpectationFilterChainSpec.js
+++ b/spec/core/ExpectationFilterChainSpec.js
@@ -72,21 +72,21 @@ describe('ExpectationFilterChain', function() {
           matcherResult = { pass: false },
           matcherName = 'foo',
           args = [],
-          util = {},
+          matchersUtil = {},
           result;
 
         result = chain.buildFailureMessage(
           matcherResult,
           matcherName,
           args,
-          util
+          matchersUtil
         );
 
         expect(first).toHaveBeenCalledWith(
           matcherResult,
           matcherName,
           args,
-          util
+          matchersUtil
         );
         expect(second).not.toHaveBeenCalled();
         expect(result).toEqual('first');
diff --git a/spec/core/ExpectationSpec.js b/spec/core/ExpectationSpec.js
index 599b0558..6ab37713 100644
--- a/spec/core/ExpectationSpec.js
+++ b/spec/core/ExpectationSpec.js
@@ -37,7 +37,7 @@ describe('Expectation', function() {
       matchers = {
         toFoo: matcherFactory
       },
-      util = {
+      matchersUtil = {
         buildFailureMessage: jasmine.createSpy('buildFailureMessage')
       },
       customEqualityTesters = ['a'],
@@ -45,7 +45,7 @@ describe('Expectation', function() {
       expectation;
 
     expectation = jasmineUnderTest.Expectation.factory({
-      util: util,
+      matchersUtil: matchersUtil,
       customMatchers: matchers,
       customEqualityTesters: customEqualityTesters,
       actual: 'an actual',
@@ -54,7 +54,10 @@ describe('Expectation', function() {
 
     expectation.toFoo('hello');
 
-    expect(matcherFactory).toHaveBeenCalledWith(util, customEqualityTesters);
+    expect(matcherFactory).toHaveBeenCalledWith(
+      matchersUtil,
+      customEqualityTesters
+    );
   });
 
   it("wraps matchers's compare functions, passing the actual and expected", function() {
@@ -68,14 +71,14 @@ describe('Expectation', function() {
           };
         }
       },
-      util = {
+      matchersUtil = {
         buildFailureMessage: jasmine.createSpy('buildFailureMessage')
       },
       addExpectationResult = jasmine.createSpy('addExpectationResult'),
       expectation;
 
     expectation = jasmineUnderTest.Expectation.factory({
-      util: util,
+      matchersUtil: matchersUtil,
       customMatchers: matchers,
       actual: 'an actual',
       addExpectationResult: addExpectationResult
@@ -96,7 +99,7 @@ describe('Expectation', function() {
           };
         }
       },
-      util = {
+      matchersUtil = {
         buildFailureMessage: jasmine.createSpy('buildFailureMessage')
       },
       addExpectationResult = jasmine.createSpy('addExpectationResult'),
@@ -104,7 +107,7 @@ describe('Expectation', function() {
 
     expectation = jasmineUnderTest.Expectation.factory({
       customMatchers: matchers,
-      util: util,
+      matchersUtil: matchersUtil,
       actual: 'an actual',
       addExpectationResult: addExpectationResult
     });
@@ -132,7 +135,7 @@ describe('Expectation', function() {
           };
         }
       },
-      util = {
+      matchersUtil = {
         buildFailureMessage: function() {
           return '';
         }
@@ -142,7 +145,7 @@ describe('Expectation', function() {
 
     expectation = jasmineUnderTest.Expectation.factory({
       customMatchers: matchers,
-      util: util,
+      matchersUtil: matchersUtil,
       actual: 'an actual',
       addExpectationResult: addExpectationResult
     });
@@ -275,7 +278,7 @@ describe('Expectation', function() {
           };
         }
       },
-      util = {
+      matchersUtil = {
         buildFailureMessage: function() {
           return 'default message';
         }
@@ -287,7 +290,7 @@ describe('Expectation', function() {
     expectation = jasmineUnderTest.Expectation.factory({
       customMatchers: matchers,
       actual: 'an actual',
-      util: util,
+      matchersUtil: matchersUtil,
       addExpectationResult: addExpectationResult
     }).not;
 
@@ -539,7 +542,7 @@ describe('Expectation', function() {
             };
           }
         },
-        util = {
+        matchersUtil = {
           buildFailureMessage: function() {
             return 'failure message';
           }
@@ -547,7 +550,7 @@ describe('Expectation', function() {
         addExpectationResult = jasmine.createSpy('addExpectationResult'),
         expectation = jasmineUnderTest.Expectation.factory({
           customMatchers: matchers,
-          util: util,
+          matchersUtil: matchersUtil,
           actual: 'an actual',
           addExpectationResult: addExpectationResult
         });
@@ -658,9 +661,10 @@ describe('Expectation', function() {
           }
         },
         addExpectationResult = jasmine.createSpy('addExpectationResult'),
+        pp = jasmineUnderTest.makePrettyPrinter(),
         expectation = jasmineUnderTest.Expectation.factory({
           customMatchers: matchers,
-          util: jasmineUnderTest.matchersUtil,
+          matchersUtil: new jasmineUnderTest.MatchersUtil({ pp: pp }),
           actual: 'an actual',
           addExpectationResult: addExpectationResult
         });
diff --git a/spec/core/PrettyPrintSpec.js b/spec/core/PrettyPrintSpec.js
index 5c397eb5..6c43cbd4 100644
--- a/spec/core/PrettyPrintSpec.js
+++ b/spec/core/PrettyPrintSpec.js
@@ -1,17 +1,19 @@
-describe('jasmineUnderTest.pp', function() {
+describe('PrettyPrinter', function() {
   it('should wrap strings in single quotes', function() {
-    expect(jasmineUnderTest.pp('some string')).toEqual("'some string'");
-    expect(jasmineUnderTest.pp("som' string")).toEqual("'som' string'");
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp('some string')).toEqual("'some string'");
+    expect(pp("som' string")).toEqual("'som' string'");
   });
 
   it('should stringify primitives properly', function() {
-    expect(jasmineUnderTest.pp(true)).toEqual('true');
-    expect(jasmineUnderTest.pp(false)).toEqual('false');
-    expect(jasmineUnderTest.pp(null)).toEqual('null');
-    expect(jasmineUnderTest.pp(jasmine.undefined)).toEqual('undefined');
-    expect(jasmineUnderTest.pp(3)).toEqual('3');
-    expect(jasmineUnderTest.pp(-3.14)).toEqual('-3.14');
-    expect(jasmineUnderTest.pp(-0)).toEqual('-0');
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp(true)).toEqual('true');
+    expect(pp(false)).toEqual('false');
+    expect(pp(null)).toEqual('null');
+    expect(pp(jasmine.undefined)).toEqual('undefined');
+    expect(pp(3)).toEqual('3');
+    expect(pp(-3.14)).toEqual('-3.14');
+    expect(pp(-0)).toEqual('-0');
   });
 
   describe('stringify sets', function() {
@@ -20,7 +22,8 @@ describe('jasmineUnderTest.pp', function() {
       var set = new Set();
       set.add(1);
       set.add(2);
-      expect(jasmineUnderTest.pp(set)).toEqual('Set( 1, 2 )');
+      var pp = jasmineUnderTest.makePrettyPrinter();
+      expect(pp(set)).toEqual('Set( 1, 2 )');
     });
 
     it('should truncate sets with more elements than jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH', function() {
@@ -33,7 +36,8 @@ describe('jasmineUnderTest.pp', function() {
         set.add('a');
         set.add('b');
         set.add('c');
-        expect(jasmineUnderTest.pp(set)).toEqual("Set( 'a', 'b', ... )");
+        var pp = jasmineUnderTest.makePrettyPrinter();
+        expect(pp(set)).toEqual("Set( 'a', 'b', ... )");
       } finally {
         jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = originalMaxSize;
       }
@@ -45,7 +49,8 @@ describe('jasmineUnderTest.pp', function() {
       jasmine.getEnv().requireFunctioningMaps();
       var map = new Map();
       map.set(1, 2);
-      expect(jasmineUnderTest.pp(map)).toEqual('Map( [ 1, 2 ] )');
+      var pp = jasmineUnderTest.makePrettyPrinter();
+      expect(pp(map)).toEqual('Map( [ 1, 2 ] )');
     });
 
     it('should truncate maps with more elements than jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH', function() {
@@ -58,9 +63,8 @@ describe('jasmineUnderTest.pp', function() {
         map.set('a', 1);
         map.set('b', 2);
         map.set('c', 3);
-        expect(jasmineUnderTest.pp(map)).toEqual(
-          "Map( [ 'a', 1 ], [ 'b', 2 ], ... )"
-        );
+        var pp = jasmineUnderTest.makePrettyPrinter();
+        expect(pp(map)).toEqual("Map( [ 'a', 1 ], [ 'b', 2 ], ... )");
       } finally {
         jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = originalMaxSize;
       }
@@ -69,43 +73,44 @@ describe('jasmineUnderTest.pp', function() {
 
   describe('stringify arrays', function() {
     it('should stringify arrays properly', function() {
-      expect(jasmineUnderTest.pp([1, 2])).toEqual('[ 1, 2 ]');
-      expect(
-        jasmineUnderTest.pp([1, 'foo', {}, jasmine.undefined, null])
-      ).toEqual("[ 1, 'foo', Object({  }), undefined, null ]");
+      var pp = jasmineUnderTest.makePrettyPrinter();
+      expect(pp([1, 2])).toEqual('[ 1, 2 ]');
+      expect(pp([1, 'foo', {}, jasmine.undefined, null])).toEqual(
+        "[ 1, 'foo', Object({  }), undefined, null ]"
+      );
     });
 
     it('should truncate arrays that are longer than jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH', function() {
       var originalMaxLength = jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH;
       var array = [1, 2, 3];
+      var pp = jasmineUnderTest.makePrettyPrinter();
 
       try {
         jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = 2;
-        expect(jasmineUnderTest.pp(array)).toEqual('[ 1, 2, ... ]');
+        expect(pp(array)).toEqual('[ 1, 2, ... ]');
       } finally {
         jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = originalMaxLength;
       }
     });
 
     it('should stringify arrays with properties properly', function() {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       var arr = [1, 2];
       arr.foo = 'bar';
       arr.baz = {};
-      expect(jasmineUnderTest.pp(arr)).toEqual(
-        "[ 1, 2, foo: 'bar', baz: Object({  }) ]"
-      );
+      expect(pp(arr)).toEqual("[ 1, 2, foo: 'bar', baz: Object({  }) ]");
     });
 
     it('should stringify empty arrays with properties properly', function() {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       var empty = [];
       empty.foo = 'bar';
       empty.baz = {};
-      expect(jasmineUnderTest.pp(empty)).toEqual(
-        "[ foo: 'bar', baz: Object({  }) ]"
-      );
+      expect(pp(empty)).toEqual("[ foo: 'bar', baz: Object({  }) ]");
     });
 
     it('should stringify long arrays with properties properly', function() {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       var originalMaxLength = jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH;
       var long = [1, 2, 3];
       long.foo = 'bar';
@@ -113,7 +118,7 @@ describe('jasmineUnderTest.pp', function() {
 
       try {
         jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = 2;
-        expect(jasmineUnderTest.pp(long)).toEqual(
+        expect(pp(long)).toEqual(
           "[ 1, 2, ..., foo: 'bar', baz: Object({  }) ]"
         );
       } finally {
@@ -122,26 +127,25 @@ describe('jasmineUnderTest.pp', function() {
     });
 
     it('should indicate circular array references', function() {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       var array1 = [1, 2];
       var array2 = [array1];
       array1.push(array2);
-      expect(jasmineUnderTest.pp(array1)).toEqual(
-        '[ 1, 2, [ <circular reference: Array> ] ]'
-      );
+      expect(pp(array1)).toEqual('[ 1, 2, [ <circular reference: Array> ] ]');
     });
 
     it('should not indicate circular references incorrectly', function() {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       var array = [[1]];
-      expect(jasmineUnderTest.pp(array)).toEqual('[ [ 1 ] ]');
+      expect(pp(array)).toEqual('[ [ 1 ] ]');
     });
   });
 
   it('should stringify objects properly', function() {
-    expect(jasmineUnderTest.pp({ foo: 'bar' })).toEqual(
-      "Object({ foo: 'bar' })"
-    );
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp({ foo: 'bar' })).toEqual("Object({ foo: 'bar' })");
     expect(
-      jasmineUnderTest.pp({
+      pp({
         foo: 'bar',
         baz: 3,
         nullValue: null,
@@ -150,24 +154,24 @@ describe('jasmineUnderTest.pp', function() {
     ).toEqual(
       "Object({ foo: 'bar', baz: 3, nullValue: null, undefinedValue: undefined })"
     );
-    expect(jasmineUnderTest.pp({ foo: function() {}, bar: [1, 2, 3] })).toEqual(
+    expect(pp({ foo: function() {}, bar: [1, 2, 3] })).toEqual(
       'Object({ foo: Function, bar: [ 1, 2, 3 ] })'
     );
   });
 
   it('should stringify objects that almost look like DOM nodes', function() {
-    expect(jasmineUnderTest.pp({ nodeType: 1 })).toEqual(
-      'Object({ nodeType: 1 })'
-    );
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp({ nodeType: 1 })).toEqual('Object({ nodeType: 1 })');
   });
 
   it('should truncate objects with too many keys', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var originalMaxLength = jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH;
     var long = { a: 1, b: 2, c: 3 };
 
     try {
       jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = 2;
-      expect(jasmineUnderTest.pp(long)).toEqual('Object({ a: 1, b: 2, ... })');
+      expect(pp(long)).toEqual('Object({ a: 1, b: 2, ... })');
     } finally {
       jasmineUnderTest.MAX_PRETTY_PRINT_ARRAY_LENGTH = originalMaxLength;
     }
@@ -185,12 +189,11 @@ describe('jasmineUnderTest.pp', function() {
   }
 
   it('should truncate outputs that are too long', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var big = [{ a: 1, b: 'a long string' }, {}];
 
     withMaxChars(34, function() {
-      expect(jasmineUnderTest.pp(big)).toEqual(
-        "[ Object({ a: 1, b: 'a long st ..."
-      );
+      expect(pp(big)).toEqual("[ Object({ a: 1, b: 'a long st ...");
     });
   });
 
@@ -214,59 +217,55 @@ describe('jasmineUnderTest.pp', function() {
         jasmineToString: jasmine
           .createSpy('d jasmineToString')
           .and.returnValue('')
-      };
+      },
+      pp = jasmineUnderTest.makePrettyPrinter();
 
     withMaxChars(30, function() {
-      jasmineUnderTest.pp([{ a: a, b: b, c: c }, d]);
+      pp([{ a: a, b: b, c: c }, d]);
       expect(c.jasmineToString).not.toHaveBeenCalled();
       expect(d.jasmineToString).not.toHaveBeenCalled();
     });
   });
 
   it("should print 'null' as the constructor of an object with its own constructor property", function() {
-    expect(jasmineUnderTest.pp({ constructor: function() {} })).toContain(
-      'null({'
-    );
-    expect(jasmineUnderTest.pp({ constructor: 'foo' })).toContain('null({');
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp({ constructor: function() {} })).toContain('null({');
+    expect(pp({ constructor: 'foo' })).toContain('null({');
   });
 
   it('should not include inherited properties when stringifying an object', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var SomeClass = function SomeClass() {};
     SomeClass.prototype.foo = 'inherited foo';
     var instance = new SomeClass();
     instance.bar = 'my own bar';
-    expect(jasmineUnderTest.pp(instance)).toEqual(
-      "SomeClass({ bar: 'my own bar' })"
-    );
+    expect(pp(instance)).toEqual("SomeClass({ bar: 'my own bar' })");
   });
 
   it('should not recurse objects and arrays more deeply than jasmineUnderTest.MAX_PRETTY_PRINT_DEPTH', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var originalMaxDepth = jasmineUnderTest.MAX_PRETTY_PRINT_DEPTH;
     var nestedObject = { level1: { level2: { level3: { level4: 'leaf' } } } };
     var nestedArray = [1, [2, [3, [4, 'leaf']]]];
 
     try {
       jasmineUnderTest.MAX_PRETTY_PRINT_DEPTH = 2;
-      expect(jasmineUnderTest.pp(nestedObject)).toEqual(
+      expect(pp(nestedObject)).toEqual(
         'Object({ level1: Object({ level2: Object }) })'
       );
-      expect(jasmineUnderTest.pp(nestedArray)).toEqual('[ 1, [ 2, Array ] ]');
+      expect(pp(nestedArray)).toEqual('[ 1, [ 2, Array ] ]');
 
       jasmineUnderTest.MAX_PRETTY_PRINT_DEPTH = 3;
-      expect(jasmineUnderTest.pp(nestedObject)).toEqual(
+      expect(pp(nestedObject)).toEqual(
         'Object({ level1: Object({ level2: Object({ level3: Object }) }) })'
       );
-      expect(jasmineUnderTest.pp(nestedArray)).toEqual(
-        '[ 1, [ 2, [ 3, Array ] ] ]'
-      );
+      expect(pp(nestedArray)).toEqual('[ 1, [ 2, [ 3, Array ] ] ]');
 
       jasmineUnderTest.MAX_PRETTY_PRINT_DEPTH = 4;
-      expect(jasmineUnderTest.pp(nestedObject)).toEqual(
+      expect(pp(nestedObject)).toEqual(
         "Object({ level1: Object({ level2: Object({ level3: Object({ level4: 'leaf' }) }) }) })"
       );
-      expect(jasmineUnderTest.pp(nestedArray)).toEqual(
-        "[ 1, [ 2, [ 3, [ 4, 'leaf' ] ] ] ]"
-      );
+      expect(pp(nestedArray)).toEqual("[ 1, [ 2, [ 3, [ 4, 'leaf' ] ] ] ]");
     } finally {
       jasmineUnderTest.MAX_PRETTY_PRINT_DEPTH = originalMaxDepth;
     }
@@ -274,28 +273,32 @@ describe('jasmineUnderTest.pp', function() {
 
   it('should stringify immutable circular objects', function() {
     if (Object.freeze) {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       var frozenObject = { foo: { bar: 'baz' } };
       frozenObject.circular = frozenObject;
       frozenObject = Object.freeze(frozenObject);
-      expect(jasmineUnderTest.pp(frozenObject)).toEqual(
+      expect(pp(frozenObject)).toEqual(
         "Object({ foo: Object({ bar: 'baz' }), circular: <circular reference: Object> })"
       );
     }
   });
 
   it('should stringify RegExp objects properly', function() {
-    expect(jasmineUnderTest.pp(/x|y|z/)).toEqual('/x|y|z/');
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp(/x|y|z/)).toEqual('/x|y|z/');
   });
 
   it('should indicate circular object references', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var sampleValue = { foo: 'hello' };
     sampleValue.nested = sampleValue;
-    expect(jasmineUnderTest.pp(sampleValue)).toEqual(
+    expect(pp(sampleValue)).toEqual(
       "Object({ foo: 'hello', nested: <circular reference: Object> })"
     );
   });
 
   it('should indicate getters on objects as such', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var sampleValue = { id: 1 };
     if (sampleValue.__defineGetter__) {
       //not supported in IE!
@@ -304,34 +307,38 @@ describe('jasmineUnderTest.pp', function() {
       });
     }
     if (sampleValue.__defineGetter__) {
-      expect(jasmineUnderTest.pp(sampleValue)).toEqual(
+      expect(pp(sampleValue)).toEqual(
         'Object({ id: 1, calculatedValue: <getter> })'
       );
     } else {
-      expect(jasmineUnderTest.pp(sampleValue)).toEqual('Object({ id: 1 })');
+      expect(pp(sampleValue)).toEqual('Object({ id: 1 })');
     }
   });
 
   it('should not do HTML escaping of strings', function() {
-    expect(jasmineUnderTest.pp('some <b>html string</b> &', false)).toEqual(
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp('some <b>html string</b> &', false)).toEqual(
       "'some <b>html string</b> &'"
     );
   });
 
   it('should abbreviate the global (usually window) object', function() {
-    expect(jasmineUnderTest.pp(jasmine.getGlobal())).toEqual('<global>');
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp(jasmine.getGlobal())).toEqual('<global>');
   });
 
   it('should stringify Date objects properly', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var now = new Date();
-    expect(jasmineUnderTest.pp(now)).toEqual('Date(' + now.toString() + ')');
+    expect(pp(now)).toEqual('Date(' + now.toString() + ')');
   });
 
   describe('with a spy object', function() {
-    var env;
+    var env, pp;
 
     beforeEach(function() {
       env = new jasmineUnderTest.Env();
+      pp = jasmineUnderTest.makePrettyPrinter();
     });
 
     afterEach(function() {
@@ -353,19 +360,17 @@ describe('jasmineUnderTest.pp', function() {
       });
 
       spyRegistry.spyOn(TestObject, 'someFunction');
-      expect(jasmineUnderTest.pp(TestObject.someFunction)).toEqual(
-        'spy on someFunction'
-      );
+      expect(pp(TestObject.someFunction)).toEqual('spy on someFunction');
 
-      expect(jasmineUnderTest.pp(env.createSpy('something'))).toEqual(
-        'spy on something'
-      );
+      expect(pp(env.createSpy('something'))).toEqual('spy on something');
     });
 
     it('should stringify spyOn toString properly', function() {
       var TestObject = {
-        someFunction: function() {}
-      };
+          someFunction: function() {}
+        },
+        env = new jasmineUnderTest.Env(),
+        pp = jasmineUnderTest.makePrettyPrinter();
 
       var spyRegistry = new jasmineUnderTest.SpyRegistry({
         currentSpies: function() {
@@ -379,30 +384,40 @@ describe('jasmineUnderTest.pp', function() {
       spyRegistry.spyOn(TestObject, 'toString');
       var testSpyObj = env.createSpyObj('TheClassName', ['toString']);
 
-      expect(jasmineUnderTest.pp(testSpyObj)).toEqual(
-        'spy on TheClassName.toString'
-      );
+      expect(pp(testSpyObj)).toEqual('spy on TheClassName.toString');
     });
   });
 
   it('should stringify objects that implement jasmineToString', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var obj = {
       jasmineToString: function() {
         return 'strung';
       }
     };
 
-    expect(jasmineUnderTest.pp(obj)).toEqual('strung');
+    expect(pp(obj)).toEqual('strung');
+  });
+
+  it('should pass itself to jasmineToString', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter([]);
+    var obj = {
+      jasmineToString: jasmine.createSpy('jasmineToString').and.returnValue('')
+    };
+
+    pp(obj);
+    expect(obj.jasmineToString).toHaveBeenCalledWith(pp);
   });
 
   it('should stringify objects that implement custom toString', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var obj = {
       toString: function() {
         return 'my toString';
       }
     };
 
-    expect(jasmineUnderTest.pp(obj)).toEqual('my toString');
+    expect(pp(obj)).toEqual('my toString');
 
     // Simulate object from another global context (e.g. an iframe or Web Worker) that does not actually have a custom
     // toString despite obj.toString !== Object.prototype.toString
@@ -413,20 +428,22 @@ describe('jasmineUnderTest.pp', function() {
       }
     };
 
-    expect(jasmineUnderTest.pp(objFromOtherContext)).toEqual(
+    expect(pp(objFromOtherContext)).toEqual(
       "Object({ foo: 'bar', toString: Function })"
     );
   });
 
   it("should stringify objects have have a toString that isn't a function", function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var obj = {
       toString: 'foo'
     };
 
-    expect(jasmineUnderTest.pp(obj)).toEqual("Object({ toString: 'foo' })");
+    expect(pp(obj)).toEqual("Object({ toString: 'foo' })");
   });
 
   it('should stringify objects from anonymous constructors with custom toString', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var MyAnonymousConstructor = (function() {
       return function() {};
     })();
@@ -436,17 +453,19 @@ describe('jasmineUnderTest.pp', function() {
 
     var a = new MyAnonymousConstructor();
 
-    expect(jasmineUnderTest.pp(a)).toEqual('<anonymous>({  })');
+    expect(pp(a)).toEqual('<anonymous>({  })');
   });
 
   it('should handle objects with null prototype', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var obj = Object.create(null);
     obj.foo = 'bar';
 
-    expect(jasmineUnderTest.pp(obj)).toEqual("null({ foo: 'bar' })");
+    expect(pp(obj)).toEqual("null({ foo: 'bar' })");
   });
 
   it('should gracefully handle objects with invalid toString implementations', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var obj = {
       foo: {
         toString: function() {
@@ -476,8 +495,72 @@ describe('jasmineUnderTest.pp', function() {
       }
     };
 
-    expect(jasmineUnderTest.pp(obj)).toEqual(
+    expect(pp(obj)).toEqual(
       'Object({ foo: [object Number], bar: [object Object], baz: 3, qux: Error: bar, baddy: has-invalid-toString-method })'
     );
   });
+
+  describe('Custom object formatters', function() {
+    it('should use the first custom object formatter that does not return undefined', function() {
+      var customObjectFormatters = [
+          function(obj) {
+            return undefined;
+          },
+          function(obj) {
+            return '2nd: ' + obj.foo;
+          },
+          function(obj) {
+            return '3rd: ' + obj.foo;
+          }
+        ],
+        pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
+        obj = { foo: 'bar' };
+
+      expect(pp(obj)).toEqual('2nd: bar');
+    });
+
+    it('should fall back to built in logic if all custom object formatters return undefined', function() {
+      var customObjectFormatters = [
+          function(obj) {
+            return undefined;
+          }
+        ],
+        pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
+        obj = { foo: 'bar' };
+
+      expect(pp(obj)).toEqual("Object({ foo: 'bar' })");
+    });
+  });
+
+  describe('#customFormat_', function() {
+    it('should use the first custom object formatter that does not return undefined', function() {
+      var customObjectFormatters = [
+          function(obj) {
+            return undefined;
+          },
+          function(obj) {
+            return '2nd: ' + obj.foo;
+          },
+          function(obj) {
+            return '3rd: ' + obj.foo;
+          }
+        ],
+        pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
+        obj = { foo: 'bar' };
+
+      expect(pp.customFormat_(obj)).toEqual('2nd: bar');
+    });
+
+    it('should return undefined if all custom object formatters return undefined', function() {
+      var customObjectFormatters = [
+          function(obj) {
+            return undefined;
+          }
+        ],
+        pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
+        obj = { foo: 'bar' };
+
+      expect(pp.customFormat_(obj)).toBeUndefined();
+    });
+  });
 });
diff --git a/spec/core/asymmetricEqualityTesterArgCompatShimSpec.js b/spec/core/asymmetricEqualityTesterArgCompatShimSpec.js
new file mode 100644
index 00000000..c7c4d9b6
--- /dev/null
+++ b/spec/core/asymmetricEqualityTesterArgCompatShimSpec.js
@@ -0,0 +1,101 @@
+describe('asymmetricEqualityTesterArgCompatShim', function() {
+  it('provides all the properties of the MatchersUtil', function() {
+    var matchersUtil = {
+        foo: function() {},
+        bar: function() {}
+      },
+      shim = jasmineUnderTest.asymmetricEqualityTesterArgCompatShim(
+        matchersUtil,
+        []
+      );
+
+    expect(shim.foo).toBe(matchersUtil.foo);
+    expect(shim.bar).toBe(matchersUtil.bar);
+  });
+
+  it('provides all the properties of the customEqualityTesters', function() {
+    var customEqualityTesters = [function() {}, function() {}],
+      shim = jasmineUnderTest.asymmetricEqualityTesterArgCompatShim(
+        {},
+        customEqualityTesters
+      );
+
+    expect(shim.length).toBe(2);
+    expect(shim[0]).toBe(customEqualityTesters[0]);
+    expect(shim[1]).toBe(customEqualityTesters[1]);
+  });
+
+  it('provides all the properties of Array.prototype', function() {
+    var shim = jasmineUnderTest.asymmetricEqualityTesterArgCompatShim({}, []);
+
+    expect(shim.filter).toBe(Array.prototype.filter);
+    expect(shim.forEach).toBe(Array.prototype.forEach);
+    expect(shim.map).toBe(Array.prototype.map);
+  });
+
+  it('provides properties of Array.prototype', function() {
+    var keys = [
+        'concat',
+        'constructor',
+        'every',
+        'filter',
+        'forEach',
+        'indexOf',
+        'join',
+        'lastIndexOf',
+        'length',
+        'map',
+        'pop',
+        'push',
+        'reduce',
+        'reduceRight',
+        'reverse',
+        'shift',
+        'slice',
+        'some',
+        'sort',
+        'splice',
+        'toLocaleString',
+        'toString',
+        'unshift'
+      ],
+      optionalKeys = [
+        'copyWithin',
+        'entries',
+        'fill',
+        'find',
+        'findIndex',
+        'flat',
+        'flatMap',
+        'includes',
+        'keys',
+        'toSource',
+        'values'
+      ],
+      shim = jasmineUnderTest.asymmetricEqualityTesterArgCompatShim({}, []),
+      i,
+      k;
+
+    // Properties that are present on all supported runtimes
+    for (i = 0; i < keys.length; i++) {
+      k = keys[i];
+      expect(shim[k])
+        .withContext(k)
+        .not.toBeUndefined();
+      expect(shim[k])
+        .withContext(k)
+        .toBe(Array.prototype[k]);
+    }
+
+    // Properties that are present on only some supported runtimes
+    for (i = 0; i < optionalKeys.length; i++) {
+      k = optionalKeys[i];
+
+      if (shim[k] !== undefined) {
+        expect(shim[k])
+          .withContext(k)
+          .toBe(Array.prototype[k]);
+      }
+    }
+  });
+});
diff --git a/spec/core/asymmetric_equality/ArrayContainingSpec.js b/spec/core/asymmetric_equality/ArrayContainingSpec.js
index 30b5aaad..33e411e6 100644
--- a/spec/core/asymmetric_equality/ArrayContainingSpec.js
+++ b/spec/core/asymmetric_equality/ArrayContainingSpec.js
@@ -15,32 +15,41 @@ describe("ArrayContaining", function() {
 
   it("matches when the item is in the actual", function() {
     var containing = new jasmineUnderTest.ArrayContaining(["foo"]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(["foo"])).toBe(true);
+    expect(containing.asymmetricMatch(["foo"], matchersUtil)).toBe(true);
   });
 
   it("matches when additional items are in the actual", function() {
     var containing = new jasmineUnderTest.ArrayContaining(["foo"]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(["foo", "bar"])).toBe(true);
+    expect(containing.asymmetricMatch(["foo", "bar"], matchersUtil)).toBe(true);
   });
 
   it("does not match when the item is not in the actual", function() {
     var containing = new jasmineUnderTest.ArrayContaining(["foo"]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(["bar"])).toBe(false);
+    expect(containing.asymmetricMatch(["bar"], matchersUtil)).toBe(false);
   });
 
   it("does not match when the actual is not an array", function() {
     var containing = new jasmineUnderTest.ArrayContaining(["foo"]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch("foo")).toBe(false);
+    expect(containing.asymmetricMatch("foo", matchersUtil)).toBe(false);
   });
 
   it("jasmineToStrings itself", function() {
-    var containing = new jasmineUnderTest.ArrayContaining([]);
+    var sample = [],
+      matcher = new jasmineUnderTest.ArrayContaining(sample),
+      pp = jasmine.createSpy('pp').and.returnValue('sample');
 
-    expect(containing.jasmineToString()).toMatch("<jasmine.arrayContaining");
+    expect(matcher.jasmineToString(pp)).toEqual(
+      '<jasmine.arrayContaining(sample)>'
+    );
+    expect(pp).toHaveBeenCalledWith(sample);
   });
 
   it("uses custom equality testers", function() {
@@ -52,7 +61,8 @@ describe("ArrayContaining", function() {
       }
     };
     var containing = new jasmineUnderTest.ArrayContaining(["fooVal"]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]});
 
-    expect(containing.asymmetricMatch(["fooBar"], [tester])).toBe(true);
+    expect(containing.asymmetricMatch(["fooBar"], matchersUtil)).toBe(true);
   });
 });
diff --git a/spec/core/asymmetric_equality/ArrayWithExactContentsSpec.js b/spec/core/asymmetric_equality/ArrayWithExactContentsSpec.js
index 1cae0a0b..fd0bb30c 100644
--- a/spec/core/asymmetric_equality/ArrayWithExactContentsSpec.js
+++ b/spec/core/asymmetric_equality/ArrayWithExactContentsSpec.js
@@ -1,8 +1,9 @@
 describe("ArrayWithExactContents", function() {
   it("matches an array with the same items in a different order", function() {
     var matcher = new jasmineUnderTest.ArrayWithExactContents(['a', 2, /a/]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(matcher.asymmetricMatch([2, 'a', /a/])).toBe(true);
+    expect(matcher.asymmetricMatch([2, 'a', /a/], matchersUtil)).toBe(true);
   });
 
   it("does not work when not passed an array", function() {
@@ -15,21 +16,28 @@ describe("ArrayWithExactContents", function() {
 
   it("does not match when an item is missing", function() {
     var matcher = new jasmineUnderTest.ArrayWithExactContents(['a', 2, /a/]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(matcher.asymmetricMatch(['a', 2])).toBe(false);
-    expect(matcher.asymmetricMatch(['a', 2, undefined])).toBe(false);
+    expect(matcher.asymmetricMatch(['a', 2], matchersUtil)).toBe(false);
+    expect(matcher.asymmetricMatch(['a', 2, undefined], matchersUtil)).toBe(false);
   });
 
   it("does not match when there is an extra item", function() {
     var matcher = new jasmineUnderTest.ArrayWithExactContents(['a']);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(matcher.asymmetricMatch(['a', 2])).toBe(false);
+    expect(matcher.asymmetricMatch(['a', 2], matchersUtil)).toBe(false);
   });
 
   it("jasmineToStrings itself", function() {
-    var matcher = new jasmineUnderTest.ArrayWithExactContents([]);
+    var sample = [],
+      matcher = new jasmineUnderTest.ArrayWithExactContents(sample),
+      pp = jasmine.createSpy('pp').and.returnValue('sample');
 
-    expect(matcher.jasmineToString()).toMatch("<jasmine.arrayWithExactContents");
+    expect(matcher.jasmineToString(pp)).toEqual(
+      '<jasmine.arrayWithExactContents(sample)>'
+    );
+    expect(pp).toHaveBeenCalledWith(sample);
   });
 
   it("uses custom equality testers", function() {
@@ -41,7 +49,8 @@ describe("ArrayWithExactContents", function() {
       }
     };
     var matcher = new jasmineUnderTest.ArrayWithExactContents(["fooVal"]);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]});
 
-    expect(matcher.asymmetricMatch(["fooBar"], [tester])).toBe(true);
+    expect(matcher.asymmetricMatch(["fooBar"], matchersUtil)).toBe(true);
   });
 });
diff --git a/spec/core/asymmetric_equality/MapContainingSpec.js b/spec/core/asymmetric_equality/MapContainingSpec.js
index a214dce8..c9ea83a6 100644
--- a/spec/core/asymmetric_equality/MapContainingSpec.js
+++ b/spec/core/asymmetric_equality/MapContainingSpec.js
@@ -31,8 +31,9 @@ describe('MapContaining', function() {
       ['foo', [1, 2, 3]],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(true);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(true);
   });
 
   it('does not match when a key is not in actual', function() {
@@ -46,8 +47,9 @@ describe('MapContaining', function() {
       ['foo', [1, 2, 3]],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(false);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(false);
   });
 
   it('does not match when a value is not in actual', function() {
@@ -61,8 +63,9 @@ describe('MapContaining', function() {
       ['foo', [1, 2]],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(false);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(false);
   });
 
   it('matches when all the key/value pairs in sample have asymmetric matches in actual', function() {
@@ -74,17 +77,18 @@ describe('MapContaining', function() {
 
     var containingMap = new MapI([
       [
-        jasmine.stringMatching(/^foo\d/),
+        jasmineUnderTest.stringMatching(/^foo\d/),
         'bar'
       ],
       [
         'baz',
-        jasmine.arrayContaining([2, 3])
+        jasmineUnderTest.arrayContaining([2, 3])
       ],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(true);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(true);
   });
 
   it('does not match when a key in sample has no asymmetric matches in actual', function() {
@@ -95,17 +99,18 @@ describe('MapContaining', function() {
 
     var containingMap = new MapI([
       [
-        jasmine.stringMatching(/^foo\d/),
+        jasmineUnderTest.stringMatching(/^foo\d/),
         'bar'
       ],
       [
         'baz',
-        jasmine.arrayContaining([2, 3])
+        jasmineUnderTest.arrayContaining([2, 3])
       ],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(false);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(false);
   });
 
   it('does not match when a value in sample has no asymmetric matches in actual', function() {
@@ -116,17 +121,18 @@ describe('MapContaining', function() {
 
     var containingMap = new MapI([
       [
-        jasmine.stringMatching(/^foo\d/),
+        jasmineUnderTest.stringMatching(/^foo\d/),
         'bar'
       ],
       [
         'baz',
-        jasmine.arrayContaining([4, 5])
+        jasmineUnderTest.arrayContaining([4, 5])
       ],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(false);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(false);
   });
 
   it('matches recursively', function() {
@@ -147,8 +153,9 @@ describe('MapContaining', function() {
       ],
     ]);
     var containing = new jasmineUnderTest.MapContaining(containingMap);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualMap)).toBe(true);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(true);
   });
 
   it('uses custom equality testers', function() {
@@ -158,8 +165,9 @@ describe('MapContaining', function() {
     }
     var actualMap = new MapI([['foo', -1]]);
     var containing = new jasmineUnderTest.MapContaining(new MapI([['foo', -2]]));
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]});
 
-    expect(containing.asymmetricMatch(actualMap, [tester])).toBe(true);
+    expect(containing.asymmetricMatch(actualMap, matchersUtil)).toBe(true);
   });
 
   it('does not match when actual is not a map', function() {
@@ -176,8 +184,13 @@ describe('MapContaining', function() {
   });
 
   it('defines a `jasmineToString` method', function() {
-    var containing = new jasmineUnderTest.MapContaining(new Map());
+    var sample = new Map(),
+      containing = new jasmineUnderTest.MapContaining(sample),
+      pp = jasmine.createSpy('pp').and.returnValue('sample');
 
-    expect(containing.jasmineToString()).toMatch(/^<jasmine\.mapContaining/);
+    expect(containing.jasmineToString(pp)).toEqual(
+      '<jasmine.mapContaining(sample)>'
+    );
+    expect(pp).toHaveBeenCalledWith(sample);
   });
 });
diff --git a/spec/core/asymmetric_equality/ObjectContainingSpec.js b/spec/core/asymmetric_equality/ObjectContainingSpec.js
index cdcbf19f..bec44fe2 100644
--- a/spec/core/asymmetric_equality/ObjectContainingSpec.js
+++ b/spec/core/asymmetric_equality/ObjectContainingSpec.js
@@ -2,8 +2,9 @@ describe("ObjectContaining", function() {
 
   it("matches any object actual to an empty object", function() {
     var containing = new jasmineUnderTest.ObjectContaining({});
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({foo: 1})).toBe(true);
+    expect(containing.asymmetricMatch({foo: 1}, matchersUtil)).toBe(true);
   });
 
   it("does not match when the actual is not an object", function() {
@@ -24,58 +25,72 @@ describe("ObjectContaining", function() {
 
   it("matches when the key/value pair is present in the actual", function() {
     var containing = new jasmineUnderTest.ObjectContaining({foo: "fooVal"});
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({foo: "fooVal", bar: "barVal"})).toBe(true);
+    expect(containing.asymmetricMatch({foo: "fooVal", bar: "barVal"}, matchersUtil)).toBe(true);
   });
 
   it("does not match when the key/value pair is not present in the actual", function() {
     var containing = new jasmineUnderTest.ObjectContaining({foo: "fooVal"});
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({bar: "barVal", quux: "quuxVal"})).toBe(false);
+    expect(containing.asymmetricMatch({bar: "barVal", quux: "quuxVal"}, matchersUtil)).toBe(false);
   });
 
   it("does not match when the key is present but the value is different in the actual", function() {
     var containing = new jasmineUnderTest.ObjectContaining({foo: "other"});
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({foo: "fooVal", bar: "barVal"})).toBe(false);
+    expect(containing.asymmetricMatch({foo: "fooVal", bar: "barVal"}, matchersUtil)).toBe(false);
   });
 
   it("jasmineToString's itself", function() {
-    var containing = new jasmineUnderTest.ObjectContaining({});
+    var sample = {},
+      matcher = new jasmineUnderTest.ObjectContaining(sample),
+      pp = jasmine.createSpy('pp').and.returnValue('sample');
+
+    expect(matcher.jasmineToString(pp)).toEqual(
+      '<jasmine.objectContaining(sample)>'
+    );
+    expect(pp).toHaveBeenCalledWith(sample);
 
-    expect(containing.jasmineToString()).toMatch("<jasmine.objectContaining");
   });
 
   it("matches recursively", function() {
     var containing = new jasmineUnderTest.ObjectContaining({one: new jasmineUnderTest.ObjectContaining({two: {}})});
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({one: {two: {}}})).toBe(true);
+    expect(containing.asymmetricMatch({one: {two: {}}}, matchersUtil)).toBe(true);
   });
 
   it("matches when key is present with undefined value", function() {
     var containing = new jasmineUnderTest.ObjectContaining({ one: undefined });
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({ one: undefined })).toBe(true);
+    expect(containing.asymmetricMatch({ one: undefined }, matchersUtil)).toBe(true);
   });
 
   it("does not match when key with undefined value is not present", function() {
     var containing = new jasmineUnderTest.ObjectContaining({ one: undefined });
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch({})).toBe(false);
+    expect(containing.asymmetricMatch({}, matchersUtil)).toBe(false);
   });
 
   it("matches defined properties", function(){
     var containing = new jasmineUnderTest.ObjectContaining({ foo: "fooVal" });
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
     var definedPropertyObject = {};
     Object.defineProperty(definedPropertyObject, "foo", {
       get: function() { return "fooVal" }
     });
-    expect(containing.asymmetricMatch(definedPropertyObject)).toBe(true);
+    expect(containing.asymmetricMatch(definedPropertyObject, matchersUtil)).toBe(true);
   });
 
   it("matches prototype properties", function(){
     var containing = new jasmineUnderTest.ObjectContaining({ foo: "fooVal" });
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
     var prototypeObject = {foo: "fooVal"};
     var obj;
@@ -89,7 +104,7 @@ describe("ObjectContaining", function() {
       obj = new Foo();
     }
 
-    expect(containing.asymmetricMatch(obj)).toBe(true);
+    expect(containing.asymmetricMatch(obj, matchersUtil)).toBe(true);
   });
 
   it("uses custom equality testers", function() {
@@ -101,8 +116,9 @@ describe("ObjectContaining", function() {
       }
     };
     var containing = new jasmineUnderTest.ObjectContaining({foo: "fooVal"});
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]});
 
-    expect(containing.asymmetricMatch({foo: "fooBar"}, [tester])).toBe(true);
+    expect(containing.asymmetricMatch({foo: "fooBar"}, matchersUtil)).toBe(true);
   });
 
   describe("valuesForDiff_", function() {
diff --git a/spec/core/asymmetric_equality/SetContainingSpec.js b/spec/core/asymmetric_equality/SetContainingSpec.js
index d1ae7a5a..50ee9d5b 100644
--- a/spec/core/asymmetric_equality/SetContainingSpec.js
+++ b/spec/core/asymmetric_equality/SetContainingSpec.js
@@ -28,8 +28,9 @@ describe('SetContaining', function() {
       [1, 2, 3], {'foo': 'bar'}
     ]);
     var containing = new jasmineUnderTest.SetContaining(containingSet);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualSet)).toBe(true);
+    expect(containing.asymmetricMatch(actualSet, matchersUtil)).toBe(true);
   });
 
   it('does not match when a value is not in actual', function() {
@@ -41,8 +42,9 @@ describe('SetContaining', function() {
       [1, 2], {'foo': 'bar'}
     ]);
     var containing = new jasmineUnderTest.SetContaining(containingSet);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualSet)).toBe(false);
+    expect(containing.asymmetricMatch(actualSet, matchersUtil)).toBe(false);
   });
 
   it('matches when all the values in sample have asymmetric matches in actual', function() {
@@ -51,12 +53,13 @@ describe('SetContaining', function() {
     ]);
 
     var containingSet = new SetI([
-      jasmine.stringMatching(/^foo\d/),
-      jasmine.arrayContaining([2, 3]),
+      jasmineUnderTest.stringMatching(/^foo\d/),
+      jasmineUnderTest.arrayContaining([2, 3]),
     ]);
     var containing = new jasmineUnderTest.SetContaining(containingSet);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualSet)).toBe(true);
+    expect(containing.asymmetricMatch(actualSet, matchersUtil)).toBe(true);
   });
 
   it('does not match when a value in sample has no asymmetric matches in actual', function() {
@@ -69,8 +72,9 @@ describe('SetContaining', function() {
       jasmine.arrayContaining([2, 3]),
     ]);
     var containing = new jasmineUnderTest.SetContaining(containingSet);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualSet)).toBe(false);
+    expect(containing.asymmetricMatch(actualSet, matchersUtil)).toBe(false);
   });
 
   it('matches recursively', function() {
@@ -82,8 +86,9 @@ describe('SetContaining', function() {
       new jasmineUnderTest.SetContaining(new SetI(['bar'])), 'foo'
     ]);
     var containing = new jasmineUnderTest.SetContaining(containingSet);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-    expect(containing.asymmetricMatch(actualSet)).toBe(true);
+    expect(containing.asymmetricMatch(actualSet, matchersUtil)).toBe(true);
   });
 
   it('uses custom equality testers', function() {
@@ -93,8 +98,9 @@ describe('SetContaining', function() {
     }
     var actualSet = new SetI(['foo', -1]);
     var containing = new jasmineUnderTest.SetContaining(new SetI([-2, 'foo']));
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]});
 
-    expect(containing.asymmetricMatch(actualSet, [tester])).toBe(true);
+    expect(containing.asymmetricMatch(actualSet, matchersUtil)).toBe(true);
   });
 
   it('does not match when actual is not a set', function() {
@@ -111,8 +117,13 @@ describe('SetContaining', function() {
   });
 
   it('defines a `jasmineToString` method', function() {
-    var containing = new jasmineUnderTest.SetContaining(new Set());
+    var sample = new Set(),
+      containing = new jasmineUnderTest.SetContaining(sample),
+      pp = jasmine.createSpy('pp').and.returnValue('sample');
 
-    expect(containing.jasmineToString()).toMatch(/^<jasmine\.setContaining/);
+    expect(containing.jasmineToString(pp)).toEqual(
+      '<jasmine.setContaining(sample)>'
+    );
+    expect(pp).toHaveBeenCalledWith(sample);
   });
 });
diff --git a/spec/core/integration/CustomAsyncMatchersSpec.js b/spec/core/integration/CustomAsyncMatchersSpec.js
index 9f0f4a16..e1a8286c 100644
--- a/spec/core/integration/CustomAsyncMatchersSpec.js
+++ b/spec/core/integration/CustomAsyncMatchersSpec.js
@@ -115,4 +115,36 @@ describe('Custom Async Matchers (Integration)', function() {
     env.addReporter({ specDone: specExpectations, jasmineDone: done });
     env.execute();
   });
+
+  it("provides custom equality testers to the matcher factory via matchersUtil", function(done) {
+    jasmine.getEnv().requirePromises();
+
+    var matcherFactory = function (matchersUtil) {
+        return {
+          compare: function (actual, expected) {
+            return Promise.resolve({pass: matchersUtil.equals(actual[0], expected)});
+          }
+        };
+      },
+      customEqualityFn = jasmine.createSpy("customEqualityFn").and.callFake(function (a, b) {
+        return a.toString() === b;
+      });
+
+    env.it("spec with expectation", function() {
+      env.addCustomEqualityTester(customEqualityFn);
+      env.addAsyncMatchers({
+        toBeArrayWithFirstElement: matcherFactory
+      });
+
+      return env.expectAsync([1, 2]).toBeArrayWithFirstElement("1");
+    });
+
+    var specExpectations = function(result) {
+      expect(customEqualityFn).toHaveBeenCalledWith(1, "1");
+      expect(result.failedExpectations).toEqual([]);
+    };
+
+    env.addReporter({ specDone: specExpectations, jasmineDone: done });
+    env.execute();
+  });
 });
diff --git a/spec/core/integration/CustomMatchersSpec.js b/spec/core/integration/CustomMatchersSpec.js
index af8f4cbc..c9812949 100644
--- a/spec/core/integration/CustomMatchersSpec.js
+++ b/spec/core/integration/CustomMatchersSpec.js
@@ -1,8 +1,8 @@
-describe("Custom Matchers (Integration)", function() {
+describe("Custom Matchers (Integration)", function () {
   var env;
   var fakeTimer;
 
-  beforeEach(function() {
+  beforeEach(function () {
     env = new jasmineUnderTest.Env();
     env.configure({random: false});
   });
@@ -11,13 +11,13 @@ describe("Custom Matchers (Integration)", function() {
     env.cleanup_();
   });
 
-  it("allows adding more matchers local to a spec", function(done) {
-    env.it('spec defining a custom matcher', function() {
+  it("allows adding more matchers local to a spec", function (done) {
+    env.it('spec defining a custom matcher', function () {
       env.addMatchers({
-        matcherForSpec: function() {
+        matcherForSpec: function () {
           return {
-            compare: function(actual, expected) {
-              return { pass: false, message: "matcherForSpec: actual: " + actual + "; expected: " + expected };
+            compare: function (actual, expected) {
+              return {pass: false, message: "matcherForSpec: actual: " + actual + "; expected: " + expected};
             }
           }
         }
@@ -87,6 +87,8 @@ describe("Custom Matchers (Integration)", function() {
 
   it("supports asymmetric equality testers that take a list of custom equality testers", function(done) {
     // TODO: remove this in the next major release.
+    spyOn(jasmineUnderTest, 'getEnv').and.returnValue(env);
+
     env.it("spec using custom asymmetric equality tester", function() {
       var customEqualityFn = function(a, b) {
         if (a === 2 && b === "two") {
@@ -233,4 +235,34 @@ describe("Custom Matchers (Integration)", function() {
     env.addReporter({ specDone: specExpectations, jasmineDone: done });
     env.execute();
   });
+
+  it("provides custom equality testers to the matcher factory via matchersUtil", function (done) {
+    var matcherFactory = function (matchersUtil) {
+        return {
+          compare: function (actual, expected) {
+            return {pass: matchersUtil.equals(actual[0], expected)};
+          }
+        };
+      },
+      customEqualityFn = jasmine.createSpy("customEqualityFn").and.callFake(function (a, b) {
+        return a.toString() === b;
+      });
+
+    env.it("spec with expectation", function () {
+      env.addCustomEqualityTester(customEqualityFn);
+      env.addMatchers({
+        toBeArrayWithFirstElement: matcherFactory
+      });
+
+      env.expect([1, 2]).toBeArrayWithFirstElement("1");
+    });
+
+    var specExpectations = function (result) {
+      expect(customEqualityFn).toHaveBeenCalledWith(1, "1");
+      expect(result.failedExpectations).toEqual([]);
+    };
+
+    env.addReporter({specDone: specExpectations, jasmineDone: done});
+    env.execute();
+  });
 });
diff --git a/spec/core/integration/CustomObjectFormatterSpec.js b/spec/core/integration/CustomObjectFormatterSpec.js
new file mode 100644
index 00000000..10ed4d71
--- /dev/null
+++ b/spec/core/integration/CustomObjectFormatterSpec.js
@@ -0,0 +1,67 @@
+describe("Custom object formatters", function() {
+  var env;
+
+  beforeEach(function() {
+    env = new jasmineUnderTest.Env();
+    env.configure({random: false});
+  });
+
+  it("scopes custom object formatters to a spec", function(done) {
+    env.it('a spec with custom pretty-printer', function() {
+      env.addCustomObjectFormatter(function(obj) { return 'custom(' + obj + ')'; });
+      env.expect(42).toBeUndefined();
+    });
+
+    env.it('a spec without custom pretty-printer', function() {
+      env.expect(42).toBeUndefined();
+    });
+
+    var specResults = [];
+    var specDone = function(result) {
+      specResults.push(result);
+    };
+    var expectations = function() {
+      expect(specResults[0].failedExpectations[0].message).toEqual("Expected custom(42) to be undefined.");
+      expect(specResults[1].failedExpectations[0].message).toEqual("Expected 42 to be undefined.");
+      done();
+    };
+    env.addReporter({ specDone:specDone, jasmineDone: expectations});
+
+    env.execute();
+  });
+
+  it("scopes custom object formatters to a suite", function(done) {
+    env.it('a spec without custom pretty-printer', function() {
+      env.expect(42).toBeUndefined();
+    });
+
+    env.describe('with custom pretty-printer', function() {
+      env.beforeEach(function() {
+        env.addCustomObjectFormatter(function(obj) { return 'custom(' + obj + ')'; });
+      });
+
+      env.it('a spec', function() {
+        env.expect(42).toBeUndefined();
+      });
+    });
+
+    var specResults = [];
+    var specDone = function(result) {
+      specResults.push(result);
+    };
+    var expectations = function() {
+      expect(specResults[0].failedExpectations[0].message).toEqual("Expected 42 to be undefined.");
+      expect(specResults[1].failedExpectations[0].message).toEqual("Expected custom(42) to be undefined.");
+      done();
+    };
+    env.addReporter({ specDone:specDone, jasmineDone: expectations});
+
+    env.execute();
+  });
+
+  it("throws an exception if you try to add a custom object formatter outside a runable", function() {
+    expect(function() {
+      env.addCustomObjectFormatter(function() {});
+    }).toThrowError('Custom object formatters must be added in a before function or a spec')
+  });
+});
diff --git a/spec/core/integration/EnvSpec.js b/spec/core/integration/EnvSpec.js
index 490e9d94..8ecd8ee4 100644
--- a/spec/core/integration/EnvSpec.js
+++ b/spec/core/integration/EnvSpec.js
@@ -2584,4 +2584,33 @@ describe("Env integration", function() {
 
     env.execute();
   });
+
+  it("supports asymmetric equality testers that take a matchersUtil", function(done) {
+    var env = new jasmineUnderTest.Env();
+
+    env.it("spec using custom asymmetric equality tester", function() {
+      var customEqualityFn = function(a, b) {
+        if (a === 2 && b === "two") {
+          return true;
+        }
+      };
+      var arrayWithFirstElement = function(sample) {
+        return {
+          asymmetricMatch: function (actual, matchersUtil) {
+            return matchersUtil.equals(sample, actual[0]);
+          }
+        };
+      };
+
+      env.addCustomEqualityTester(customEqualityFn);
+      env.expect(["two"]).toEqual(arrayWithFirstElement(2));
+    });
+
+    var specExpectations = function(result) {
+      expect(result.status).toEqual('passed');
+    };
+
+    env.addReporter({ specDone: specExpectations, jasmineDone: done });
+    env.execute();
+  });
 });
diff --git a/spec/core/integration/MatchersSpec.js b/spec/core/integration/MatchersSpec.js
index 25af3217..7f19a95c 100644
--- a/spec/core/integration/MatchersSpec.js
+++ b/spec/core/integration/MatchersSpec.js
@@ -56,6 +56,27 @@ describe('Matchers (Integration)', function() {
     });
   }
 
+  function verifyFailsWithCustomObjectFormatters(config) {
+    it('uses custom object formatters', function(done) {
+      env.it('a spec', function () {
+        env.addCustomObjectFormatter(config.formatter);
+        config.expectations(env);
+      });
+
+      var specExpectations = function (result) {
+        expect(result.status).toEqual('failed');
+        expect(result.failedExpectations.length)
+          .withContext('Number of failed expectations')
+          .toEqual(1);
+        expect(result.failedExpectations[0].message)
+          .toEqual(config.expectedMessage);
+      };
+
+      env.addReporter({specDone: specExpectations, jasmineDone: done});
+      env.execute();
+    });
+  }
+
   function verifyPassesAsync(expectations) {
     it('passes', function(done) {
       jasmine.getEnv().requirePromises();
@@ -107,6 +128,30 @@ describe('Matchers (Integration)', function() {
     });
   }
 
+  function verifyFailsWithCustomObjectFormattersAsync(config) {
+    it('uses custom object formatters', function(done) {
+      var env = new jasmineUnderTest.Env();
+      jasmine.getEnv().requirePromises();
+      env.it('a spec', function () {
+        env.addCustomObjectFormatter(config.formatter);
+        return config.expectations(env);
+      });
+
+      var specExpectations = function (result) {
+        expect(result.status).toEqual('failed');
+        expect(result.failedExpectations.length)
+          .withContext('Number of failed expectations')
+          .toEqual(1);
+        expect(result.failedExpectations[0].message)
+          .toEqual(config.expectedMessage);
+      };
+
+      env.addReporter({specDone: specExpectations, jasmineDone: done});
+      env.execute();
+    });
+  }
+
+
   describe('nothing', function() {
     verifyPasses(function(env) {
       env.expect().nothing();
@@ -223,6 +268,16 @@ describe('Matchers (Integration)', function() {
     verifyFails(function(env) {
       env.expect(2).toBeNaN();
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        env.expect(1).toBeNaN();
+      },
+      expectedMessage: 'Expected |1| to be NaN.'
+    });
   });
 
   describe('toBeNegativeInfinity', function() {
@@ -233,6 +288,16 @@ describe('Matchers (Integration)', function() {
     verifyFails(function(env) {
       env.expect(2).toBeNegativeInfinity();
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        env.expect(1).toBeNegativeInfinity();
+      },
+      expectedMessage: 'Expected |1| to be -Infinity.'
+    });
   });
 
   describe('toBeNull', function() {
@@ -253,6 +318,16 @@ describe('Matchers (Integration)', function() {
     verifyFails(function(env) {
       env.expect(2).toBePositiveInfinity();
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        env.expect(1).toBePositiveInfinity();
+      },
+      expectedMessage: 'Expected |1| to be Infinity.'
+    })
   });
 
   describe('toBeResolved', function() {
@@ -276,6 +351,17 @@ describe('Matchers (Integration)', function() {
     verifyFailsAsync(function(env) {
       return env.expectAsync(Promise.resolve('foo')).toBeResolvedTo('bar');
     });
+
+    verifyFailsWithCustomObjectFormattersAsync({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        return env.expectAsync(Promise.resolve('x')).toBeResolvedTo('y');
+      },
+      expectedMessage: 'Expected a promise to be resolved to |y| ' +
+        'but it was resolved to |x|.'
+    });
   });
 
   describe('toBeRejected', function() {
@@ -299,6 +385,17 @@ describe('Matchers (Integration)', function() {
     verifyFailsAsync(function(env) {
       return env.expectAsync(Promise.resolve()).toBeRejectedWith('nope');
     });
+
+    verifyFailsWithCustomObjectFormattersAsync({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        return env.expectAsync(Promise.reject('x')).toBeRejectedWith('y');
+      },
+      expectedMessage: 'Expected a promise to be rejected with |y| ' +
+        'but it was rejected with |x|.'
+    });
   });
 
   describe('toBeRejectedWithError', function() {
@@ -309,6 +406,17 @@ describe('Matchers (Integration)', function() {
     verifyFailsAsync(function(env) {
       return env.expectAsync(Promise.resolve()).toBeRejectedWithError(Error);
     });
+
+    verifyFailsWithCustomObjectFormattersAsync({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        return env.expectAsync(Promise.reject('foo')).toBeRejectedWithError('foo');
+      },
+      expectedMessage: 'Expected a promise to be rejected with Error: |foo| ' +
+        'but it was rejected with |foo|.'
+    });
   });
 
   describe('toBeTrue', function() {
@@ -365,6 +473,20 @@ describe('Matchers (Integration)', function() {
     verifyFails(function(env) {
       env.expect('a').toEqual('b');
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        if (val === 5) {
+          return "five"
+        } else if (val === 4) {
+          return "four"
+        }
+      },
+      expectations: function(env) {
+        env.expect([{foo: 4}]).toEqual([{foo: 5}]);
+      },
+      expectedMessage: 'Expected $[0].foo = four to equal five.'
+    });
   });
 
   describe('toHaveBeenCalled', function() {
@@ -423,6 +545,19 @@ describe('Matchers (Integration)', function() {
       var spy = env.createSpy();
       env.expect(spy).toHaveBeenCalledWith('foo');
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        var spy = env.createSpy('foo');
+        env.expect(spy).toHaveBeenCalledWith('x');
+      },
+      expectedMessage: 'Expected spy foo to have been called with:\n' +
+        '  |x|\n' +
+        'but it was never called.'
+    });
   });
 
   describe('toHaveClass', function() {
@@ -455,12 +590,28 @@ describe('Matchers (Integration)', function() {
 
   describe('toThrow', function() {
     verifyPasses(function(env) {
-      env.expect(function() { throw new Error(); }).toThrow();
+      env.addCustomEqualityTester(function(a, b) {
+        return a.toString() === b.toString();
+      });
+      env.expect(function() { throw '5'; }).toThrow(5);
     });
 
     verifyFails(function(env) {
       env.expect(function() {}).toThrow();
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        var spy = env.createSpy('foo');
+        env.expect(function() {
+          throw 'x'
+        }).not.toThrow();
+      },
+      expectedMessage: 'Expected function not to throw, but it threw |x|.'
+    });
   });
 
   describe('toThrowError', function() {
@@ -471,6 +622,19 @@ describe('Matchers (Integration)', function() {
     verifyFails(function(env) {
       env.expect(function() { }).toThrowError();
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        var spy = env.createSpy('foo');
+        env.expect(function() {
+          throw 'x'
+        }).toThrowError();
+      },
+      expectedMessage: 'Expected function to throw an Error, but it threw |x|.'
+    });
   });
 
   describe('toThrowMatching', function() {
@@ -485,5 +649,21 @@ describe('Matchers (Integration)', function() {
     verifyFails(function(env) {
       env.expect(throws).toThrowMatching(function() { return false; });
     });
+
+    verifyFailsWithCustomObjectFormatters({
+      formatter: function(val) {
+        return '|' + val + '|';
+      },
+      expectations: function(env) {
+        var spy = env.createSpy('foo');
+        env.expect(function() {
+          throw new Error('nope')
+        }).toThrowMatching(function() {
+          return false;
+        });
+      },
+      expectedMessage: 'Expected function to throw an exception matching ' +
+        'a predicate, but it threw Error with message |nope|.'
+    });
   });
 });
diff --git a/spec/core/matchers/DiffBuilderSpec.js b/spec/core/matchers/DiffBuilderSpec.js
index 2fe8f1bf..6d82c3f8 100644
--- a/spec/core/matchers/DiffBuilderSpec.js
+++ b/spec/core/matchers/DiffBuilderSpec.js
@@ -1,47 +1,136 @@
-describe("DiffBuilder", function() {
-  it("records the actual and expected objects", function() {
+describe("DiffBuilder", function () {
+  it("records the actual and expected objects", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
-    diffBuilder.record({x: 'actual'}, {x: 'expected'});
+    diffBuilder.setRoots({x: 'actual'}, {x: 'expected'});
+    diffBuilder.recordMismatch();
 
     expect(diffBuilder.getMessage()).toEqual("Expected Object({ x: 'actual' }) to equal Object({ x: 'expected' }).");
   });
 
-  it("prints the path at which the difference was found", function() {
+  it("prints the path at which the difference was found", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
+    diffBuilder.setRoots({foo: {x: 'actual'}}, {foo: {x: 'expected'}});
 
-    diffBuilder.withPath('foo', function() {
-      diffBuilder.record({x: 'actual'}, {x: 'expected'});
+    diffBuilder.withPath('foo', function () {
+      diffBuilder.recordMismatch();
     });
 
     expect(diffBuilder.getMessage()).toEqual("Expected $.foo = Object({ x: 'actual' }) to equal Object({ x: 'expected' }).");
   });
 
-  it("prints multiple messages, separated by newlines", function() {
+  it("prints multiple messages, separated by newlines", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
+    diffBuilder.setRoots({foo: 1, bar: 3}, {foo: 2, bar: 4});
 
-    diffBuilder.withPath('foo', function() {
-      diffBuilder.record(1, 2);
+    diffBuilder.withPath('foo', function () {
+      diffBuilder.recordMismatch();
+    });
+    diffBuilder.withPath('bar', function () {
+      diffBuilder.recordMismatch();
     });
 
     var message =
       "Expected $.foo = 1 to equal 2.\n" +
-      "Expected 3 to equal 4.";
+      "Expected $.bar = 3 to equal 4.";
 
-    diffBuilder.record(3, 4);
     expect(diffBuilder.getMessage()).toEqual(message);
   });
 
-  it("allows customization of the message", function() {
+  it("allows customization of the message", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
+    diffBuilder.setRoots({x: 'bar'}, {x: 'foo'});
 
     function darthVaderFormatter(actual, expected, path) {
       return "I find your lack of " + expected + " disturbing. (was " + actual + ", at " + path + ")"
     }
 
-    diffBuilder.withPath('x', function() {
-      diffBuilder.record('bar', 'foo', darthVaderFormatter);
+    diffBuilder.withPath('x', function () {
+      diffBuilder.recordMismatch(darthVaderFormatter);
     });
 
     expect(diffBuilder.getMessage()).toEqual("I find your lack of foo disturbing. (was bar, at $.x)");
   });
+
+  it("uses the injected pretty-printer", function () {
+    var prettyPrinter = function (val) {
+        return '|' + val + '|';
+      },
+      diffBuilder = jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+    prettyPrinter.customFormat_ = function () {
+    };
+
+    diffBuilder.setRoots({foo: 'actual'}, {foo: 'expected'});
+    diffBuilder.withPath('foo', function () {
+      diffBuilder.recordMismatch();
+    });
+
+    expect(diffBuilder.getMessage()).toEqual("Expected $.foo = |actual| to equal |expected|.");
+  });
+
+  it("passes the injected pretty-printer to the diff formatter", function () {
+    var diffFormatter = jasmine.createSpy('diffFormatter'),
+      prettyPrinter = function () {
+      },
+      diffBuilder = jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+    prettyPrinter.customFormat_ = function () {
+    };
+
+    diffBuilder.setRoots({x: 'bar'}, {x: 'foo'});
+    diffBuilder.withPath('x', function () {
+      diffBuilder.recordMismatch(diffFormatter);
+    });
+
+    diffBuilder.getMessage();
+
+    expect(diffFormatter).toHaveBeenCalledWith('bar', 'foo', jasmine.anything(), prettyPrinter);
+  });
+
+  it("uses custom object formatters on leaf nodes", function() {
+    var formatter = function(x) {
+      if (typeof x === 'number') {
+        return '[number:' + x + ']';
+      }
+    };
+    prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]);
+    var diffBuilder = new jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+
+    diffBuilder.setRoots(5, 4);
+    diffBuilder.recordMismatch();
+
+    expect(diffBuilder.getMessage()).toEqual('Expected [number:5] to equal [number:4].');
+  });
+
+
+  it("uses custom object formatters on non leaf nodes", function () {
+    var formatter = function (x) {
+      if (x.hasOwnProperty('a')) {
+        return '[thing with a=' + x.a + ', b=' + JSON.stringify(x.b) + ']';
+      }
+    };
+    prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]);
+    var diffBuilder = new jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+    var expectedMsg = 'Expected $[0].foo = [thing with a=1, b={"x":42}] to equal [thing with a=1, b={"x":43}].\n' +
+      "Expected $[0].bar = 'yes' to equal 'no'.";
+
+    diffBuilder.setRoots(
+      [{foo: {a: 1, b: {x: 42}}, bar: 'yes'}],
+      [{foo: {a: 1, b: {x: 43}}, bar: 'no'}]
+    );
+
+    diffBuilder.withPath(0, function () {
+      diffBuilder.withPath('foo', function () {
+        diffBuilder.withPath('b', function () {
+          diffBuilder.withPath('x', function () {
+            diffBuilder.recordMismatch();
+          });
+        });
+      });
+
+      diffBuilder.withPath('bar', function () {
+        diffBuilder.recordMismatch();
+      });
+    });
+
+    expect(diffBuilder.getMessage()).toEqual(expectedMsg);
+  });
 });
diff --git a/spec/core/matchers/MismatchTreeSpec.js b/spec/core/matchers/MismatchTreeSpec.js
new file mode 100644
index 00000000..ea053eb7
--- /dev/null
+++ b/spec/core/matchers/MismatchTreeSpec.js
@@ -0,0 +1,136 @@
+describe('MismatchTree', function () {
+  describe('#add', function () {
+    describe('When the path is empty', function () {
+      it('flags the root node as mismatched', function () {
+        var tree = new jasmineUnderTest.MismatchTree();
+        tree.add(new jasmineUnderTest.ObjectPath([]));
+        expect(tree.isMismatch).toBe(true);
+      });
+    });
+
+    describe('When the path is not empty', function () {
+      it('flags the node as mismatched', function () {
+        var tree = new jasmineUnderTest.MismatchTree();
+
+        tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+
+        expect(tree.child('a').child('b').isMismatch).toBe(true);
+      });
+
+      it('does not flag ancestors as mismatched', function () {
+        var tree = new jasmineUnderTest.MismatchTree();
+
+        tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+
+        expect(tree.isMismatch).toBe(false);
+        expect(tree.child('a').isMismatch).toBe(false);
+      });
+    });
+
+    it('stores the formatter on only the target node', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']), formatter);
+
+      expect(tree.formatter).toBeFalsy();
+      expect(tree.child('a').formatter).toBeFalsy();
+      expect(tree.child('a').child('b').formatter).toBe(formatter);
+    });
+
+    it('stores the path to the node', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']), formatter);
+
+      expect(tree.child('a').child('b').path.components).toEqual(['a', 'b']);
+    });
+  });
+
+  describe('#traverse', function () {
+    it('calls the callback for all nodes that are or contain mismatches', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']), formatter);
+      tree.add(new jasmineUnderTest.ObjectPath(['c']));
+      var visit = jasmine.createSpy('visit').and.returnValue(true);
+
+      tree.traverse(visit);
+
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath([]), false, undefined
+      );
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath(['a']), false, undefined
+      );
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath(['a', 'b']), true, formatter
+      );
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath(['c']), true, undefined
+      );
+    });
+
+    it('does not call the callback if there are no mismatches', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+      var visit = jasmine.createSpy('visit');
+
+      tree.traverse(visit);
+
+      expect(visit).not.toHaveBeenCalled();
+    });
+
+    it('visits parents before children', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+      var visited = [];
+
+      tree.traverse(function (path) {
+        visited.push(path);
+        return true;
+      });
+
+      expect(visited).toEqual([
+        new jasmineUnderTest.ObjectPath([]),
+        new jasmineUnderTest.ObjectPath(['a']),
+        new jasmineUnderTest.ObjectPath(['a', 'b'])
+      ]);
+    });
+
+    it('visits children in the order they were recorded', function() {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['length']));
+      tree.add(new jasmineUnderTest.ObjectPath([1]));
+      var visited = [];
+
+      tree.traverse(function (path) {
+        visited.push(path);
+        return true;
+      });
+
+      expect(visited).toEqual([
+        new jasmineUnderTest.ObjectPath([]),
+        new jasmineUnderTest.ObjectPath(['length']),
+        new jasmineUnderTest.ObjectPath([1])
+      ]);
+    });
+
+    it('does not visit children if the callback returns falsy', function() {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+      var visited = [];
+
+      tree.traverse(function (path) {
+        visited.push(path);
+        return path.depth() === 0;
+      });
+
+      expect(visited).toEqual([
+        new jasmineUnderTest.ObjectPath([]),
+        new jasmineUnderTest.ObjectPath(['a'])
+      ]);
+    });
+  });
+
+  function formatter() {
+  }
+
+});
diff --git a/spec/core/matchers/NullDiffBuilderSpec.js b/spec/core/matchers/NullDiffBuilderSpec.js
index a9aac3db..3333776b 100644
--- a/spec/core/matchers/NullDiffBuilderSpec.js
+++ b/spec/core/matchers/NullDiffBuilderSpec.js
@@ -1,13 +1,8 @@
-describe('NullDiffBuilder', function() {
-  it('responds to withPath() by calling the passed function', function() {
+describe('NullDiffBuilder', function () {
+  it('responds to withPath() by calling the passed function', function () {
     var spy = jasmine.createSpy('callback');
     jasmineUnderTest.NullDiffBuilder().withPath('does not matter', spy);
     expect(spy).toHaveBeenCalled();
   });
 
-  it('responds to record()', function() {
-    expect(function() {
-      jasmineUnderTest.NullDiffBuilder().record('does not matter');
-    }).not.toThrow();
-  })
 });
diff --git a/spec/core/matchers/ObjectPathSpec.js b/spec/core/matchers/ObjectPathSpec.js
index 88b023d1..9750272e 100644
--- a/spec/core/matchers/ObjectPathSpec.js
+++ b/spec/core/matchers/ObjectPathSpec.js
@@ -39,5 +39,13 @@ describe('ObjectPath', function() {
 
     expect(path.toString()).toEqual('$.foo');
     expect(root.toString()).toEqual('');
-  })
+  });
+
+  describe('#dereference', function() {
+    it('returns the value corresponding to the path', function () {
+      var path = new ObjectPath().add('foo').add(1).add('bar');
+      var obj = {foo: ['', {bar: 42}]};
+      expect(path.dereference(obj)).toEqual(42);
+    });
+  });
 });
diff --git a/spec/core/matchers/async/toBeRejectedSpec.js b/spec/core/matchers/async/toBeRejectedSpec.js
index 442ddba2..61bd2a5a 100644
--- a/spec/core/matchers/async/toBeRejectedSpec.js
+++ b/spec/core/matchers/async/toBeRejectedSpec.js
@@ -2,7 +2,8 @@ describe('toBeRejected', function() {
   it('passes if the actual is rejected', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejected(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejected(matchersUtil),
       actual = Promise.reject('AsyncExpectationSpec rejection');
 
     return matcher.compare(actual).then(function(result) {
@@ -13,7 +14,8 @@ describe('toBeRejected', function() {
   it('fails if the actual is resolved', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejected(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejected(matchersUtil),
       actual = Promise.resolve();
 
     return matcher.compare(actual).then(function(result) {
@@ -22,7 +24,8 @@ describe('toBeRejected', function() {
   });
 
   it('fails if actual is not a promise', function() {
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejected(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejected(matchersUtil),
       actual = 'not a promise';
 
     function f() {
diff --git a/spec/core/matchers/async/toBeRejectedWithErrorSpec.js b/spec/core/matchers/async/toBeRejectedWithErrorSpec.js
index 3b207645..97260d59 100644
--- a/spec/core/matchers/async/toBeRejectedWithErrorSpec.js
+++ b/spec/core/matchers/async/toBeRejectedWithErrorSpec.js
@@ -2,7 +2,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when Error type matches', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new TypeError('foo'));
 
     return matcher.compare(actual, TypeError).then(function (result) {
@@ -16,7 +17,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when Error type and message matches', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new TypeError('foo'));
 
     return matcher.compare(actual, TypeError, 'foo').then(function (result) {
@@ -30,7 +32,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when Error matches and is exactly Error', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error());
 
     return matcher.compare(actual, Error).then(function (result) {
@@ -45,7 +48,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when Error message matches a string', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error('foo'));
 
     return matcher.compare(actual, 'foo').then(function (result) {
@@ -59,7 +63,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when Error message matches a RegExp', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error('foo'));
 
     return matcher.compare(actual, /foo/).then(function (result) {
@@ -73,7 +78,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when Error message is empty', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error());
 
     return matcher.compare(actual, '').then(function (result) {
@@ -87,7 +93,8 @@ describe('#toBeRejectedWithError', function () {
   it('passes when no arguments', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error());
 
     return matcher.compare(actual, void 0).then(function (result) {
@@ -101,7 +108,8 @@ describe('#toBeRejectedWithError', function () {
   it('fails when resolved', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.resolve(new Error('foo'));
 
     return matcher.compare(actual, 'foo').then(function (result) {
@@ -115,7 +123,8 @@ describe('#toBeRejectedWithError', function () {
   it('fails when rejected with non Error type', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject('foo');
 
     return matcher.compare(actual, 'foo').then(function (result) {
@@ -129,7 +138,8 @@ describe('#toBeRejectedWithError', function () {
   it('fails when Error type mismatches', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error('foo'));
 
     return matcher.compare(actual, TypeError, 'foo').then(function (result) {
@@ -143,7 +153,8 @@ describe('#toBeRejectedWithError', function () {
   it('fails when Error message mismatches', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = Promise.reject(new Error('foo'));
 
     return matcher.compare(actual, 'bar').then(function (result) {
@@ -155,7 +166,8 @@ describe('#toBeRejectedWithError', function () {
   });
 
   it('fails if actual is not a promise', function() {
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWithError(matchersUtil),
       actual = 'not a promise';
 
     function f() {
diff --git a/spec/core/matchers/async/toBeRejectedWithSpec.js b/spec/core/matchers/async/toBeRejectedWithSpec.js
index ea927c20..2c02a03a 100644
--- a/spec/core/matchers/async/toBeRejectedWithSpec.js
+++ b/spec/core/matchers/async/toBeRejectedWithSpec.js
@@ -2,7 +2,8 @@ describe('#toBeRejectedWith', function () {
   it('should return true if the promise is rejected with the expected value', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(matchersUtil),
       actual = Promise.reject({error: 'PEBCAK'});
 
     return matcher.compare(actual, {error: 'PEBCAK'}).then(function (result) {
@@ -13,7 +14,8 @@ describe('#toBeRejectedWith', function () {
   it('should fail if the promise resolves', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(matchersUtil),
       actual = Promise.resolve();
 
     return matcher.compare(actual, '').then(function (result) {
@@ -24,7 +26,8 @@ describe('#toBeRejectedWith', function () {
   it('should fail if the promise is rejected with a different value', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(matchersUtil),
       actual = Promise.reject('A Bad Apple');
 
     return matcher.compare(actual, 'Some Cool Thing').then(function (result) {
@@ -38,7 +41,8 @@ describe('#toBeRejectedWith', function () {
   it('should build its error correctly when negated', function () {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(matchersUtil),
       actual = Promise.reject(true);
 
     return matcher.compare(actual, true).then(function (result) {
@@ -53,7 +57,8 @@ describe('#toBeRejectedWith', function () {
     jasmine.getEnv().requirePromises();
 
     var customEqualityTesters = [function() { return true; }],
-      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(jasmineUnderTest.matchersUtil, customEqualityTesters),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: customEqualityTesters}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(matchersUtil),
       actual = Promise.reject('actual');
 
     return matcher.compare(actual, 'expected').then(function(result) {
@@ -62,7 +67,8 @@ describe('#toBeRejectedWith', function () {
   });
 
   it('fails if actual is not a promise', function() {
-    var matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeRejectedWith(matchersUtil),
       actual = 'not a promise';
 
     function f() {
diff --git a/spec/core/matchers/async/toBeResolvedSpec.js b/spec/core/matchers/async/toBeResolvedSpec.js
index 28297e30..a6ab25ba 100644
--- a/spec/core/matchers/async/toBeResolvedSpec.js
+++ b/spec/core/matchers/async/toBeResolvedSpec.js
@@ -2,7 +2,8 @@ describe('toBeResolved', function() {
   it('passes if the actual is resolved', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolved(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolved(matchersUtil),
       actual = Promise.resolve();
 
     return matcher.compare(actual).then(function(result) {
@@ -13,7 +14,8 @@ describe('toBeResolved', function() {
   it('fails if the actual is rejected', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolved(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolved(matchersUtil),
       actual = Promise.reject('AsyncExpectationSpec rejection');
 
     return matcher.compare(actual).then(function(result) {
@@ -22,7 +24,8 @@ describe('toBeResolved', function() {
   });
 
   it('fails if actual is not a promise', function() {
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolved(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolved(matchersUtil),
       actual = 'not a promise';
 
     function f() {
diff --git a/spec/core/matchers/async/toBeResolvedToSpec.js b/spec/core/matchers/async/toBeResolvedToSpec.js
index dc330920..c68eb0e0 100644
--- a/spec/core/matchers/async/toBeResolvedToSpec.js
+++ b/spec/core/matchers/async/toBeResolvedToSpec.js
@@ -2,7 +2,8 @@ describe('#toBeResolvedTo', function() {
   it('passes if the promise is resolved to the expected value', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(matchersUtil),
       actual = Promise.resolve({foo: 42});
 
     return matcher.compare(actual, {foo: 42}).then(function(result) {
@@ -13,7 +14,8 @@ describe('#toBeResolvedTo', function() {
   it('fails if the promise is rejected', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(matchersUtil),
       actual = Promise.reject('AsyncExpectationSpec error');
 
     return matcher.compare(actual, '').then(function(result) {
@@ -27,7 +29,8 @@ describe('#toBeResolvedTo', function() {
   it('fails if the promise is resolved to a different value', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(matchersUtil),
       actual = Promise.resolve({foo: 17});
 
     return matcher.compare(actual, {foo: 42}).then(function(result) {
@@ -41,7 +44,8 @@ describe('#toBeResolvedTo', function() {
   it('builds its message correctly when negated', function() {
     jasmine.getEnv().requirePromises();
 
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: new jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(matchersUtil),
       actual = Promise.resolve(true);
 
     return matcher.compare(actual, true).then(function(result) {
@@ -56,7 +60,11 @@ describe('#toBeResolvedTo', function() {
     jasmine.getEnv().requirePromises();
 
     var customEqualityTesters = [function() { return true; }],
-      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(jasmineUnderTest.matchersUtil, customEqualityTesters),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({
+        customTesters: customEqualityTesters,
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(matchersUtil),
       actual = Promise.resolve('actual');
 
     return matcher.compare(actual, 'expected').then(function(result) {
@@ -65,7 +73,8 @@ describe('#toBeResolvedTo', function() {
   });
 
   it('fails if actual is not a promise', function() {
-    var matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.asyncMatchers.toBeResolvedTo(matchersUtil),
       actual = 'not a promise';
 
     function f() {
diff --git a/spec/core/matchers/matchersUtilSpec.js b/spec/core/matchers/matchersUtilSpec.js
index 038d101a..4894fefa 100644
--- a/spec/core/matchers/matchersUtilSpec.js
+++ b/spec/core/matchers/matchersUtilSpec.js
@@ -1,4 +1,11 @@
 describe("matchersUtil", function() {
+  it("exposes the injected pretty-printer as .pp", function() {
+    var pp = function() {},
+      matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp});
+
+    expect(matchersUtil.pp).toBe(pp);
+  });
+
   describe("equals", function() {
     describe('Properties', function() {
       var fc;
@@ -72,178 +79,210 @@ describe("matchersUtil", function() {
     });
 
     it("passes for literals that are triple-equal", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(null, null)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(void 0, void 0)).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(null, null)).toBe(true);
+      expect(matchersUtil.equals(void 0, void 0)).toBe(true);
     });
 
     it("fails for things that are not equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals({a: "foo"}, 1)).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals({a: "foo"}, 1)).toBe(false);
     });
 
     it("passes for Strings that are equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals("foo", "foo")).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals("foo", "foo")).toBe(true);
     });
 
     it("fails for Strings that are not equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals("foo", "bar")).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals("foo", "bar")).toBe(false);
     });
 
     it("passes for Numbers that are equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(123, 123)).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(123, 123)).toBe(true);
     });
 
     it("fails for Numbers that are not equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(123, 456)).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(123, 456)).toBe(false);
     });
 
     it("passes for Dates that are equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(new Date("Jan 1, 1970"), new Date("Jan 1, 1970"))).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(new Date("Jan 1, 1970"), new Date("Jan 1, 1970"))).toBe(true);
     });
 
     it("fails for Dates that are not equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(new Date("Jan 1, 1970"), new Date("Feb 3, 1991"))).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(new Date("Jan 1, 1970"), new Date("Feb 3, 1991"))).toBe(false);
     });
 
     it("passes for Booleans that are equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(true, true)).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(true, true)).toBe(true);
     });
 
     it("fails for Booleans that are not equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(true, false)).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(true, false)).toBe(false);
     });
 
     it("passes for RegExps that are equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(/foo/, /foo/)).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(/foo/, /foo/)).toBe(true);
     });
 
     it("fails for RegExps that are not equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(/foo/, /bar/)).toBe(false);
-      expect(jasmineUnderTest.matchersUtil.equals(new RegExp("foo", "i"), new RegExp("foo"))).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(/foo/, /bar/)).toBe(false);
+      expect(matchersUtil.equals(new RegExp("foo", "i"), new RegExp("foo"))).toBe(false);
     });
 
     it("passes for Arrays that are equivalent", function() {
-      expect(jasmineUnderTest.matchersUtil.equals([1, 2], [1, 2])).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals([1, 2], [1, 2])).toBe(true);
     });
 
     it("passes for Arrays that are equivalent, with elements added by changing length", function() {
-      var foo = [];
+      var foo = [],
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
       foo.length = 1;
 
-      expect(jasmineUnderTest.matchersUtil.equals(foo, [undefined])).toBe(true);
+      expect(matchersUtil.equals(foo, [undefined])).toBe(true);
     });
 
     it("fails for Arrays that have different lengths", function() {
-      expect(jasmineUnderTest.matchersUtil.equals([1, 2], [1, 2, 3])).toBe(false);
+      matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals([1, 2], [1, 2, 3])).toBe(false);
     });
 
     it("fails for Arrays that have different elements", function() {
-      expect(jasmineUnderTest.matchersUtil.equals([1, 2, 3], [1, 5, 3])).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals([1, 2, 3], [1, 5, 3])).toBe(false);
     });
 
     it("fails for Arrays whose contents are equivalent, but have differing properties", function() {
       var one = [1,2,3],
-        two = [1,2,3];
+        two = [1,2,3],
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       one.foo = 'bar';
       two.foo = 'baz';
 
-      expect(jasmineUnderTest.matchersUtil.equals(one, two)).toBe(false);
+      expect(matchersUtil.equals(one, two)).toBe(false);
     });
 
     it("passes for Arrays with equivalent contents and properties", function() {
       var one = [1,2,3],
-        two = [1,2,3];
+        two = [1,2,3],
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       one.foo = 'bar';
       two.foo = 'bar';
 
-      expect(jasmineUnderTest.matchersUtil.equals(one, two)).toBe(true);
+      expect(matchersUtil.equals(one, two)).toBe(true);
     });
 
     it("passes for Errors that are the same type and have the same message", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(new Error("foo"), new Error("foo"))).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(new Error("foo"), new Error("foo"))).toBe(true);
     });
 
     it("fails for Errors that are the same type and have different messages", function() {
-      expect(jasmineUnderTest.matchersUtil.equals(new Error("foo"), new Error("bar"))).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(new Error("foo"), new Error("bar"))).toBe(false);
     });
 
     it("fails for objects with different constructors", function() {
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       function One() {}
       function Two() {}
 
-      expect(jasmineUnderTest.matchersUtil.equals(new One(), new Two())).toBe(false);
+      expect(matchersUtil.equals(new One(), new Two())).toBe(false);
     });
 
     it("passes for Objects that are equivalent (simple case)", function() {
-      expect(jasmineUnderTest.matchersUtil.equals({a: "foo"}, {a: "foo"})).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals({a: "foo"}, {a: "foo"})).toBe(true);
     });
 
     it("fails for Objects that are not equivalent (simple case)", function() {
-      expect(jasmineUnderTest.matchersUtil.equals({a: "foo"}, {a: "bar"})).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals({a: "foo"}, {a: "bar"})).toBe(false);
     });
 
     it("passes for Objects that are equivalent (deep case)", function() {
-      expect(jasmineUnderTest.matchersUtil.equals({a: "foo", b: { c: "bar"}}, {a: "foo", b: { c: "bar"}})).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals({a: "foo", b: { c: "bar"}}, {a: "foo", b: { c: "bar"}})).toBe(true);
     });
 
     it("fails for Objects that are not equivalent (deep case)", function() {
-      expect(jasmineUnderTest.matchersUtil.equals({a: "foo", b: { c: "baz"}}, {a: "foo", b: { c: "bar"}})).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals({a: "foo", b: { c: "baz"}}, {a: "foo", b: { c: "bar"}})).toBe(false);
     });
 
     it("passes for Objects that are equivalent (with cycles)", function() {
       var actual = { a: "foo" },
-      expected = { a: "foo" };
+        expected = { a: "foo" },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       actual.b = actual;
       expected.b = actual;
 
-      expect(jasmineUnderTest.matchersUtil.equals(actual, expected)).toBe(true);
+      expect(matchersUtil.equals(actual, expected)).toBe(true);
     });
 
     it("fails for Objects that are not equivalent (with cycles)", function() {
       var actual = { a: "foo" },
-        expected = { a: "bar" };
+        expected = { a: "bar" },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       actual.b = actual;
       expected.b = actual;
 
-      expect(jasmineUnderTest.matchersUtil.equals(actual, expected)).toBe(false);
+      expect(matchersUtil.equals(actual, expected)).toBe(false);
     });
 
     it("fails for Objects that have the same number of keys, but different keys/values", function () {
       var expected = { a: undefined },
-        actual = { b: 1 };
+        actual = { b: 1 },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(actual, expected)).toBe(false);
+      expect(matchersUtil.equals(actual, expected)).toBe(false);
     });
 
     it("fails when comparing an empty object to an empty array (issue #114)", function() {
       var emptyObject = {},
-        emptyArray = [];
+        emptyArray = [],
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(emptyObject, emptyArray)).toBe(false);
-      expect(jasmineUnderTest.matchersUtil.equals(emptyArray, emptyObject)).toBe(false);
+
+      expect(matchersUtil.equals(emptyObject, emptyArray)).toBe(false);
+      expect(matchersUtil.equals(emptyArray, emptyObject)).toBe(false);
     });
 
     it("passes for equivalent frozen objects (GitHub issue #266)", function() {
       var a = { foo: 1 },
-        b = {foo: 1 };
+        b = {foo: 1 },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       Object.freeze(a);
       Object.freeze(b);
 
-      expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(true);
+      expect(matchersUtil.equals(a,b)).toBe(true);
     });
 
     it("passes for equivalent Promises (GitHub issue #1314)", function() {
       if (typeof Promise === 'undefined') { return; }
 
       var p1 = new Promise(function () {}),
-        p2 = new Promise(function () {});
+        p2 = new Promise(function () {}),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(p1, p1)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(p1, p2)).toBe(false);
+      expect(matchersUtil.equals(p1, p1)).toBe(true);
+      expect(matchersUtil.equals(p1, p2)).toBe(false);
     });
 
     describe("when running in a browser", function() {
@@ -256,6 +295,8 @@ describe("matchersUtil", function() {
           return;
         }
         var a = document.createElement("div");
+        var matchersUtil = new jasmineUnderTest.MatchersUtil();
+
         a.setAttribute("test-attr", "attr-value");
         a.appendChild(document.createTextNode('test'));
 
@@ -263,17 +304,18 @@ describe("matchersUtil", function() {
         b.setAttribute("test-attr", "attr-value");
         b.appendChild(document.createTextNode('test'));
 
-        expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(true);
+        expect(matchersUtil.equals(a,b)).toBe(true);
       });
 
       it("passes for equivalent objects from different frames", function() {
         if (isNotRunningInBrowser()) {
           return;
         }
+        var matchersUtil = new jasmineUnderTest.MatchersUtil();
         var iframe = document.createElement('iframe');
         document.body.appendChild(iframe);
         iframe.contentWindow.eval('window.testObject = {}');
-        expect(jasmineUnderTest.matchersUtil.equals({}, iframe.contentWindow.testObject)).toBe(true);
+        expect(matchersUtil.equals({}, iframe.contentWindow.testObject)).toBe(true);
         document.body.removeChild(iframe);
       });
 
@@ -281,6 +323,7 @@ describe("matchersUtil", function() {
         if (isNotRunningInBrowser()) {
           return;
         }
+        var matchersUtil = new jasmineUnderTest.MatchersUtil();
         var a = document.createElement("div");
         a.setAttribute("test-attr", "attr-value");
         a.appendChild(document.createTextNode('test'));
@@ -289,16 +332,16 @@ describe("matchersUtil", function() {
         b.setAttribute("test-attr", "attr-value2");
         b.appendChild(document.createTextNode('test'));
 
-        expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(false);
+        expect(matchersUtil.equals(a,b)).toBe(false);
 
         b.setAttribute("test-attr", "attr-value");
-        expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(true);
+        expect(matchersUtil.equals(a,b)).toBe(true);
 
         b.appendChild(document.createTextNode('2'));
-        expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(false);
+        expect(matchersUtil.equals(a,b)).toBe(false);
 
         a.appendChild(document.createTextNode('2'));
-        expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(true);
+        expect(matchersUtil.equals(a,b)).toBe(true);
       });
     });
 
@@ -311,43 +354,47 @@ describe("matchersUtil", function() {
         if (isNotRunningInNode()) {
           return;
         }
+        var matchersUtil = new jasmineUnderTest.MatchersUtil();
         var vm = require('vm');
         var sandbox = {
           obj: null
         };
         vm.runInNewContext('obj = {a: 1, b: 2}', sandbox);
 
-        expect(jasmineUnderTest.matchersUtil.equals(sandbox.obj, {a: 1, b: 2})).toBe(true);
+        expect(matchersUtil.equals(sandbox.obj, {a: 1, b: 2})).toBe(true);
       });
 
       it("passes for equivalent arrays from different vm contexts", function() {
         if (isNotRunningInNode()) {
           return;
         }
+        var matchersUtil = new jasmineUnderTest.MatchersUtil();
         var vm = require('vm');
         var sandbox = {
           arr: null
         };
         vm.runInNewContext('arr = [1, 2]', sandbox);
 
-        expect(jasmineUnderTest.matchersUtil.equals(sandbox.arr, [1, 2])).toBe(true);
+        expect(matchersUtil.equals(sandbox.arr, [1, 2])).toBe(true);
       });
     });
 
     it("passes when Any is used", function() {
       var number = 3,
-        anyNumber = new jasmineUnderTest.Any(Number);
+        anyNumber = new jasmineUnderTest.Any(Number),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(number, anyNumber)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(anyNumber, number)).toBe(true);
+      expect(matchersUtil.equals(number, anyNumber)).toBe(true);
+      expect(matchersUtil.equals(anyNumber, number)).toBe(true);
     });
 
     it("fails when Any is compared to something unexpected", function() {
       var number = 3,
-        anyString = new jasmineUnderTest.Any(String);
+        anyString = new jasmineUnderTest.Any(String),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(number, anyString)).toBe(false);
-      expect(jasmineUnderTest.matchersUtil.equals(anyString, number)).toBe(false);
+      expect(matchersUtil.equals(number, anyString)).toBe(false);
+      expect(matchersUtil.equals(anyString, number)).toBe(false);
     });
 
     it("passes when ObjectContaining is used", function() {
@@ -355,135 +402,209 @@ describe("matchersUtil", function() {
         foo: 3,
         bar: 7
       },
-      containing = new jasmineUnderTest.ObjectContaining({foo: 3});
+        containing = new jasmineUnderTest.ObjectContaining({foo: 3}),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(obj, containing)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(containing, obj)).toBe(true);
+      expect(matchersUtil.equals(obj, containing)).toBe(true);
+      expect(matchersUtil.equals(containing, obj)).toBe(true);
     });
 
     it("passes when MapContaining is used", function() {
       jasmine.getEnv().requireFunctioningMaps();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var obj = new Map();
       obj.set(1, 2);
       obj.set('foo', 'bar');
       var containing = new jasmineUnderTest.MapContaining(new Map());
       containing.sample.set('foo', 'bar');
 
-      expect(jasmineUnderTest.matchersUtil.equals(obj, containing)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(containing, obj)).toBe(true);
+      expect(matchersUtil.equals(obj, containing)).toBe(true);
+      expect(matchersUtil.equals(containing, obj)).toBe(true);
     });
 
     it("passes when SetContaining is used", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var obj = new Set();
       obj.add(1);
       obj.add('foo');
       var containing = new jasmineUnderTest.SetContaining(new Set());
       containing.sample.add(1);
 
-      expect(jasmineUnderTest.matchersUtil.equals(obj, containing)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(containing, obj)).toBe(true);
+      expect(matchersUtil.equals(obj, containing)).toBe(true);
+      expect(matchersUtil.equals(containing, obj)).toBe(true);
     });
 
     it("passes when an asymmetric equality tester returns true", function() {
-      var tester = { asymmetricMatch: function(other) { return true; } };
+      var tester = { asymmetricMatch: function(other) { return true; } },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(false, tester)).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(tester, false)).toBe(true);
+      expect(matchersUtil.equals(false, tester)).toBe(true);
+      expect(matchersUtil.equals(tester, false)).toBe(true);
     });
 
     it("fails when an asymmetric equality tester returns false", function() {
-      var tester = { asymmetricMatch: function(other) { return false; } };
+      var tester = { asymmetricMatch: function(other) { return false; } },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(true, tester)).toBe(false);
-      expect(jasmineUnderTest.matchersUtil.equals(tester, true)).toBe(false);
+      expect(matchersUtil.equals(true, tester)).toBe(false);
+      expect(matchersUtil.equals(tester, true)).toBe(false);
     });
 
     it("passes when ArrayContaining is used", function() {
-      var arr = ["foo", "bar"];
+      var arr = ["foo", "bar"],
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(arr, new jasmineUnderTest.ArrayContaining(["bar"]))).toBe(true);
+      expect(matchersUtil.equals(arr, new jasmineUnderTest.ArrayContaining(["bar"]))).toBe(true);
     });
 
-    it("passes when a custom equality matcher returns true", function() {
-      var tester = function(a, b) { return true; };
+    it("passes when a custom equality matcher passed to equals returns true", function() {
+      // TODO: remove this in the next major release.
+      var tester = function(a, b) { return true; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(1, 2, [tester])).toBe(true);
+      expect(matchersUtil.equals(1, 2, [tester])).toBe(true);
+    });
+
+    it("passes when a custom equality matcher passed to the constructor returns true", function() {
+      var tester = function(a, b) { return true; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester], pp: function() {}});
+
+      expect(matchersUtil.equals(1, 2)).toBe(true);
     });
 
     it("passes for two empty Objects", function () {
-      expect(jasmineUnderTest.matchersUtil.equals({}, {})).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals({}, {})).toBe(true);
     });
 
-    describe("when a custom equality matcher is installed that returns 'undefined'", function () {
+    describe("when a custom equality matcher is passed to equals that returns 'undefined'", function () {
+      // TODO: remove this in the next major release.
       var tester = function(a, b) { return jasmine.undefined; };
 
       it("passes for two empty Objects", function () {
-        expect(jasmineUnderTest.matchersUtil.equals({}, {}, [tester])).toBe(true);
+        var matchersUtil = new jasmineUnderTest.MatchersUtil();
+        expect(matchersUtil.equals({}, {}, [tester])).toBe(true);
       });
     });
 
-    it("fails for equivalents when a custom equality matcher returns false", function() {
-      var tester = function(a, b) { return false; };
+    describe("when a custom equality matcher is passed to the constructor that returns 'undefined'", function () {
+      var tester = function(a, b) { return jasmine.undefined; };
 
-      expect(jasmineUnderTest.matchersUtil.equals(1, 1, [tester])).toBe(false);
+      it("passes for two empty Objects", function () {
+        var matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester], pp: function() {}});
+        expect(matchersUtil.equals({}, {})).toBe(true);
+      });
     });
 
-    it("passes for an asymmetric equality tester that returns true when a custom equality tester return false", function() {
+    it("fails for equivalents when a custom equality matcher passed to equals returns false", function() {
+      // TODO: remove this in the next major release.
+      var tester = function(a, b) { return false; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
+
+      expect(matchersUtil.equals(1, 1, [tester])).toBe(false);
+    });
+
+    it("fails for equivalents when a custom equality matcher passed to the constructor returns false", function() {
+      var tester = function(a, b) { return false; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester], pp: function() {}});
+
+      expect(matchersUtil.equals(1, 1)).toBe(false);
+    });
+
+    it("passes for an asymmetric equality tester that returns true when a custom equality tester passed to equals return false", function() {
+      // TODO: remove this in the next major release.
       var asymmetricTester = { asymmetricMatch: function(other) { return true; } },
-        symmetricTester = function(a, b) { return false; };
+        symmetricTester = function(a, b) { return false; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(asymmetricTester, true, [symmetricTester])).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.equals(true, asymmetricTester, [symmetricTester])).toBe(true);
+      expect(matchersUtil.equals(asymmetricTester, true, [symmetricTester])).toBe(true);
+      expect(matchersUtil.equals(true, asymmetricTester, [symmetricTester])).toBe(true);
     });
 
-    it("passes custom equality matchers to asymmetric equality testers", function() {
-      var tester = function(a, b) {};
-      var asymmetricTester = { asymmetricMatch: jasmine.createSpy('asymmetricMatch') };
-      asymmetricTester.asymmetricMatch.and.returnValue(true);
-      var other = {};
+    it("passes for an asymmetric equality tester that returns true when a custom equality tester passed to the constructor return false", function() {
+      var asymmetricTester = { asymmetricMatch: function(other) { return true; } },
+        symmetricTester = function(a, b) { return false; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [symmetricTester()], pp: function() {}});
 
-      expect(jasmineUnderTest.matchersUtil.equals(asymmetricTester, other, [tester])).toBe(true);
-      expect(asymmetricTester.asymmetricMatch).toHaveBeenCalledWith(other, [tester]);
+      expect(matchersUtil.equals(asymmetricTester, true)).toBe(true);
+      expect(matchersUtil.equals(true, asymmetricTester)).toBe(true);
+    });
+
+    describe("The compatibility shim passed to asymmetric equality testers", function() {
+      describe("When equals is called with custom equality testers", function() {
+        it("is both a matchersUtil and the custom equality testers passed to equals", function() {
+          var asymmetricTester = jasmine.createSpyObj('tester', ['asymmetricMatch']),
+            symmetricTester = function() { } ,
+            matchersUtil = new jasmineUnderTest.MatchersUtil(),
+            shim;
+
+          matchersUtil.equals(true, asymmetricTester, [symmetricTester]);
+          shim = asymmetricTester.asymmetricMatch.calls.argsFor(0)[1];
+          expect(shim).toEqual(jasmine.any(jasmineUnderTest.MatchersUtil));
+          expect(shim.length).toEqual(1);
+          expect(shim[0]).toEqual(symmetricTester);
+        });
+      });
+
+      describe("When equals is called with custom equality testers", function() {
+        it("is both a matchersUtil and the custom equality testers passed to the constructor", function() {
+          var asymmetricTester = jasmine.createSpyObj('tester', ['asymmetricMatch']),
+            symmetricTester = function() { } ,
+            matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [symmetricTester], pp: function() {}}),
+            shim;
+
+          matchersUtil.equals(true, asymmetricTester);
+          shim = asymmetricTester.asymmetricMatch.calls.argsFor(0)[1];
+          expect(shim).toEqual(jasmine.any(jasmineUnderTest.MatchersUtil));
+          expect(shim.length).toEqual(1);
+          expect(shim[0]).toEqual(symmetricTester);
+        });
+      });
     });
 
     it("passes when an Any is compared to an Any that checks for the same type", function() {
       var any1 = new jasmineUnderTest.Any(Function),
-        any2 = new jasmineUnderTest.Any(Function);
+        any2 = new jasmineUnderTest.Any(Function),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.equals(any1, any2)).toBe(true);
+      expect(matchersUtil.equals(any1, any2)).toBe(true);
     });
 
     it("passes for null prototype objects with same properties", function () {
       var objA = Object.create(null),
-        objB = Object.create(null);
+        objB = Object.create(null),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       objA.name = 'test';
       objB.name = 'test';
 
-      expect(jasmineUnderTest.matchersUtil.equals(objA, objB)).toBe(true);
+      expect(matchersUtil.equals(objA, objB)).toBe(true);
     });
 
     it("fails for null prototype objects with different properties", function () {
       var objA = Object.create(null),
-        objB = Object.create(null);
+        objB = Object.create(null),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
       objA.name = 'test';
       objB.test = 'name';
 
-      expect(jasmineUnderTest.matchersUtil.equals(objA, objB)).toBe(false);
+      expect(matchersUtil.equals(objA, objB)).toBe(false);
     });
 
     it("passes when comparing two empty sets", function() {
       jasmine.getEnv().requireFunctioningSets();
-      expect(jasmineUnderTest.matchersUtil.equals(new Set(), new Set())).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(new Set(), new Set())).toBe(true);
     });
 
     it("passes when comparing identical sets", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setA = new Set();
       setA.add(6);
       setA.add(5);
@@ -491,12 +612,13 @@ describe("matchersUtil", function() {
       setB.add(6);
       setB.add(5);
 
-      expect(jasmineUnderTest.matchersUtil.equals(setA, setB)).toBe(true);
+      expect(matchersUtil.equals(setA, setB)).toBe(true);
     });
 
     it("passes when comparing identical sets with different insertion order and simple elements", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setA = new Set();
       setA.add(3);
       setA.add(6);
@@ -504,12 +626,13 @@ describe("matchersUtil", function() {
       setB.add(6);
       setB.add(3);
 
-      expect(jasmineUnderTest.matchersUtil.equals(setA, setB)).toBe(true);
+      expect(matchersUtil.equals(setA, setB)).toBe(true);
     });
 
     it("passes when comparing identical sets with different insertion order and complex elements 1", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setA1 = new Set();
       setA1.add(['a',3]);
       setA1.add([6,1]);
@@ -531,12 +654,13 @@ describe("matchersUtil", function() {
       setB.add(setB1);
       setB.add(setB2);
 
-      expect(jasmineUnderTest.matchersUtil.equals(setA, setB)).toBe(true);
+      expect(matchersUtil.equals(setA, setB)).toBe(true);
     });
 
     it("passes when comparing identical sets with different insertion order and complex elements 2", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setA = new Set();
       setA.add([[1,2], [3,4]]);
       setA.add([[5,6], [7,8]]);
@@ -544,11 +668,12 @@ describe("matchersUtil", function() {
       setB.add([[5,6], [7,8]]);
       setB.add([[1,2], [3,4]]);
 
-      expect(jasmineUnderTest.matchersUtil.equals(setA, setB)).toBe(true);
+      expect(matchersUtil.equals(setA, setB)).toBe(true);
     });
 
     it("fails for sets with different elements", function() {
       jasmine.getEnv().requireFunctioningSets();
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setA = new Set();
       setA.add(6);
       setA.add(3);
@@ -558,11 +683,12 @@ describe("matchersUtil", function() {
       setB.add(4);
       setB.add(5);
 
-      expect(jasmineUnderTest.matchersUtil.equals(setA, setB)).toBe(false);
+      expect(matchersUtil.equals(setA, setB)).toBe(false);
     });
 
     it("fails for sets of different size", function() {
       jasmine.getEnv().requireFunctioningSets();
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setA = new Set();
       setA.add(6);
       setA.add(3);
@@ -571,36 +697,40 @@ describe("matchersUtil", function() {
       setB.add(4);
       setB.add(5);
 
-      expect(jasmineUnderTest.matchersUtil.equals(setA, setB)).toBe(false);
+      expect(matchersUtil.equals(setA, setB)).toBe(false);
     });
 
     it("passes when comparing two empty maps", function() {
       jasmine.getEnv().requireFunctioningMaps();
-      expect(jasmineUnderTest.matchersUtil.equals(new Map(), new Map())).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.equals(new Map(), new Map())).toBe(true);
     });
 
     it("passes when comparing identical maps", function() {
       jasmine.getEnv().requireFunctioningMaps();
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var mapA = new Map();
       mapA.set(6, 5);
       var mapB = new Map();
       mapB.set(6, 5);
-      expect(jasmineUnderTest.matchersUtil.equals(mapA, mapB)).toBe(true);
+      expect(matchersUtil.equals(mapA, mapB)).toBe(true);
     });
 
     it("passes when comparing identical maps with different insertion order", function() {
       jasmine.getEnv().requireFunctioningMaps();
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var mapA = new Map();
       mapA.set("a", 3);
       mapA.set(6, 1);
       var mapB = new Map();
       mapB.set(6, 1);
       mapB.set("a", 3);
-      expect(jasmineUnderTest.matchersUtil.equals(mapA, mapB)).toBe(true);
+      expect(matchersUtil.equals(mapA, mapB)).toBe(true);
     });
 
     it("fails for maps with different elements", function() {
       jasmine.getEnv().requireFunctioningMaps();
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var mapA = new Map();
       mapA.set(6, 3);
       mapA.set(5, 1);
@@ -608,17 +738,18 @@ describe("matchersUtil", function() {
       mapB.set(6, 4);
       mapB.set(5, 1);
 
-      expect(jasmineUnderTest.matchersUtil.equals(mapA, mapB)).toBe(false);
+      expect(matchersUtil.equals(mapA, mapB)).toBe(false);
     });
 
     it("fails for maps of different size", function() {
       jasmine.getEnv().requireFunctioningMaps();
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var mapA = new Map();
       mapA.set(6, 3);
       var mapB = new Map();
       mapB.set(6, 4);
       mapB.set(5, 1);
-      expect(jasmineUnderTest.matchersUtil.equals(mapA, mapB)).toBe(false);
+      expect(matchersUtil.equals(mapA, mapB)).toBe(false);
     });
 
     describe("when running in an environment with array polyfills", function() {
@@ -673,105 +804,160 @@ describe("matchersUtil", function() {
               return {
                 self: 'asymmetric tester value',
                 other: 'other value'
-              }
+              };
             }
           },
-          diffBuilder = jasmine.createSpyObj('diffBuilder', ['record', 'withPath']);
-        diffBuilder.withPath.and.callFake(function(p, block) { block() });
-        jasmineUnderTest.matchersUtil.equals({x: 42}, {x: tester}, [], diffBuilder);
+          actual = {x: 42},
+          expected = {x: tester},
+          diffBuilder = jasmine.createSpyObj('diffBuilder', ['recordMismatch', 'withPath', 'setRoots']);
 
+        diffBuilder.withPath.and.callFake(function(p, block) { block(); });
+        jasmineUnderTest.matchersUtil.equals(actual, expected, [], diffBuilder);
+
+        expect(diffBuilder.setRoots).toHaveBeenCalledWith(actual, expected);
         expect(diffBuilder.withPath).toHaveBeenCalledWith('x', jasmine.any(Function));
-        expect(diffBuilder.record). toHaveBeenCalledWith(
-          'other value', 'asymmetric tester value'
-        );
+        expect(diffBuilder.recordMismatch). toHaveBeenCalledWith();
       });
 
       it("records both objects when the tester does not implement valuesForDiff", function() {
         var tester = {
             asymmetricMatch: function() { return false; },
           },
-          diffBuilder = jasmine.createSpyObj('diffBuilder', ['record', 'withPath']);
-        diffBuilder.withPath.and.callFake(function(p, block) { block() });
-        jasmineUnderTest.matchersUtil.equals({x: 42}, {x: tester}, [], diffBuilder);
+          actual = {x: 42},
+          expected = {x: tester},
+          diffBuilder = jasmine.createSpyObj('diffBuilder', ['recordMismatch', 'withPath', 'setRoots']);
+        diffBuilder.withPath.and.callFake(function(p, block) { block(); });
+        jasmineUnderTest.matchersUtil.equals(actual, expected, [], diffBuilder);
 
+        expect(diffBuilder.setRoots).toHaveBeenCalledWith(actual, expected);
         expect(diffBuilder.withPath).toHaveBeenCalledWith('x', jasmine.any(Function));
-        expect(diffBuilder.record). toHaveBeenCalledWith(42, tester);
+        expect(diffBuilder.recordMismatch). toHaveBeenCalledWith();
       });
     });
+
+    it('uses a diffBuilder if one is provided as the fourth argument', function() {
+      // TODO: remove this in the next major release.
+      var diffBuilder = new jasmineUnderTest.DiffBuilder(),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
+
+      spyOn(diffBuilder, 'recordMismatch');
+      spyOn(diffBuilder, 'withPath').and.callThrough();
+
+      matchersUtil.equals([1], [2], [], diffBuilder);
+      expect(diffBuilder.withPath).toHaveBeenCalledWith('length', jasmine.any(Function));
+      expect(diffBuilder.withPath).toHaveBeenCalledWith(0, jasmine.any(Function));
+      expect(diffBuilder.recordMismatch).toHaveBeenCalledWith();
+    });
+
+    it('uses a diffBuilder if one is provided as the third argument', function() {
+      var diffBuilder = new jasmineUnderTest.DiffBuilder(),
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
+
+      spyOn(diffBuilder, 'recordMismatch');
+      spyOn(diffBuilder, 'withPath').and.callThrough();
+
+      matchersUtil.equals([1], [2], diffBuilder);
+      expect(diffBuilder.withPath).toHaveBeenCalledWith('length', jasmine.any(Function));
+      expect(diffBuilder.withPath).toHaveBeenCalledWith(0, jasmine.any(Function));
+      expect(diffBuilder.recordMismatch).toHaveBeenCalled();
+    });
   });
 
   describe("contains", function() {
     it("passes when expected is a substring of actual", function() {
-      expect(jasmineUnderTest.matchersUtil.contains("ABC", "BC")).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains("ABC", "BC")).toBe(true);
     });
 
     it("fails when expected is a not substring of actual", function() {
-      expect(jasmineUnderTest.matchersUtil.contains("ABC", "X")).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains("ABC", "X")).toBe(false);
     });
 
     it("passes when expected is an element in an actual array", function() {
-      expect(jasmineUnderTest.matchersUtil.contains(['foo', 'bar'], 'foo')).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains(['foo', 'bar'], 'foo')).toBe(true);
     });
 
     it("fails when expected is not an element in an actual array", function() {
-      expect(jasmineUnderTest.matchersUtil.contains(['foo', 'bar'], 'baz')).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains(['foo', 'bar'], 'baz')).toBe(false);
     });
 
     it("passes with mixed-element arrays", function() {
-      expect(jasmineUnderTest.matchersUtil.contains(["foo", {some: "bar"}], "foo")).toBe(true);
-      expect(jasmineUnderTest.matchersUtil.contains(["foo", {some: "bar"}], {some: "bar"})).toBe(true);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains(["foo", {some: "bar"}], "foo")).toBe(true);
+      expect(matchersUtil.contains(["foo", {some: "bar"}], {some: "bar"})).toBe(true);
     });
 
-    it("uses custom equality testers if passed in and actual is an Array", function() {
-      var customTester = function(a, b) {return true;};
+    it("uses custom equality testers if passed to contains and actual is an Array", function() {
+      // TODO: remove this in the next major release.
+      var customTester = function(a, b) {return true;},
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      expect(jasmineUnderTest.matchersUtil.contains([1, 2], 3, [customTester])).toBe(true);
+        expect(matchersUtil.contains([1, 2], 3, [customTester])).toBe(true);
+    });
+
+    it("uses custom equality testers if passed to the constructor and actual is an Array", function() {
+      var customTester = function(a, b) {return true;},
+        matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [customTester], pp: function() {}});
+
+      expect(matchersUtil.contains([1, 2], 3)).toBe(true);
     });
 
     it("fails when actual is undefined", function() {
-      expect(jasmineUnderTest.matchersUtil.contains(undefined, 'A')).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains(undefined, 'A')).toBe(false);
     });
 
     it("fails when actual is null", function() {
-      expect(jasmineUnderTest.matchersUtil.contains(null, 'A')).toBe(false);
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
+      expect(matchersUtil.contains(null, 'A')).toBe(false);
     });
 
     it("passes with array-like objects", function() {
-      var capturedArgs = null;
+      var capturedArgs = null,
+        matchersUtil = new jasmineUnderTest.MatchersUtil();
+
       function testFunction(){
         capturedArgs = arguments;
       }
+
       testFunction('foo', 'bar');
-      expect(jasmineUnderTest.matchersUtil.contains(capturedArgs, 'bar')).toBe(true);
+      expect(matchersUtil.contains(capturedArgs, 'bar')).toBe(true);
     });
 
     it("passes for set members", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var setItem = {'foo': 'bar'};
       var set = new Set();
       set.add(setItem);
 
-      expect(jasmineUnderTest.matchersUtil.contains(set, setItem)).toBe(true);
+      expect(matchersUtil.contains(set, setItem)).toBe(true);
     });
 
     // documenting current behavior
     it("fails (!) for objects that equal to a set member", function() {
       jasmine.getEnv().requireFunctioningSets();
 
+      var matchersUtil = new jasmineUnderTest.MatchersUtil();
       var set = new Set();
       set.add({'foo': 'bar'});
 
-      expect(jasmineUnderTest.matchersUtil.contains(set, {'foo': 'bar'})).toBe(false);
+      expect(matchersUtil.contains(set, {'foo': 'bar'})).toBe(false);
     });
   });
 
-  describe("buildMessage", function() {
+  describe("buildFailureMessage", function() {
 
     it("builds an English sentence for a failure case", function() {
       var actual = "foo",
         name = "toBar",
-        message = jasmineUnderTest.matchersUtil.buildFailureMessage(name, false, actual);
+        pp = jasmineUnderTest.makePrettyPrinter(),
+        matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+        message = matchersUtil.buildFailureMessage(name, false, actual);
 
       expect(message).toEqual("Expected 'foo' to bar.");
     });
@@ -780,7 +966,9 @@ describe("matchersUtil", function() {
       var actual = "foo",
         name = "toBar",
         isNot = true,
-        message = message = jasmineUnderTest.matchersUtil.buildFailureMessage(name, isNot, actual);
+        pp = jasmineUnderTest.makePrettyPrinter(),
+        matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+        message = message = matchersUtil.buildFailureMessage(name, isNot, actual);
 
       expect(message).toEqual("Expected 'foo' not to bar.");
     });
@@ -788,9 +976,24 @@ describe("matchersUtil", function() {
     it("builds an English sentence for an arbitrary array of expected arguments", function() {
       var actual = "foo",
         name = "toBar",
-        message = jasmineUnderTest.matchersUtil.buildFailureMessage(name, false, actual, "quux", "corge");
+        pp = jasmineUnderTest.makePrettyPrinter(),
+        matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+        message = matchersUtil.buildFailureMessage(name, false, actual, "quux", "corge");
 
       expect(message).toEqual("Expected 'foo' to bar 'quux', 'corge'.");
     });
+
+    it("uses the injected pretty-printer to format the expecteds and actual", function() {
+      var actual = "foo",
+        expected1 = "qux",
+        expected2 = "grault",
+        name = "toBar",
+        isNot = false,
+        pp = function(value) { return '<' + value + '>'; },
+        matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+        message = message = matchersUtil.buildFailureMessage(name, isNot, actual, expected1, expected2);
+
+      expect(message).toEqual("Expected <foo> to bar <qux>, <grault>.");
+    });
   });
 });
diff --git a/spec/core/matchers/toBeInstanceOfSpec.js b/spec/core/matchers/toBeInstanceOfSpec.js
index d31845e9..d8355af7 100644
--- a/spec/core/matchers/toBeInstanceOfSpec.js
+++ b/spec/core/matchers/toBeInstanceOfSpec.js
@@ -10,7 +10,9 @@ describe('toBeInstanceOf', function() {
     });
 
     it('passes for NaN', function() {
-      var matcher = jasmineUnderTest.matchers.toBeInstanceOf();
+      var matcher = jasmineUnderTest.matchers.toBeInstanceOf({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      });
       var result = matcher.compare(NaN, Number);
       expect(result).toEqual({
         pass: true,
@@ -156,7 +158,9 @@ describe('toBeInstanceOf', function() {
     it('passes for objects with no constructor', function() {
       var object = Object.create(null);
 
-      var matcher = jasmineUnderTest.matchers.toBeInstanceOf();
+      var matcher = jasmineUnderTest.matchers.toBeInstanceOf({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      });
       var result = matcher.compare(object, Object);
       expect(result).toEqual({
         pass: true,
@@ -219,7 +223,9 @@ describe('toBeInstanceOf', function() {
   });
 
   it('raises an error if missing an expected value', function() {
-    var matcher = jasmineUnderTest.matchers.toBeInstanceOf();
+    var matcher = jasmineUnderTest.matchers.toBeInstanceOf({
+      pp: jasmineUnderTest.makePrettyPrinter()
+    });
     expect(function() {
       matcher.compare({}, undefined);
     }).toThrowError('<toBeInstanceOf> : Expected value is not a constructor function\n' +
diff --git a/spec/core/matchers/toBeNaNSpec.js b/spec/core/matchers/toBeNaNSpec.js
index b490d089..e859f64f 100644
--- a/spec/core/matchers/toBeNaNSpec.js
+++ b/spec/core/matchers/toBeNaNSpec.js
@@ -29,7 +29,9 @@ describe("toBeNaN", function() {
   });
 
   it("has a custom message on failure", function() {
-    var matcher = jasmineUnderTest.matchers.toBeNaN(),
+    var matcher = jasmineUnderTest.matchers.toBeNaN({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       result = matcher.compare(0);
 
     expect(result.message()).toEqual("Expected 0 to be NaN.");
diff --git a/spec/core/matchers/toBeNegativeInfinitySpec.js b/spec/core/matchers/toBeNegativeInfinitySpec.js
index 4aca8978..876bf209 100644
--- a/spec/core/matchers/toBeNegativeInfinitySpec.js
+++ b/spec/core/matchers/toBeNegativeInfinitySpec.js
@@ -14,7 +14,9 @@ describe("toBeNegativeInfinity", function() {
   });
 
   it("has a custom message on failure", function() {
-    var matcher = jasmineUnderTest.matchers.toBeNegativeInfinity(),
+    var matcher = jasmineUnderTest.matchers.toBeNegativeInfinity({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       result = matcher.compare(0);
 
     expect(result.message()).toEqual("Expected 0 to be -Infinity.")
diff --git a/spec/core/matchers/toBePositiveInfinitySpec.js b/spec/core/matchers/toBePositiveInfinitySpec.js
index 239833d9..6fc91b65 100644
--- a/spec/core/matchers/toBePositiveInfinitySpec.js
+++ b/spec/core/matchers/toBePositiveInfinitySpec.js
@@ -14,7 +14,9 @@ describe("toBePositiveInfinity", function() {
   });
 
   it("has a custom message on failure", function() {
-    var matcher = jasmineUnderTest.matchers.toBePositiveInfinity(),
+    var matcher = jasmineUnderTest.matchers.toBePositiveInfinity({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       result = matcher.compare(0);
 
     expect(result.message()).toEqual("Expected 0 to be Infinity.")
diff --git a/spec/core/matchers/toBeSpec.js b/spec/core/matchers/toBeSpec.js
index e065af57..4d74a6de 100644
--- a/spec/core/matchers/toBeSpec.js
+++ b/spec/core/matchers/toBeSpec.js
@@ -1,6 +1,7 @@
 describe("toBe", function() {
   it("passes with no message when actual === expected", function() {
-    var matcher = jasmineUnderTest.matchers.toBe(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
       result;
 
     result = matcher.compare(1, 1);
@@ -8,7 +9,8 @@ describe("toBe", function() {
   });
 
   it("passes with a custom message when expected is an array", function() {
-    var matcher = jasmineUnderTest.matchers.toBe(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
       result,
       array = [1];
 
@@ -18,7 +20,8 @@ describe("toBe", function() {
   });
 
   it("passes with a custom message when expected is an object", function() {
-    var matcher = jasmineUnderTest.matchers.toBe(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
       result,
       obj = {foo: "bar"};
 
@@ -28,7 +31,8 @@ describe("toBe", function() {
   });
 
   it("fails with no message when actual !== expected", function() {
-    var matcher = jasmineUnderTest.matchers.toBe(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
       result;
 
     result = matcher.compare(1, 2);
@@ -37,7 +41,8 @@ describe("toBe", function() {
   });
 
   it("fails with a custom message when expected is an array", function() {
-    var matcher = jasmineUnderTest.matchers.toBe(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
       result;
 
     result = matcher.compare([1], [1]);
@@ -46,11 +51,24 @@ describe("toBe", function() {
   });
 
   it("fails with a custom message when expected is an object", function() {
-    var matcher = jasmineUnderTest.matchers.toBe(jasmineUnderTest.matchersUtil),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
       result;
 
     result = matcher.compare({foo: "bar"}, {foo: "bar"});
     expect(result.pass).toBe(false);
     expect(result.message).toBe("Expected Object({ foo: 'bar' }) to be Object({ foo: 'bar' }). Tip: To check for deep equality, use .toEqual() instead of .toBe().")
   });
+
+  it("works with custom object formatters when expected is an object", function() {
+    var formatter = function(x) { return '<' + x.foo + '>'; },
+      prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({pp: prettyPrinter}),
+      matcher = jasmineUnderTest.matchers.toBe(matchersUtil),
+      result;
+
+    result = matcher.compare({foo: "bar"}, {foo: "bar"});
+    expect(result.pass).toBe(false);
+    expect(result.message).toBe("Expected <bar> to be <bar>. Tip: To check for deep equality, use .toEqual() instead of .toBe().")
+  });
 });
diff --git a/spec/core/matchers/toContainSpec.js b/spec/core/matchers/toContainSpec.js
index a56d05e4..5fd1c8f8 100644
--- a/spec/core/matchers/toContainSpec.js
+++ b/spec/core/matchers/toContainSpec.js
@@ -1,26 +1,25 @@
 describe("toContain", function() {
   it("delegates to jasmineUnderTest.matchersUtil.contains", function() {
-    var util = {
+    var matchersUtil = {
         contains: jasmine.createSpy('delegated-contains').and.returnValue(true)
       },
-      matcher = jasmineUnderTest.matchers.toContain(util),
+      matcher = jasmineUnderTest.matchers.toContain(matchersUtil),
       result;
 
     result = matcher.compare("ABC", "B");
-    expect(util.contains).toHaveBeenCalledWith("ABC", "B", []);
+    expect(matchersUtil.contains).toHaveBeenCalledWith("ABC", "B");
     expect(result.pass).toBe(true);
   });
 
-  it("delegates to jasmineUnderTest.matchersUtil.contains, passing in equality testers if present", function() {
-    var util = {
-        contains: jasmine.createSpy('delegated-contains').and.returnValue(true)
+  it("works with custom equality testers", function() {
+    var tester = function (a, b) {
+        return a.toString() === b.toString();
       },
-      customEqualityTesters = ['a', 'b'],
-      matcher = jasmineUnderTest.matchers.toContain(util, customEqualityTesters),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]}),
+      matcher = jasmineUnderTest.matchers.toContain(matchersUtil),
       result;
 
-    result = matcher.compare("ABC", "B");
-    expect(util.contains).toHaveBeenCalledWith("ABC", "B", ['a', 'b']);
+    result = matcher.compare(['1', '2'], 2);
     expect(result.pass).toBe(true);
   });
 });
diff --git a/spec/core/matchers/toEqualSpec.js b/spec/core/matchers/toEqualSpec.js
index 69651a81..3a1ce985 100644
--- a/spec/core/matchers/toEqualSpec.js
+++ b/spec/core/matchers/toEqualSpec.js
@@ -2,8 +2,10 @@ describe("toEqual", function() {
   "use strict";
 
   function compareEquals(actual, expected) {
-    var util = jasmineUnderTest.matchersUtil,
-      matcher = jasmineUnderTest.matchers.toEqual(util);
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil);
 
     var result = matcher.compare(actual, expected);
 
@@ -11,37 +13,32 @@ describe("toEqual", function() {
   }
 
   it("delegates to equals function", function() {
-    var util = {
+    var matchersUtil = {
         equals: jasmine.createSpy('delegated-equals').and.returnValue(true),
         buildFailureMessage: function() {
-          return 'does not matter'
+          return 'does not matter';
         },
-        DiffBuilder: jasmineUnderTest.matchersUtil.DiffBuilder
+        DiffBuilder: new jasmineUnderTest.DiffBuilder()
       },
-      matcher = jasmineUnderTest.matchers.toEqual(util),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil),
       result;
 
     result = matcher.compare(1, 1);
 
-    expect(util.equals).toHaveBeenCalledWith(1, 1, [], jasmine.anything());
+    expect(matchersUtil.equals).toHaveBeenCalledWith(1, 1, jasmine.anything());
     expect(result.pass).toBe(true);
   });
 
-  it("delegates custom equality testers, if present", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equals').and.returnValue(true),
-        buildFailureMessage: function() {
-          return 'does not matter'
-        },
-        DiffBuilder: jasmineUnderTest.matchersUtil.DiffBuilder
+  it("works with custom equality testers", function() {
+    var tester = function (a, b) {
+        return a.toString() === b.toString();
       },
-      customEqualityTesters = ['a', 'b'],
-      matcher = jasmineUnderTest.matchers.toEqual(util, customEqualityTesters),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: [tester]}),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil),
       result;
 
-    result = matcher.compare(1, 1);
+    result = matcher.compare(1, '1');
 
-    expect(util.equals).toHaveBeenCalledWith(1, 1, ['a', 'b'], jasmine.anything());
     expect(result.pass).toBe(true);
   });
 
@@ -100,16 +97,66 @@ describe("toEqual", function() {
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
-  it("reports extra and missing properties together", function() {
+  it("uses custom object formatters to pretty-print simple properties", function() {
+    function formatter(x) {
+      if (typeof x === 'number') {
+        return '|' + x + '|';
+      }
+    }
+
     var actual = {x: {y: 1, z: 2, f: 4}},
       expected = {x: {y: 1, z: 2, g: 3}},
+      pp = jasmineUnderTest.makePrettyPrinter([formatter]),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil),
       message =
         "Expected $.x to have properties\n" +
-        "    g: 3\n" +
+        "    g: |3|\n" +
         "Expected $.x not to have properties\n" +
-        "    f: 4";
+        "    f: |4|";
 
-    expect(compareEquals(actual, expected).message).toEqual(message);
+    expect(matcher.compare(actual, expected).message).toEqual(message);
+  });
+
+  it("uses custom object formatters to show simple values in diffs", function() {
+    function formatter(x) {
+      if (typeof x === 'number') {
+        return '|' + x + '|';
+      }
+    }
+
+    var actual = [{foo: 4}],
+      expected = [{foo: 5}],
+      prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({pp: prettyPrinter}),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil),
+      message = "Expected $[0].foo = |4| to equal |5|.";
+
+    expect(matcher.compare(actual, expected).message).toEqual(message);
+  });
+
+  it("uses custom object formatters to show more complex objects diffs", function() {
+    function formatter(x) {
+      if (x.hasOwnProperty('a')) {
+        return '[thing with a=' + x.a + ', b=' + x.b + ']';
+      }
+    }
+
+    var actual = [{
+        foo: {a: 1, b: 2},
+        bar: 'should not be pretty printed'
+      }],
+      expected = [{
+        foo: {a: 5, b: 2},
+        bar: "shouldn't be pretty printed"
+      }],
+      prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({pp: prettyPrinter}),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil),
+      message = "Expected $[0].foo = [thing with a=1, b=2] to equal [thing with a=5, b=2].\n" +
+        "Expected $[0].bar = 'should not be pretty printed' to equal 'shouldn't be pretty printed'.";
+
+    expect(matcher.compare(actual, expected).message).toEqual(message);
   });
 
   it("reports extra and missing properties of the root-level object", function() {
@@ -282,12 +329,31 @@ describe("toEqual", function() {
     function Bar() {}
 
     var actual = {x: new Foo()},
-        expected = {x: new Bar()},
-        message = "Expected $.x to be a kind of Bar, but was Foo({  }).";
+      expected = {x: new Bar()},
+      message = "Expected $.x to be a kind of Bar, but was Foo({  }).";
 
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
+  it("uses custom object formatters for the value but not the type when reporting objects with different constructors", function () {
+    function Foo() {}
+    function Bar() {}
+    function formatter(x) {
+      if (x instanceof Foo || x instanceof Bar) {
+        return '|' + x + '|';
+      }
+    }
+
+    var actual = {x: new Foo()},
+      expected = {x: new Bar()},
+      message = "Expected $.x to be a kind of Bar, but was |[object Object]|.",
+      pp = jasmineUnderTest.makePrettyPrinter([formatter]),
+      matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+      matcher = jasmineUnderTest.matchers.toEqual(matchersUtil);
+
+    expect(matcher.compare(actual, expected).message).toEqual(message);
+  });
+
   it("reports type mismatches at the root level", function () {
     function Foo() {}
     function Bar() {}
@@ -299,6 +365,11 @@ describe("toEqual", function() {
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
+  it("reports value mismatches at the root level", function() {
+    expect(compareEquals(1, 2).message).toEqual("Expected 1 to equal 2.");
+  });
+
+
   it("reports mismatches between objects with their own constructor property", function () {
     function Foo() {}
     function Bar() {}
@@ -830,6 +901,24 @@ describe("toEqual", function() {
       expect(compareEquals(actual, expected).message).toEqual(message);
     });
 
+    it("uses custom object formatters when the actual array is longer", function() {
+      function formatter(x) {
+        if (typeof x === 'number') {
+          return '|' + x + '|';
+        }
+      }
+
+      var actual = [1, 1, 2, 3, 5],
+        expected = [1, 1, 2, 3],
+        pp = jasmineUnderTest.makePrettyPrinter([formatter]),
+        matchersUtil = new jasmineUnderTest.MatchersUtil({pp: pp}),
+        matcher = jasmineUnderTest.matchers.toEqual(matchersUtil),
+        message = 'Expected $.length = |5| to equal |4|.\n' +
+          'Unexpected $[4] = |5| in array.';
+
+      expect(matcher.compare(actual, expected).message).toEqual(message);
+    });
+
     it("expected array is longer", function() {
       var actual = [1, 1, 2, 3],
         expected = [1, 1, 2, 3, 5],
diff --git a/spec/core/matchers/toHaveBeenCalledBeforeSpec.js b/spec/core/matchers/toHaveBeenCalledBeforeSpec.js
index 53aa3fdb..266758fe 100644
--- a/spec/core/matchers/toHaveBeenCalledBeforeSpec.js
+++ b/spec/core/matchers/toHaveBeenCalledBeforeSpec.js
@@ -1,23 +1,25 @@
-describe("toHaveBeenCalledBefore", function () {
-  it("throws an exception when the actual is not a spy", function () {
-    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledBefore(),
-      fn = function () {
-      },
-      spy = new jasmineUnderTest.Spy('a spy');
+describe("toHaveBeenCalledBefore", function() {
+  it("throws an exception when the actual is not a spy", function() {
+    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledBefore({
+          pp: jasmineUnderTest.makePrettyPrinter()
+        }),
+        fn = function() {},
+        spy = new jasmineUnderTest.Env().createSpy('a spy');
 
     expect(function () {
-      matcher.compare(fn, spy)
+      matcher.compare(fn, spy);
     }).toThrowError(Error, /Expected a spy, but got Function./);
   });
 
-  it("throws an exception when the expected is not a spy", function () {
-    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledBefore(),
-      spy = new jasmineUnderTest.Spy('a spy'),
-      fn = function () {
-      };
+  it("throws an exception when the expected is not a spy", function() {
+    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledBefore({
+          pp: jasmineUnderTest.makePrettyPrinter()
+        }),
+        spy = new jasmineUnderTest.Env().createSpy('a spy'),
+        fn = function() {};
 
     expect(function () {
-      matcher.compare(spy, fn)
+      matcher.compare(spy, fn);
     }).toThrowError(Error, /Expected a spy, but got Function./);
   });
 
diff --git a/spec/core/matchers/toHaveBeenCalledSpec.js b/spec/core/matchers/toHaveBeenCalledSpec.js
index d39236c0..65106cf5 100644
--- a/spec/core/matchers/toHaveBeenCalledSpec.js
+++ b/spec/core/matchers/toHaveBeenCalledSpec.js
@@ -21,7 +21,9 @@ describe("toHaveBeenCalled", function() {
   });
 
   it("throws an exception when the actual is not a spy", function() {
-    var matcher = jasmineUnderTest.matchers.toHaveBeenCalled(),
+    var matcher = jasmineUnderTest.matchers.toHaveBeenCalled({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {};
 
     expect(function() { matcher.compare(fn) }).toThrowError(Error, /Expected a spy, but got Function./);
diff --git a/spec/core/matchers/toHaveBeenCalledTimesSpec.js b/spec/core/matchers/toHaveBeenCalledTimesSpec.js
index 7b3ad2b5..e2c0c0ed 100644
--- a/spec/core/matchers/toHaveBeenCalledTimesSpec.js
+++ b/spec/core/matchers/toHaveBeenCalledTimesSpec.js
@@ -49,7 +49,9 @@ describe("toHaveBeenCalledTimes", function() {
   });
 
   it("throws an exception when the actual is not a spy", function() {
-    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledTimes(),
+    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledTimes({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {};
 
     expect(function() {
diff --git a/spec/core/matchers/toHaveBeenCalledWithSpec.js b/spec/core/matchers/toHaveBeenCalledWithSpec.js
index 9cc3415b..5f391d6c 100644
--- a/spec/core/matchers/toHaveBeenCalledWithSpec.js
+++ b/spec/core/matchers/toHaveBeenCalledWithSpec.js
@@ -1,10 +1,11 @@
 describe("toHaveBeenCalledWith", function() {
 
   it("passes when the actual was called with matching parameters", function() {
-    var util = {
-          contains: jasmine.createSpy('delegated-contains').and.returnValue(true)
+    var matchersUtil = {
+          contains: jasmine.createSpy('delegated-contains').and.returnValue(true),
+          pp: jasmineUnderTest.makePrettyPrinter()
         },
-        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(util),
+        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(matchersUtil),
         calledSpy = new jasmineUnderTest.Spy('called-spy'),
         result;
 
@@ -15,25 +16,24 @@ describe("toHaveBeenCalledWith", function() {
     expect(result.message()).toEqual("Expected spy called-spy not to have been called with:\n  [ 'a', 'b' ]\nbut it was.");
   });
 
-  it("passes through the custom equality testers", function() {
-    var util = {
-          contains: jasmine.createSpy('delegated-contains').and.returnValue(true)
-        },
-        customEqualityTesters = [function() { return true; }],
-        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(util, customEqualityTesters),
-        calledSpy = new jasmineUnderTest.Spy('called-spy');
+  it("supports custom equality testers", function() {
+    var customEqualityTesters = [function() { return true; }],
+      matchersUtil = new jasmineUnderTest.MatchersUtil({customTesters: customEqualityTesters}),
+      matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(matchersUtil),
+      calledSpy = new jasmineUnderTest.Spy('called-spy'),
+      result;
 
     calledSpy('a', 'b');
-    matcher.compare(calledSpy, 'a', 'b');
-
-    expect(util.contains).toHaveBeenCalledWith([['a', 'b']], ['a', 'b'], customEqualityTesters);
+    result = matcher.compare(calledSpy, 'a', 'b');
+    expect(result.pass).toBe(true);
   });
 
   it("fails when the actual was not called", function() {
-    var util = {
-          contains: jasmine.createSpy('delegated-contains').and.returnValue(false)
+    var matchersUtil = {
+          contains: jasmine.createSpy('delegated-contains').and.returnValue(false),
+          pp: jasmineUnderTest.makePrettyPrinter()
         },
-        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(util),
+        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(matchersUtil),
         uncalledSpy = new jasmineUnderTest.Spy('uncalled spy'),
         result;
 
@@ -43,8 +43,8 @@ describe("toHaveBeenCalledWith", function() {
   });
 
   it("fails when the actual was called with different parameters", function() {
-    var util = jasmineUnderTest.matchersUtil,
-        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(util),
+    var matchersUtil = new jasmineUnderTest.MatchersUtil({pp: jasmineUnderTest.makePrettyPrinter()}),
+        matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(matchersUtil),
         calledSpy = new jasmineUnderTest.Spy('called spy'),
         result;
 
@@ -73,8 +73,11 @@ describe("toHaveBeenCalledWith", function() {
   });
 
   it("throws an exception when the actual is not a spy", function() {
-    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith(),
-        fn = function() {};
+    var matcher = jasmineUnderTest.matchers.toHaveBeenCalledWith({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
+      fn = function () {
+      };
 
     expect(function() { matcher.compare(fn) }).toThrowError(/Expected a spy, but got Function./);
   });
diff --git a/spec/core/matchers/toHaveClassSpec.js b/spec/core/matchers/toHaveClassSpec.js
index 109babbb..5f593abc 100644
--- a/spec/core/matchers/toHaveClassSpec.js
+++ b/spec/core/matchers/toHaveClassSpec.js
@@ -27,7 +27,9 @@ describe('toHaveClass', function() {
   });
 
   it('throws an exception when actual is not a DOM element', function() {
-    var matcher = jasmineUnderTest.matchers.toHaveClass();
+    var matcher = jasmineUnderTest.matchers.toHaveClass({
+      pp: jasmineUnderTest.makePrettyPrinter()
+    });
 
     expect(function() {
       matcher.compare('x', 'foo');
diff --git a/spec/core/matchers/toThrowErrorSpec.js b/spec/core/matchers/toThrowErrorSpec.js
index 148997ce..68fdf8be 100644
--- a/spec/core/matchers/toThrowErrorSpec.js
+++ b/spec/core/matchers/toThrowErrorSpec.js
@@ -54,7 +54,9 @@ describe("toThrowError", function() {
   });
 
   it("fails if thrown is not an instanceof Error", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw 4;
       },
@@ -103,7 +105,9 @@ describe("toThrowError", function() {
   });
 
   it("fails with the correct message if thrown is a falsy value", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw undefined;
       },
@@ -128,7 +132,9 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is an Error and the expected is the same message", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw new Error("foo");
       },
@@ -141,7 +147,9 @@ describe("toThrowError", function() {
   });
 
   it("fails if thrown is an Error and the expected is not the same message", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw new Error("foo");
       },
@@ -154,7 +162,9 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is an Error and the expected is a RegExp that matches the message", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw new Error("a long message");
       },
@@ -167,7 +177,9 @@ describe("toThrowError", function() {
   });
 
   it("fails if thrown is an Error and the expected is a RegExp that does not match the message", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw new Error("a long message");
       },
@@ -180,10 +192,7 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is an Error and the expected the same Error", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
-      },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError(),
       fn = function() {
         throw new Error();
       },
@@ -196,10 +205,7 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is a custom error that takes arguments and the expected is the same error", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
-      },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError(),
       CustomError = function CustomError(arg) { arg.x },
       fn = function() {
         throw new CustomError({ x: 1 });
@@ -215,10 +221,7 @@ describe("toThrowError", function() {
   });
 
   it("fails if thrown is an Error and the expected is a different Error", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(false)
-      },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+    var matcher = jasmineUnderTest.matchers.toThrowError(),
       fn = function() {
         throw new Error();
       },
@@ -231,10 +234,11 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is a type of Error and it is equal to the expected Error and message", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(true),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+      matcher = jasmineUnderTest.matchers.toThrowError(matchersUtil),
       fn = function() {
         throw new TypeError("foo");
       },
@@ -247,11 +251,12 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is a custom error that takes arguments and it is equal to the expected custom error and message", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(true),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
-      CustomError = function CustomError(arg) { this.message = arg.message },
+      matcher = jasmineUnderTest.matchers.toThrowError(matchersUtil),
+      CustomError = function CustomError(arg) { this.message = arg.message; },
       fn = function() {
         throw new CustomError({message: "foo"});
       },
@@ -266,10 +271,11 @@ describe("toThrowError", function() {
   });
 
   it("fails if thrown is a type of Error and the expected is a different Error", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(false)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(false),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+      matcher = jasmineUnderTest.matchers.toThrowError(matchersUtil),
       fn = function() {
         throw new TypeError("foo");
       },
@@ -282,10 +288,11 @@ describe("toThrowError", function() {
   });
 
   it("passes if thrown is a type of Error and has the same type as the expected Error and the message matches the expected message", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(true),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+      matcher = jasmineUnderTest.matchers.toThrowError(matchersUtil),
       fn = function() {
         throw new TypeError("foo");
       },
@@ -298,10 +305,11 @@ describe("toThrowError", function() {
   });
 
   it("fails if thrown is a type of Error and the expected is a different Error", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(false)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(false),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrowError(),
+      matcher = jasmineUnderTest.matchers.toThrowError(matchersUtil),
       fn = function() {
         throw new TypeError("foo");
       },
diff --git a/spec/core/matchers/toThrowMatchingSpec.js b/spec/core/matchers/toThrowMatchingSpec.js
index 1987b73d..507683b0 100644
--- a/spec/core/matchers/toThrowMatchingSpec.js
+++ b/spec/core/matchers/toThrowMatchingSpec.js
@@ -32,7 +32,9 @@ describe("toThrowMatching", function() {
   });
 
   it("fails with the correct message if thrown is a falsy value", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowMatching(),
+    var matcher = jasmineUnderTest.matchers.toThrowMatching({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw undefined;
       },
@@ -58,8 +60,10 @@ describe("toThrowMatching", function() {
   });
 
   it("fails if the argument is a function that returns false when called with the error", function() {
-    var matcher = jasmineUnderTest.matchers.toThrowMatching(),
-    predicate = function(e) { return e.message === "oh no" },
+    var matcher = jasmineUnderTest.matchers.toThrowMatching({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
+      predicate = function(e) { return e.message === "oh no" },
       fn = function() {
         throw new TypeError("nope");
       },
diff --git a/spec/core/matchers/toThrowSpec.js b/spec/core/matchers/toThrowSpec.js
index 03e11b38..7144b2b3 100644
--- a/spec/core/matchers/toThrowSpec.js
+++ b/spec/core/matchers/toThrowSpec.js
@@ -23,10 +23,11 @@ describe("toThrow", function() {
   });
 
   it("passes if it throws but there is no expected", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(true),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrow(util),
+      matcher = jasmineUnderTest.matchers.toThrow(matchersUtil),
       fn = function() {
         throw 5;
       },
@@ -39,7 +40,9 @@ describe("toThrow", function() {
   });
 
   it("passes even if what is thrown is falsy", function() {
-    var matcher = jasmineUnderTest.matchers.toThrow(),
+    var matcher = jasmineUnderTest.matchers.toThrow({
+        pp: jasmineUnderTest.makePrettyPrinter()
+      }),
       fn = function() {
         throw undefined;
       },
@@ -51,10 +54,11 @@ describe("toThrow", function() {
   });
 
   it("passes if what is thrown is equivalent to what is expected", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(true)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(true),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrow(util),
+      matcher = jasmineUnderTest.matchers.toThrow(matchersUtil),
       fn = function() {
         throw 5;
       },
@@ -67,10 +71,11 @@ describe("toThrow", function() {
   });
 
   it("fails if what is thrown is not equivalent to what is expected", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(false)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(false),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrow(util),
+      matcher = jasmineUnderTest.matchers.toThrow(matchersUtil),
       fn = function() {
         throw 5;
       },
@@ -83,10 +88,11 @@ describe("toThrow", function() {
   });
 
   it("fails if what is thrown is not equivalent to undefined", function() {
-    var util = {
-        equals: jasmine.createSpy('delegated-equal').and.returnValue(false)
+    var matchersUtil = {
+        equals: jasmine.createSpy('delegated-equal').and.returnValue(false),
+        pp: jasmineUnderTest.makePrettyPrinter()
       },
-      matcher = jasmineUnderTest.matchers.toThrow(util),
+      matcher = jasmineUnderTest.matchers.toThrow(matchersUtil),
       fn = function() {
         throw 5;
       },
diff --git a/spec/helpers/integrationMatchers.js b/spec/helpers/integrationMatchers.js
index 694ccd6e..75bec185 100644
--- a/spec/helpers/integrationMatchers.js
+++ b/spec/helpers/integrationMatchers.js
@@ -1,10 +1,7 @@
 (function(env) {
   env.registerIntegrationMatchers = function() {
     jasmine.addMatchers({
-      toHaveFailedExpectationsForRunnable: function(
-        util,
-        customeEqualityTesters
-      ) {
+      toHaveFailedExpectationsForRunnable: function() {
         return {
           compare: function(actual, fullName, expectedFailures) {
             var foundRunnable = false,
diff --git a/spec/html/PrettyPrintHtmlSpec.js b/spec/html/PrettyPrintHtmlSpec.js
index 77bb2bac..fd364d9e 100644
--- a/spec/html/PrettyPrintHtmlSpec.js
+++ b/spec/html/PrettyPrintHtmlSpec.js
@@ -1,43 +1,46 @@
-describe('jasmineUnderTest.pp (HTML Dependent)', function() {
+describe('PrettyPrinter (HTML Dependent)', function() {
   it('should stringify non-element HTML nodes properly', function() {
     var sampleNode = document.createTextNode('');
-    expect(jasmineUnderTest.pp(sampleNode)).toEqual('HTMLNode');
-    expect(jasmineUnderTest.pp({ foo: sampleNode })).toEqual(
-      'Object({ foo: HTMLNode })'
-    );
+    var pp = jasmineUnderTest.makePrettyPrinter();
+    expect(pp(sampleNode)).toEqual('HTMLNode');
+    expect(pp({ foo: sampleNode })).toEqual('Object({ foo: HTMLNode })');
   });
 
   it('should stringify empty HTML elements as their opening tags', function() {
     var simple = document.createElement('div');
+    var pp = jasmineUnderTest.makePrettyPrinter();
     simple.className = 'foo';
-    expect(jasmineUnderTest.pp(simple)).toEqual('<div class="foo">');
+    expect(pp(simple)).toEqual('<div class="foo">');
   });
 
   it('should stringify non-empty HTML elements as tags with placeholders', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var nonEmpty = document.createElement('div');
     nonEmpty.className = 'foo';
     nonEmpty.innerHTML = '<p>Irrelevant</p>';
-    expect(jasmineUnderTest.pp(nonEmpty)).toEqual('<div class="foo">...</div>');
+    expect(pp(nonEmpty)).toEqual('<div class="foo">...</div>');
   });
 
   it("should print Firefox's wrapped native objects correctly", function() {
     if (jasmine.getEnv().firefoxVersion) {
+      var pp = jasmineUnderTest.makePrettyPrinter();
       try {
         new CustomEvent();
       } catch (e) {
         var err = e;
       }
       // Different versions of FF produce different error messages.
-      expect(jasmineUnderTest.pp(err)).toMatch(
+      expect(pp(err)).toMatch(
         /Not enough arguments|CustomEvent requires at least 1 argument, but only 0 were passed/
       );
     }
   });
 
   it('should stringify HTML element with text and attributes', function() {
+    var pp = jasmineUnderTest.makePrettyPrinter();
     var el = document.createElement('div');
     el.setAttribute('things', 'foo');
     el.innerHTML = 'foo';
-    expect(jasmineUnderTest.pp(el)).toEqual('<div things="foo">...</div>');
+    expect(pp(el)).toEqual('<div things="foo">...</div>');
   });
 });
diff --git a/spec/npmPackage/npmPackageSpec.js b/spec/npmPackage/npmPackageSpec.js
index 5248d88c..ea292bc2 100644
--- a/spec/npmPackage/npmPackageSpec.js
+++ b/spec/npmPackage/npmPackageSpec.js
@@ -23,7 +23,7 @@ describe('npm package', function() {
 
   beforeEach(function() {
     jasmine.addMatchers({
-      toExistInPath: function(util, customEquality) {
+      toExistInPath: function() {
         return {
           compare: function(actual, expected) {
             var fullPath = path.resolve(expected, actual);
diff --git a/src/core/Env.js b/src/core/Env.js
index 6cc9329c..2cb9c2cc 100644
--- a/src/core/Env.js
+++ b/src/core/Env.js
@@ -276,6 +276,7 @@ getJasmineRequireObj().Env = function(j$) {
       }
       var customMatchers =
         runnableResources[currentRunnable().id].customMatchers;
+
       for (var matcherName in matchersToAdd) {
         customMatchers[matcherName] = matchersToAdd[matcherName];
       }
@@ -289,11 +290,24 @@ getJasmineRequireObj().Env = function(j$) {
       }
       var customAsyncMatchers =
         runnableResources[currentRunnable().id].customAsyncMatchers;
+
       for (var matcherName in matchersToAdd) {
         customAsyncMatchers[matcherName] = matchersToAdd[matcherName];
       }
     };
 
+    this.addCustomObjectFormatter = function(formatter) {
+      if (!currentRunnable()) {
+        throw new Error(
+          'Custom object formatters must be added in a before function or a spec'
+        );
+      }
+
+      runnableResources[currentRunnable().id].customObjectFormatters.push(
+        formatter
+      );
+    };
+
     j$.Expectation.addCoreMatchers(j$.matchers);
     j$.Expectation.addAsyncCoreMatchers(j$.asyncMatchers);
 
@@ -307,10 +321,28 @@ getJasmineRequireObj().Env = function(j$) {
       return 'suite' + nextSuiteId++;
     };
 
+    var makePrettyPrinter = function() {
+      var customObjectFormatters =
+        runnableResources[currentRunnable().id].customObjectFormatters;
+      return j$.makePrettyPrinter(customObjectFormatters);
+    };
+
+    var makeMatchersUtil = function() {
+      var customEqualityTesters =
+        runnableResources[currentRunnable().id].customEqualityTesters;
+      return new j$.MatchersUtil({
+        customTesters: customEqualityTesters,
+        pp: makePrettyPrinter()
+      });
+    };
+
     var expectationFactory = function(actual, spec) {
+      var customEqualityTesters =
+        runnableResources[spec.id].customEqualityTesters;
+
       return j$.Expectation.factory({
-        util: j$.matchersUtil,
-        customEqualityTesters: runnableResources[spec.id].customEqualityTesters,
+        matchersUtil: makeMatchersUtil(),
+        customEqualityTesters: customEqualityTesters,
         customMatchers: runnableResources[spec.id].customMatchers,
         actual: actual,
         addExpectationResult: addExpectationResult
@@ -349,7 +381,7 @@ getJasmineRequireObj().Env = function(j$) {
 
     var asyncExpectationFactory = function(actual, spec, runableType) {
       return j$.Expectation.asyncFactory({
-        util: j$.matchersUtil,
+        matchersUtil: makeMatchersUtil(),
         customEqualityTesters: runnableResources[spec.id].customEqualityTesters,
         customAsyncMatchers: runnableResources[spec.id].customAsyncMatchers,
         actual: actual,
@@ -378,7 +410,8 @@ getJasmineRequireObj().Env = function(j$) {
         customMatchers: {},
         customAsyncMatchers: {},
         customSpyStrategies: {},
-        defaultStrategyFn: undefined
+        defaultStrategyFn: undefined,
+        customObjectFormatters: []
       };
 
       if (runnableResources[parentRunnableId]) {
@@ -1171,7 +1204,7 @@ getJasmineRequireObj().Env = function(j$) {
           message += error;
         } else {
           // pretty print all kind of objects. This includes arrays.
-          message += j$.pp(error);
+          message += makePrettyPrinter()(error);
         }
       }
 
diff --git a/src/core/Expectation.js b/src/core/Expectation.js
index 37e1b7d6..940a8cfe 100644
--- a/src/core/Expectation.js
+++ b/src/core/Expectation.js
@@ -129,7 +129,7 @@ getJasmineRequireObj().Expectation = function(j$) {
     return result;
   }
 
-  function negatedFailureMessage(result, matcherName, args, util) {
+  function negatedFailureMessage(result, matcherName, args, matchersUtil) {
     if (result.message) {
       if (j$.isFunction_(result.message)) {
         return result.message();
@@ -141,7 +141,7 @@ getJasmineRequireObj().Expectation = function(j$) {
     args = args.slice();
     args.unshift(true);
     args.unshift(matcherName);
-    return util.buildFailureMessage.apply(null, args);
+    return matchersUtil.buildFailureMessage.apply(matchersUtil, args);
   }
 
   function negate(result) {
diff --git a/src/core/ExpectationFilterChain.js b/src/core/ExpectationFilterChain.js
index 6ecbd17c..d7f020b8 100644
--- a/src/core/ExpectationFilterChain.js
+++ b/src/core/ExpectationFilterChain.js
@@ -16,7 +16,7 @@ getJasmineRequireObj().ExpectationFilterChain = function() {
     result,
     matcherName,
     args,
-    util
+    matchersUtil
   ) {
     return this.callFirst_('buildFailureMessage', arguments).result;
   };
diff --git a/src/core/Expector.js b/src/core/Expector.js
index 78db5c1b..e0f7ae9c 100644
--- a/src/core/Expector.js
+++ b/src/core/Expector.js
@@ -1,6 +1,8 @@
 getJasmineRequireObj().Expector = function(j$) {
   function Expector(options) {
-    this.util = options.util || { buildFailureMessage: function() {} };
+    this.matchersUtil = options.matchersUtil || {
+      buildFailureMessage: function() {}
+    };
     this.customEqualityTesters = options.customEqualityTesters || [];
     this.actual = options.actual;
     this.addExpectationResult = options.addExpectationResult || function() {};
@@ -18,7 +20,7 @@ getJasmineRequireObj().Expector = function(j$) {
 
     this.args.unshift(this.actual);
 
-    var matcher = matcherFactory(this.util, this.customEqualityTesters);
+    var matcher = matcherFactory(this.matchersUtil, this.customEqualityTesters);
     var comparisonFunc = this.filters.selectComparisonFunc(matcher);
     return comparisonFunc || matcher.compare;
   };
@@ -34,7 +36,7 @@ getJasmineRequireObj().Expector = function(j$) {
       result,
       this.matcherName,
       this.args,
-      this.util,
+      this.matchersUtil,
       defaultMessage
     );
     return this.filters.modifyFailureMessage(msg || defaultMessage());
@@ -44,7 +46,10 @@ getJasmineRequireObj().Expector = function(j$) {
         var args = self.args.slice();
         args.unshift(false);
         args.unshift(self.matcherName);
-        return self.util.buildFailureMessage.apply(null, args);
+        return self.matchersUtil.buildFailureMessage.apply(
+          self.matchersUtil,
+          args
+        );
       } else if (j$.isFunction_(result.message)) {
         return result.message();
       } else {
diff --git a/src/core/PrettyPrinter.js b/src/core/PrettyPrinter.js
index e01afc80..5faa3bbf 100644
--- a/src/core/PrettyPrinter.js
+++ b/src/core/PrettyPrinter.js
@@ -1,9 +1,11 @@
-getJasmineRequireObj().pp = function(j$) {
-  function PrettyPrinter() {
+getJasmineRequireObj().makePrettyPrinter = function(j$) {
+  function SinglePrettyPrintRun(customObjectFormatters, pp) {
+    this.customObjectFormatters_ = customObjectFormatters;
     this.ppNestLevel_ = 0;
     this.seen = [];
     this.length = 0;
     this.stringParts = [];
+    this.pp_ = pp;
   }
 
   function hasCustomToString(value) {
@@ -21,10 +23,14 @@ getJasmineRequireObj().pp = function(j$) {
     }
   }
 
-  PrettyPrinter.prototype.format = function(value) {
+  SinglePrettyPrintRun.prototype.format = function(value) {
     this.ppNestLevel_++;
     try {
-      if (j$.util.isUndefined(value)) {
+      var customFormatResult = this.applyCustomFormatters_(value);
+
+      if (customFormatResult) {
+        this.emitScalar(customFormatResult);
+      } else if (j$.util.isUndefined(value)) {
         this.emitScalar('undefined');
       } else if (value === null) {
         this.emitScalar('null');
@@ -33,7 +39,7 @@ getJasmineRequireObj().pp = function(j$) {
       } else if (value === j$.getGlobal()) {
         this.emitScalar('<global>');
       } else if (value.jasmineToString) {
-        this.emitScalar(value.jasmineToString());
+        this.emitScalar(value.jasmineToString(this.pp_));
       } else if (typeof value === 'string') {
         this.emitString(value);
       } else if (j$.isSpy(value)) {
@@ -95,7 +101,11 @@ getJasmineRequireObj().pp = function(j$) {
     }
   };
 
-  PrettyPrinter.prototype.iterateObject = function(obj, fn) {
+  SinglePrettyPrintRun.prototype.applyCustomFormatters_ = function(value) {
+    return customFormat(value, this.customObjectFormatters_);
+  };
+
+  SinglePrettyPrintRun.prototype.iterateObject = function(obj, fn) {
     var objKeys = keys(obj, j$.isArray_(obj));
     var isGetter = function isGetter(prop) {};
 
@@ -114,15 +124,15 @@ getJasmineRequireObj().pp = function(j$) {
     return objKeys.length > length;
   };
 
-  PrettyPrinter.prototype.emitScalar = function(value) {
+  SinglePrettyPrintRun.prototype.emitScalar = function(value) {
     this.append(value);
   };
 
-  PrettyPrinter.prototype.emitString = function(value) {
+  SinglePrettyPrintRun.prototype.emitString = function(value) {
     this.append("'" + value + "'");
   };
 
-  PrettyPrinter.prototype.emitArray = function(array) {
+  SinglePrettyPrintRun.prototype.emitArray = function(array) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Array');
       return;
@@ -158,7 +168,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' ]');
   };
 
-  PrettyPrinter.prototype.emitSet = function(set) {
+  SinglePrettyPrintRun.prototype.emitSet = function(set) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Set');
       return;
@@ -183,7 +193,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
-  PrettyPrinter.prototype.emitMap = function(map) {
+  SinglePrettyPrintRun.prototype.emitMap = function(map) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Map');
       return;
@@ -208,7 +218,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
-  PrettyPrinter.prototype.emitObject = function(obj) {
+  SinglePrettyPrintRun.prototype.emitObject = function(obj) {
     var ctor = obj.constructor,
       constructorName;
 
@@ -244,7 +254,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' })');
   };
 
-  PrettyPrinter.prototype.emitTypedArray = function(arr) {
+  SinglePrettyPrintRun.prototype.emitTypedArray = function(arr) {
     var constructorName = j$.fnNameFor(arr.constructor),
       limitedArray = Array.prototype.slice.call(
         arr,
@@ -260,7 +270,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(constructorName + ' [ ' + itemsString + ' ]');
   };
 
-  PrettyPrinter.prototype.emitDomElement = function(el) {
+  SinglePrettyPrintRun.prototype.emitDomElement = function(el) {
     var tagName = el.tagName.toLowerCase(),
       attrs = el.attributes,
       i,
@@ -286,7 +296,11 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(out);
   };
 
-  PrettyPrinter.prototype.formatProperty = function(obj, property, isGetter) {
+  SinglePrettyPrintRun.prototype.formatProperty = function(
+    obj,
+    property,
+    isGetter
+  ) {
     this.append(property);
     this.append(': ');
     if (isGetter) {
@@ -296,7 +310,7 @@ getJasmineRequireObj().pp = function(j$) {
     }
   };
 
-  PrettyPrinter.prototype.append = function(value) {
+  SinglePrettyPrintRun.prototype.append = function(value) {
     // This check protects us from the rare case where an object has overriden
     // `toString()` with an invalid implementation (returning a non-string).
     if (typeof value !== 'string') {
@@ -360,9 +374,32 @@ getJasmineRequireObj().pp = function(j$) {
 
     return extraKeys;
   }
-  return function(value) {
-    var prettyPrinter = new PrettyPrinter();
-    prettyPrinter.format(value);
-    return prettyPrinter.stringParts.join('');
+
+  function customFormat(value, customObjectFormatters) {
+    var i, result;
+
+    for (i = 0; i < customObjectFormatters.length; i++) {
+      result = customObjectFormatters[i](value);
+
+      if (result !== undefined) {
+        return result;
+      }
+    }
+  }
+
+  return function(customObjectFormatters) {
+    customObjectFormatters = customObjectFormatters || [];
+
+    var pp = function(value) {
+      var prettyPrinter = new SinglePrettyPrintRun(customObjectFormatters, pp);
+      prettyPrinter.format(value);
+      return prettyPrinter.stringParts.join('');
+    };
+
+    pp.customFormat_ = function(value) {
+      return customFormat(value, customObjectFormatters);
+    };
+
+    return pp;
   };
 };
diff --git a/src/core/Spy.js b/src/core/Spy.js
index ffbb0103..7160f5d5 100644
--- a/src/core/Spy.js
+++ b/src/core/Spy.js
@@ -7,6 +7,11 @@ getJasmineRequireObj().Spy = function(j$) {
     };
   })();
 
+  var matchersUtil = new j$.MatchersUtil({
+    customTesters: [],
+    pp: j$.makePrettyPrinter()
+  });
+
   /**
    * _Note:_ Do not construct this directly, use {@link spyOn}, {@link spyOnProperty}, {@link jasmine.createSpy}, or {@link jasmine.createSpyObj}
    * @constructor
@@ -202,7 +207,7 @@ getJasmineRequireObj().Spy = function(j$) {
     var i;
 
     for (i = 0; i < this.strategies.length; i++) {
-      if (j$.matchersUtil.equals(args, this.strategies[i].args)) {
+      if (matchersUtil.equals(args, this.strategies[i].args)) {
         return this.strategies[i].strategy;
       }
     }
diff --git a/src/core/asymmetricEqualityTesterArgCompatShim.js b/src/core/asymmetricEqualityTesterArgCompatShim.js
new file mode 100644
index 00000000..faa4bf79
--- /dev/null
+++ b/src/core/asymmetricEqualityTesterArgCompatShim.js
@@ -0,0 +1,105 @@
+getJasmineRequireObj().asymmetricEqualityTesterArgCompatShim = function(j$) {
+  /*
+    Older versions of Jasmine passed an array of custom equality testers as the
+    second argument to each asymmetric equality tester's `asymmetricMatch`
+    method. Newer versions will pass a `MatchersUtil` instance. The
+    asymmetricEqualityTesterArgCompatShim allows for a graceful migration from
+    the old interface to the new by "being" both an array of custom equality
+    testers and a `MatchersUtil` at the same time.
+
+    This code should be removed in the next major release.
+   */
+
+  var likelyArrayProps = [
+    'concat',
+    'constructor',
+    'copyWithin',
+    'entries',
+    'every',
+    'fill',
+    'filter',
+    'find',
+    'findIndex',
+    'flat',
+    'flatMap',
+    'forEach',
+    'includes',
+    'indexOf',
+    'join',
+    'keys',
+    'lastIndexOf',
+    'length',
+    'map',
+    'pop',
+    'push',
+    'reduce',
+    'reduceRight',
+    'reverse',
+    'shift',
+    'slice',
+    'some',
+    'sort',
+    'splice',
+    'toLocaleString',
+    'toSource',
+    'toString',
+    'unshift',
+    'values'
+  ];
+
+  function asymmetricEqualityTesterArgCompatShim(
+    matchersUtil,
+    customEqualityTesters
+  ) {
+    var self = Object.create(matchersUtil),
+      props,
+      i,
+      k;
+
+    copy(self, customEqualityTesters, 'length');
+
+    for (i = 0; i < customEqualityTesters.length; i++) {
+      copy(self, customEqualityTesters, i);
+    }
+
+    var props = arrayProps();
+
+    for (i = 0; i < props.length; i++) {
+      k = props[i];
+      if (k !== 'length') {
+        copy(self, Array.prototype, k);
+      }
+    }
+
+    return self;
+  }
+
+  function copy(dest, src, propName) {
+    Object.defineProperty(dest, propName, {
+      get: function() {
+        return src[propName];
+      }
+    });
+  }
+
+  function arrayProps() {
+    var props, a, k;
+
+    if (!Object.getOwnPropertyDescriptors) {
+      return likelyArrayProps.filter(function(k) {
+        return Array.prototype.hasOwnProperty(k);
+      });
+    }
+
+    props = Object.getOwnPropertyDescriptors(Array.prototype);
+    a = [];
+
+    for (k in props) {
+      a.push(k);
+    }
+
+    return a;
+  }
+
+  return asymmetricEqualityTesterArgCompatShim;
+};
diff --git a/src/core/asymmetric_equality/ArrayContaining.js b/src/core/asymmetric_equality/ArrayContaining.js
index 92a85ed0..7faea8b4 100644
--- a/src/core/asymmetric_equality/ArrayContaining.js
+++ b/src/core/asymmetric_equality/ArrayContaining.js
@@ -3,7 +3,7 @@ getJasmineRequireObj().ArrayContaining = function(j$) {
     this.sample = sample;
   }
 
-  ArrayContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  ArrayContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isArray_(this.sample)) {
       throw new Error('You must provide an array to arrayContaining, not ' + j$.pp(this.sample) + '.');
     }
@@ -17,7 +17,7 @@ getJasmineRequireObj().ArrayContaining = function(j$) {
 
     for (var i = 0; i < this.sample.length; i++) {
       var item = this.sample[i];
-      if (!j$.matchersUtil.contains(other, item, customTesters)) {
+      if (!matchersUtil.contains(other, item)) {
         return false;
       }
     }
@@ -25,8 +25,8 @@ getJasmineRequireObj().ArrayContaining = function(j$) {
     return true;
   };
 
-  ArrayContaining.prototype.jasmineToString = function () {
-    return '<jasmine.arrayContaining(' + j$.pp(this.sample) +')>';
+  ArrayContaining.prototype.jasmineToString = function (pp) {
+    return '<jasmine.arrayContaining(' + pp(this.sample) +')>';
   };
 
   return ArrayContaining;
diff --git a/src/core/asymmetric_equality/ArrayWithExactContents.js b/src/core/asymmetric_equality/ArrayWithExactContents.js
index 37b8ee95..d2049047 100644
--- a/src/core/asymmetric_equality/ArrayWithExactContents.js
+++ b/src/core/asymmetric_equality/ArrayWithExactContents.js
@@ -4,7 +4,7 @@ getJasmineRequireObj().ArrayWithExactContents = function(j$) {
     this.sample = sample;
   }
 
-  ArrayWithExactContents.prototype.asymmetricMatch = function(other, customTesters) {
+  ArrayWithExactContents.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isArray_(this.sample)) {
       throw new Error('You must provide an array to arrayWithExactContents, not ' + j$.pp(this.sample) + '.');
     }
@@ -15,7 +15,7 @@ getJasmineRequireObj().ArrayWithExactContents = function(j$) {
 
     for (var i = 0; i < this.sample.length; i++) {
       var item = this.sample[i];
-      if (!j$.matchersUtil.contains(other, item, customTesters)) {
+      if (!matchersUtil.contains(other, item)) {
         return false;
       }
     }
@@ -23,8 +23,8 @@ getJasmineRequireObj().ArrayWithExactContents = function(j$) {
     return true;
   };
 
-  ArrayWithExactContents.prototype.jasmineToString = function() {
-    return '<jasmine.arrayWithExactContents ' + j$.pp(this.sample) + '>';
+  ArrayWithExactContents.prototype.jasmineToString = function(pp) {
+    return '<jasmine.arrayWithExactContents(' + pp(this.sample) + ')>';
   };
 
   return ArrayWithExactContents;
diff --git a/src/core/asymmetric_equality/MapContaining.js b/src/core/asymmetric_equality/MapContaining.js
index 061c2666..ba6b0ce9 100644
--- a/src/core/asymmetric_equality/MapContaining.js
+++ b/src/core/asymmetric_equality/MapContaining.js
@@ -7,7 +7,7 @@ getJasmineRequireObj().MapContaining = function(j$) {
     this.sample = sample;
   }
 
-  MapContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  MapContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isMap(other)) return false;
 
     var hasAllMatches = true;
@@ -17,8 +17,8 @@ getJasmineRequireObj().MapContaining = function(j$) {
       var hasMatch = false;
       j$.util.forEachBreakable(other, function(oBreakLoop, oValue, oKey) {
         if (
-          j$.matchersUtil.equals(oKey, key, customTesters)
-          && j$.matchersUtil.equals(oValue, value, customTesters)
+          matchersUtil.equals(oKey, key)
+          && matchersUtil.equals(oValue, value)
         ) {
           hasMatch = true;
           oBreakLoop();
@@ -33,8 +33,8 @@ getJasmineRequireObj().MapContaining = function(j$) {
     return hasAllMatches;
   };
 
-  MapContaining.prototype.jasmineToString = function() {
-    return '<jasmine.mapContaining(' + j$.pp(this.sample) + ')>';
+  MapContaining.prototype.jasmineToString = function(pp) {
+    return '<jasmine.mapContaining(' + pp(this.sample) + ')>';
   };
 
   return MapContaining;
diff --git a/src/core/asymmetric_equality/ObjectContaining.js b/src/core/asymmetric_equality/ObjectContaining.js
index a0d69135..4a8f4385 100644
--- a/src/core/asymmetric_equality/ObjectContaining.js
+++ b/src/core/asymmetric_equality/ObjectContaining.js
@@ -28,13 +28,13 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     return hasProperty(getPrototype(obj), property);
   }
 
-  ObjectContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  ObjectContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (typeof(this.sample) !== 'object') { throw new Error('You must provide an object to objectContaining, not \''+this.sample+'\'.'); }
     if (typeof(other) !== 'object') { return false; }
 
     for (var property in this.sample) {
       if (!hasProperty(other, property) ||
-          !j$.matchersUtil.equals(this.sample[property], other[property], customTesters)) {
+          !matchersUtil.equals(this.sample[property], other[property])) {
         return false;
       }
     }
@@ -42,10 +42,10 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     return true;
   };
 
-  ObjectContaining.prototype.valuesForDiff_ = function(other) {
+  ObjectContaining.prototype.valuesForDiff_ = function(other, pp) {
     if (!j$.isObject_(other)) {
       return {
-        self: this.jasmineToString(),
+        self: this.jasmineToString(pp),
         other: other
       };
     }
@@ -63,8 +63,8 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     };
   };
 
-  ObjectContaining.prototype.jasmineToString = function() {
-    return '<jasmine.objectContaining(' + j$.pp(this.sample) + ')>';
+  ObjectContaining.prototype.jasmineToString = function(pp) {
+    return '<jasmine.objectContaining(' + pp(this.sample) + ')>';
   };
 
   return ObjectContaining;
diff --git a/src/core/asymmetric_equality/SetContaining.js b/src/core/asymmetric_equality/SetContaining.js
index d9dd8fd2..f3ad3527 100644
--- a/src/core/asymmetric_equality/SetContaining.js
+++ b/src/core/asymmetric_equality/SetContaining.js
@@ -7,17 +7,17 @@ getJasmineRequireObj().SetContaining = function(j$) {
     this.sample = sample;
   }
 
-  SetContaining.prototype.asymmetricMatch = function(other, customTesters) {
+  SetContaining.prototype.asymmetricMatch = function(other, matchersUtil) {
     if (!j$.isSet(other)) return false;
 
     var hasAllMatches = true;
     j$.util.forEachBreakable(this.sample, function(breakLoop, item) {
       // for each item in `sample` there should be at least one matching item in `other`
-      // (not using `j$.matchersUtil.contains` because it compares set members by reference,
+      // (not using `matchersUtil.contains` because it compares set members by reference,
       // not by deep value equality)
       var hasMatch = false;
       j$.util.forEachBreakable(other, function(oBreakLoop, oItem) {
-        if (j$.matchersUtil.equals(oItem, item, customTesters)) {
+        if (matchersUtil.equals(oItem, item)) {
           hasMatch = true;
           oBreakLoop();
         }
@@ -31,8 +31,8 @@ getJasmineRequireObj().SetContaining = function(j$) {
     return hasAllMatches;
   };
 
-  SetContaining.prototype.jasmineToString = function() {
-    return '<jasmine.setContaining(' + j$.pp(this.sample) + ')>';
+  SetContaining.prototype.jasmineToString = function(pp) {
+    return '<jasmine.setContaining(' + pp(this.sample) + ')>';
   };
 
   return SetContaining;
diff --git a/src/core/matchers/DiffBuilder.js b/src/core/matchers/DiffBuilder.js
index 131b5b92..197e4c71 100644
--- a/src/core/matchers/DiffBuilder.js
+++ b/src/core/matchers/DiffBuilder.js
@@ -1,16 +1,51 @@
-getJasmineRequireObj().DiffBuilder = function(j$) {
-  return function DiffBuilder() {
-    var path = new j$.ObjectPath(),
-        mismatches = [];
+getJasmineRequireObj().DiffBuilder = function (j$) {
+  return function DiffBuilder(config) {
+    var prettyPrinter = (config || {}).prettyPrinter || j$.makePrettyPrinter(),
+      mismatches = new j$.MismatchTree(),
+      path = new j$.ObjectPath(),
+      actualRoot = undefined,
+      expectedRoot = undefined;
 
     return {
-      record: function (actual, expected, formatter) {
-        formatter = formatter || defaultFormatter;
-        mismatches.push(formatter(actual, expected, path));
+      setRoots: function (actual, expected) {
+        actualRoot = actual;
+        expectedRoot = expected;
+      },
+
+      recordMismatch: function (formatter) {
+        mismatches.add(path, formatter);
       },
 
       getMessage: function () {
-        return mismatches.join('\n');
+        var messages = [];
+
+        mismatches.traverse(function (path, isLeaf, formatter) {
+          var actualCustom, expectedCustom, useCustom,
+            actual = path.dereference(actualRoot),
+            expected = path.dereference(expectedRoot);
+
+          if (formatter) {
+            messages.push(formatter(actual, expected, path, prettyPrinter));
+            return true;
+          }
+
+          actualCustom = prettyPrinter.customFormat_(actual);
+          expectedCustom = prettyPrinter.customFormat_(expected);
+          useCustom = !(j$.util.isUndefined(actualCustom) && j$.util.isUndefined(expectedCustom));
+
+          if (useCustom) {
+            messages.push(wrapPrettyPrinted(actualCustom, expectedCustom, path));
+            return false; // don't recurse further
+          }
+
+          if (isLeaf) {
+            messages.push(defaultFormatter(actual, expected, path, prettyPrinter));
+          }
+
+          return true;
+        });
+
+        return messages.join('\n');
       },
 
       withPath: function (pathComponent, block) {
@@ -21,12 +56,16 @@ getJasmineRequireObj().DiffBuilder = function(j$) {
       }
     };
 
-    function defaultFormatter (actual, expected, path) {
+    function defaultFormatter(actual, expected, path, prettyPrinter) {
+      return wrapPrettyPrinted(prettyPrinter(actual), prettyPrinter(expected), path);
+    }
+
+    function wrapPrettyPrinted(actual, expected, path) {
       return 'Expected ' +
         path + (path.depth() ? ' = ' : '') +
-        j$.pp(actual) +
+        actual +
         ' to equal ' +
-        j$.pp(expected) +
+        expected +
         '.';
     }
   };
diff --git a/src/core/matchers/MismatchTree.js b/src/core/matchers/MismatchTree.js
new file mode 100644
index 00000000..1ce356de
--- /dev/null
+++ b/src/core/matchers/MismatchTree.js
@@ -0,0 +1,62 @@
+getJasmineRequireObj().MismatchTree = function (j$) {
+
+  /*
+    To be able to apply custom object formatters at all possible levels of an
+    object graph, DiffBuilder needs to be able to know not just where the
+    mismatch occurred but also all ancestors of the mismatched value in both
+    the expected and actual object graphs. MismatchTree maintains that context
+    and provides it via the traverse method.
+   */
+  function MismatchTree(path) {
+    this.path = path || new j$.ObjectPath([]);
+    this.formatter = undefined;
+    this.children = [];
+    this.isMismatch = false;
+  }
+
+  MismatchTree.prototype.add = function (path, formatter) {
+    var key, child;
+
+    if (path.depth() === 0) {
+      this.formatter = formatter;
+      this.isMismatch = true;
+    } else {
+      key = path.components[0];
+      path = path.shift();
+      child = this.child(key);
+
+      if (!child) {
+        child = new MismatchTree(this.path.add(key));
+        this.children.push(child);
+      }
+
+      child.add(path, formatter);
+    }
+  };
+
+  MismatchTree.prototype.traverse = function (visit) {
+    var i, hasChildren = this.children.length > 0;
+
+    if (this.isMismatch || hasChildren) {
+      if (visit(this.path, !hasChildren, this.formatter)) {
+        for (i = 0; i < this.children.length; i++) {
+          this.children[i].traverse(visit);
+        }
+      }
+    }
+  };
+
+  MismatchTree.prototype.child = function(key) {
+    var i, pathEls;
+
+    for (i = 0; i < this.children.length; i++) {
+      pathEls = this.children[i].path.components;
+      if (pathEls[pathEls.length - 1] === key) {
+        return this.children[i];
+      }
+    }
+  };
+
+  return MismatchTree;
+};
+
diff --git a/src/core/matchers/NullDiffBuilder.js b/src/core/matchers/NullDiffBuilder.js
index de7d3464..cb6672e4 100644
--- a/src/core/matchers/NullDiffBuilder.js
+++ b/src/core/matchers/NullDiffBuilder.js
@@ -4,7 +4,8 @@ getJasmineRequireObj().NullDiffBuilder = function(j$) {
       withPath: function(_, block) {
         block();
       },
-      record: function() {}
+      setRoots: function() {},
+      recordMismatch: function() {}
     };
   };
 };
diff --git a/src/core/matchers/ObjectPath.js b/src/core/matchers/ObjectPath.js
index cd1629e2..266e8e62 100644
--- a/src/core/matchers/ObjectPath.js
+++ b/src/core/matchers/ObjectPath.js
@@ -11,10 +11,24 @@ getJasmineRequireObj().ObjectPath = function(j$) {
     }
   };
 
+  ObjectPath.prototype.dereference = function(obj) {
+    var i;
+
+    for (i = 0; i < this.components.length; i++) {
+      obj = obj[this.components[i]];
+    }
+
+    return obj;
+  };
+
   ObjectPath.prototype.add = function(component) {
     return new ObjectPath(this.components.concat([component]));
   };
 
+  ObjectPath.prototype.shift = function() {
+    return new ObjectPath(this.components.slice(1));
+  };
+
   ObjectPath.prototype.depth = function() {
     return this.components.length;
   };
diff --git a/src/core/matchers/async/toBeRejected.js b/src/core/matchers/async/toBeRejected.js
index 62f1a3e9..3ec95bf3 100644
--- a/src/core/matchers/async/toBeRejected.js
+++ b/src/core/matchers/async/toBeRejected.js
@@ -10,7 +10,7 @@ getJasmineRequireObj().toBeRejected = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeRejected();
    */
-  return function toBeRejected(util) {
+  return function toBeRejected() {
     return {
       compare: function(actual) {
         if (!j$.isPromiseLike(actual)) {
diff --git a/src/core/matchers/async/toBeRejectedWith.js b/src/core/matchers/async/toBeRejectedWith.js
index 031230a1..6c0af904 100644
--- a/src/core/matchers/async/toBeRejectedWith.js
+++ b/src/core/matchers/async/toBeRejectedWith.js
@@ -11,7 +11,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeRejectedWith({prop: 'value'});
    */
-  return function toBeRejectedWith(util, customEqualityTesters) {
+  return function toBeRejectedWith(matchersUtil) {
     return {
       compare: function(actualPromise, expectedValue) {
         if (!j$.isPromiseLike(actualPromise)) {
@@ -21,7 +21,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
         function prefix(passed) {
           return 'Expected a promise ' +
             (passed ? 'not ' : '') +
-            'to be rejected with ' + j$.pp(expectedValue);
+            'to be rejected with ' + matchersUtil.pp(expectedValue);
         }
 
         return actualPromise.then(
@@ -32,7 +32,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
           };
         },
         function(actualValue) {
-          if (util.equals(actualValue, expectedValue, customEqualityTesters)) {
+          if (matchersUtil.equals(actualValue, expectedValue)) {
             return {
               pass: true,
               message: prefix(true) + '.'
@@ -40,7 +40,7 @@ getJasmineRequireObj().toBeRejectedWith = function(j$) {
           } else {
             return {
               pass: false,
-              message: prefix(false) + ' but it was rejected with ' + j$.pp(actualValue) + '.'
+              message: prefix(false) + ' but it was rejected with ' + matchersUtil.pp(actualValue) + '.'
             };
           }
         }
diff --git a/src/core/matchers/async/toBeRejectedWithError.js b/src/core/matchers/async/toBeRejectedWithError.js
index 8a578a60..203cd863 100644
--- a/src/core/matchers/async/toBeRejectedWithError.js
+++ b/src/core/matchers/async/toBeRejectedWithError.js
@@ -14,14 +14,14 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
    * await expectAsync(aPromise).toBeRejectedWithError('Error message');
    * return expectAsync(aPromise).toBeRejectedWithError(/Error message/);
    */
-  return function toBeRejectedWithError() {
+  return function toBeRejectedWithError(matchersUtil) {
     return {
       compare: function(actualPromise, arg1, arg2) {
         if (!j$.isPromiseLike(actualPromise)) {
           throw new Error('Expected toBeRejectedWithError to be called on a promise.');
         }
 
-        var expected = getExpectedFromArgs(arg1, arg2);
+        var expected = getExpectedFromArgs(arg1, arg2, matchersUtil);
 
         return actualPromise.then(
           function() {
@@ -30,15 +30,15 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
               message: 'Expected a promise to be rejected but it was resolved.'
             };
           },
-          function(actualValue) { return matchError(actualValue, expected); }
+          function(actualValue) { return matchError(actualValue, expected, matchersUtil); }
         );
       }
     };
   };
 
-  function matchError(actual, expected) {
+  function matchError(actual, expected, matchersUtil) {
     if (!j$.isError_(actual)) {
-      return fail(expected, 'rejected with ' + j$.pp(actual));
+      return fail(expected, 'rejected with ' + matchersUtil.pp(actual));
     }
 
     if (!(actual instanceof expected.error)) {
@@ -55,7 +55,7 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
       return pass(expected);
     }
 
-    return fail(expected, 'rejected with ' + j$.pp(actual));
+    return fail(expected, 'rejected with ' + matchersUtil.pp(actual));
   }
 
   function pass(expected) {
@@ -73,7 +73,7 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
   }
 
 
-  function getExpectedFromArgs(arg1, arg2) {
+  function getExpectedFromArgs(arg1, arg2, matchersUtil) {
     var error, message;
 
     if (isErrorConstructor(arg1)) {
@@ -87,7 +87,7 @@ getJasmineRequireObj().toBeRejectedWithError = function(j$) {
     return {
       error: error,
       message: message,
-      printValue: j$.fnNameFor(error) + (typeof message === 'undefined' ? '' : ': ' + j$.pp(message))
+      printValue: j$.fnNameFor(error) + (typeof message === 'undefined' ? '' : ': ' + matchersUtil.pp(message))
     };
   }
 
diff --git a/src/core/matchers/async/toBeResolved.js b/src/core/matchers/async/toBeResolved.js
index efe367e9..997ddeea 100644
--- a/src/core/matchers/async/toBeResolved.js
+++ b/src/core/matchers/async/toBeResolved.js
@@ -10,7 +10,7 @@ getJasmineRequireObj().toBeResolved = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeResolved();
    */
-  return function toBeResolved(util) {
+  return function toBeResolved() {
     return {
       compare: function(actual) {
         if (!j$.isPromiseLike(actual)) {
diff --git a/src/core/matchers/async/toBeResolvedTo.js b/src/core/matchers/async/toBeResolvedTo.js
index 9d5aa370..61abb9f2 100644
--- a/src/core/matchers/async/toBeResolvedTo.js
+++ b/src/core/matchers/async/toBeResolvedTo.js
@@ -11,7 +11,7 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
    * @example
    * return expectAsync(aPromise).toBeResolvedTo({prop: 'value'});
    */
-  return function toBeResolvedTo(util, customEqualityTesters) {
+  return function toBeResolvedTo(matchersUtil) {
     return {
       compare: function(actualPromise, expectedValue) {
         if (!j$.isPromiseLike(actualPromise)) {
@@ -21,12 +21,12 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
         function prefix(passed) {
           return 'Expected a promise ' +
             (passed ? 'not ' : '') +
-            'to be resolved to ' + j$.pp(expectedValue);
+            'to be resolved to ' + matchersUtil.pp(expectedValue);
         }
 
         return actualPromise.then(
           function(actualValue) {
-            if (util.equals(actualValue, expectedValue, customEqualityTesters)) {
+            if (matchersUtil.equals(actualValue, expectedValue)) {
               return {
                 pass: true,
                 message: prefix(true) + '.'
@@ -34,7 +34,7 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
             } else {
               return {
                 pass: false,
-                message: prefix(false) + ' but it was resolved to ' + j$.pp(actualValue) + '.'
+                message: prefix(false) + ' but it was resolved to ' + matchersUtil.pp(actualValue) + '.'
               };
             }
           },
diff --git a/src/core/matchers/matchersUtil.js b/src/core/matchers/matchersUtil.js
index 7183d5e7..e79dd075 100644
--- a/src/core/matchers/matchersUtil.js
+++ b/src/core/matchers/matchersUtil.js
@@ -1,72 +1,100 @@
-getJasmineRequireObj().matchersUtil = function(j$) {
-  // TODO: what to do about jasmine.pp not being inject? move to JSON.stringify? gut PrettyPrinter?
+getJasmineRequireObj().MatchersUtil = function(j$) {
+  // TODO: convert all uses of j$.pp to use the injected pp
 
-  return {
-    equals: equals,
+  /**
+   * _Note:_ Do not construct this directly. Jasmine will construct one and
+   * pass it to matchers and asymmetric equality testers.
+   * @name MatchersUtil
+   * @since 2.0.0
+   * @classdesc Utilities for use in implementing matchers
+   * @constructor
+   */
+  function MatchersUtil(options) {
+    options = options || {};
+    this.customTesters_ = options.customTesters || [];
+    /**
+     * Formats a value for use in matcher failure messages and similar contexts,
+     * taking into account the current set of custom value formatters.
+     * @function
+     * @name MatchersUtil#pp
+     * @param {*} value The value to pretty-print
+     * @return {string} The pretty-printed value
+     */
+    this.pp = options.pp || function() {};
+  };
 
-    contains: function(haystack, needle, customTesters) {
-      customTesters = customTesters || [];
-
-      if (j$.isSet(haystack)) {
-        return haystack.has(needle);
-      }
-
-      if ((Object.prototype.toString.apply(haystack) === '[object Array]') ||
-        (!!haystack && !haystack.indexOf))
-      {
-        for (var i = 0; i < haystack.length; i++) {
-          if (equals(haystack[i], needle, customTesters)) {
-            return true;
-          }
-        }
-        return false;
-      }
-
-      return !!haystack && haystack.indexOf(needle) >= 0;
-    },
-
-    buildFailureMessage: function() {
-      var args = Array.prototype.slice.call(arguments, 0),
-        matcherName = args[0],
-        isNot = args[1],
-        actual = args[2],
-        expected = args.slice(3),
-        englishyPredicate = matcherName.replace(/[A-Z]/g, function(s) { return ' ' + s.toLowerCase(); });
-
-      var message = 'Expected ' +
-        j$.pp(actual) +
-        (isNot ? ' not ' : ' ') +
-        englishyPredicate;
-
-      if (expected.length > 0) {
-        for (var i = 0; i < expected.length; i++) {
-          if (i > 0) {
-            message += ',';
-          }
-          message += ' ' + j$.pp(expected[i]);
-        }
-      }
-
-      return message + '.';
+  /**
+   * Determines whether `haystack` contains `needle`, using the same comparison
+   * logic as {@link MatchersUtil#equals}.
+   * @function
+   * @name MatchersUtil#contains
+   * @param {*} haystack The collection to search
+   * @param {*} needle The value to search for
+   * @param [customTesters] An array of custom equality testers
+   * @returns {boolean} True if `needle` was found in `haystack`
+   */
+  MatchersUtil.prototype.contains = function(haystack, needle, customTesters) {
+    if (j$.isSet(haystack)) {
+      return haystack.has(needle);
     }
+
+    if ((Object.prototype.toString.apply(haystack) === '[object Array]') ||
+      (!!haystack && !haystack.indexOf))
+    {
+      for (var i = 0; i < haystack.length; i++) {
+        if (this.equals(haystack[i], needle, customTesters)) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    return !!haystack && haystack.indexOf(needle) >= 0;
+  };
+
+  MatchersUtil.prototype.buildFailureMessage = function() {
+    var self = this;
+    var args = Array.prototype.slice.call(arguments, 0),
+      matcherName = args[0],
+      isNot = args[1],
+      actual = args[2],
+      expected = args.slice(3),
+      englishyPredicate = matcherName.replace(/[A-Z]/g, function(s) { return ' ' + s.toLowerCase(); });
+
+    var message = 'Expected ' +
+      self.pp(actual) +
+      (isNot ? ' not ' : ' ') +
+      englishyPredicate;
+
+    if (expected.length > 0) {
+      for (var i = 0; i < expected.length; i++) {
+        if (i > 0) {
+          message += ',';
+        }
+        message += ' ' + self.pp(expected[i]);
+      }
+    }
+
+    return message + '.';
   };
 
   function isAsymmetric(obj) {
     return obj && j$.isA_('Function', obj.asymmetricMatch);
   }
 
-  function asymmetricDiff(a, b, aStack, bStack, customTesters, diffBuilder) {
+  MatchersUtil.prototype.asymmetricDiff_ = function(a, b, aStack, bStack, customTesters, diffBuilder) {
     if (j$.isFunction_(b.valuesForDiff_)) {
       var values = b.valuesForDiff_(a);
-      eq(values.other, values.self, aStack, bStack, customTesters, diffBuilder);
+      this.eq_(values.other, values.self, aStack, bStack, customTesters, diffBuilder);
     } else {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
     }
-  }
+  };
 
-  function asymmetricMatch(a, b, aStack, bStack, customTesters, diffBuilder) {
+  MatchersUtil.prototype.asymmetricMatch_ = function(a, b, aStack, bStack, customTesters, diffBuilder) {
     var asymmetricA = isAsymmetric(a),
         asymmetricB = isAsymmetric(b),
+        shim = j$.asymmetricEqualityTesterArgCompatShim(this, customTesters),
         result;
 
     if (asymmetricA && asymmetricB) {
@@ -74,37 +102,56 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     }
 
     if (asymmetricA) {
-      result = a.asymmetricMatch(b, customTesters);
+      result = a.asymmetricMatch(b, shim);
       if (!result) {
         // TODO: Do we want to build an asymmetric diff when the actual was an
         // asymmeteric equality tester? Might be confusing.
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
 
     if (asymmetricB) {
-      result = b.asymmetricMatch(a, customTesters);
+      result = b.asymmetricMatch(a, shim);
       if (!result) {
-        asymmetricDiff(a, b, aStack, bStack, customTesters, diffBuilder);
+        this.asymmetricDiff_(a, b, aStack, bStack, customTesters, diffBuilder);
       }
       return result;
     }
-  }
+  };
 
-  function equals(a, b, customTesters, diffBuilder) {
-    customTesters = customTesters || [];
+  /**
+   * Determines whether two values are deeply equal to each other.
+   * @function
+   * @name MatchersUtil#equals
+   * @param {*} a The first value to compare
+   * @param {*} b The second value to compare
+   * @param [customTesters] An array of custom equality testers
+   * @returns {boolean} True if the values are equal
+   */
+  MatchersUtil.prototype.equals = function(a, b, customTestersOrDiffBuilder, diffBuilderOrNothing) {
+    var customTesters, diffBuilder;
+
+    if (isDiffBuilder(customTestersOrDiffBuilder)) {
+      diffBuilder = customTestersOrDiffBuilder;
+    } else {
+      customTesters = customTestersOrDiffBuilder;
+      diffBuilder = diffBuilderOrNothing;
+    }
+
+    customTesters = customTesters || this.customTesters_;
     diffBuilder = diffBuilder || j$.NullDiffBuilder();
+    diffBuilder.setRoots(a, b);
 
-    return eq(a, b, [], [], customTesters, diffBuilder);
-  }
+    return this.eq_(a, b, [], [], customTesters, diffBuilder);
+  };
 
   // Equality function lovingly adapted from isEqual in
   //   [Underscore](http://underscorejs.org)
-  function eq(a, b, aStack, bStack, customTesters, diffBuilder) {
-    var result = true, i;
+  MatchersUtil.prototype.eq_ = function(a, b, aStack, bStack, customTesters, diffBuilder) {
+    var result = true, self = this, i;
 
-    var asymmetricResult = asymmetricMatch(a, b, aStack, bStack, customTesters, diffBuilder);
+    var asymmetricResult = this.asymmetricMatch_(a, b, aStack, bStack, customTesters, diffBuilder);
     if (!j$.util.isUndefined(asymmetricResult)) {
       return asymmetricResult;
     }
@@ -113,7 +160,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       var customTesterResult = customTesters[i](a, b);
       if (!j$.util.isUndefined(customTesterResult)) {
         if (!customTesterResult) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return customTesterResult;
       }
@@ -122,7 +169,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     if (a instanceof Error && b instanceof Error) {
       result = a.message == b.message;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -132,7 +179,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     if (a === b) {
       result = a !== 0 || 1 / a == 1 / b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -140,13 +187,13 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     if (a === null || b === null) {
       result = a === b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     var className = Object.prototype.toString.call(a);
     if (className != Object.prototype.toString.call(b)) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
     switch (className) {
@@ -156,7 +203,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
         // equivalent to `new String("5")`.
         result = a == String(b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Number]':
@@ -164,7 +211,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
         // other numeric values.
         result = a != +a ? b != +b : (a === 0 && b === 0 ? 1 / a == 1 / b : a == +b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Date]':
@@ -174,7 +221,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
         // of `NaN` are not equivalent.
         result = +a == +b;
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       // RegExps are compared by their source patterns and flags.
@@ -185,7 +232,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
           a.ignoreCase == b.ignoreCase;
     }
     if (typeof a != 'object' || typeof b != 'object') {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -195,12 +242,12 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       // At first try to use DOM3 method isEqualNode
       result = a.isEqualNode(b);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     if (aIsDomNode || bIsDomNode) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -230,7 +277,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
 
       diffBuilder.withPath('length', function() {
         if (aLength !== bLength) {
-          diffBuilder.record(aLength, bLength);
+          diffBuilder.recordMismatch();
           result = false;
         }
       });
@@ -238,10 +285,10 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       for (i = 0; i < aLength || i < bLength; i++) {
         diffBuilder.withPath(i, function() {
           if (i >= bLength) {
-            diffBuilder.record(a[i], void 0, actualArrayIsLongerFormatter);
+            diffBuilder.recordMismatch(actualArrayIsLongerFormatter.bind(null, self.pp));
             result = false;
           } else {
-            result = eq(i < aLength ? a[i] : void 0, i < bLength ? b[i] : void 0, aStack, bStack, customTesters, diffBuilder) && result;
+            result = self.eq_(i < aLength ? a[i] : void 0, i < bLength ? b[i] : void 0, aStack, bStack, customTesters, diffBuilder) && result;
           }
         });
       }
@@ -250,7 +297,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       }
     } else if (j$.isMap(a) && j$.isMap(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -282,22 +329,22 @@ getJasmineRequireObj().matchersUtil = function(j$) {
           // otherwise explicitly look up the mapKey in the other Map since we want keys with unique
           // obj identity (that are otherwise equal) to not match.
           if (isAsymmetric(mapKey) || isAsymmetric(cmpKey) &&
-              eq(mapKey, cmpKey, aStack, bStack, customTesters, j$.NullDiffBuilder())) {
+              this.eq_(mapKey, cmpKey, aStack, bStack, customTesters, j$.NullDiffBuilder())) {
             mapValueB = b.get(cmpKey);
           } else {
             mapValueB = b.get(mapKey);
           }
-          result = eq(mapValueA, mapValueB, aStack, bStack, customTesters, j$.NullDiffBuilder());
+          result = this.eq_(mapValueA, mapValueB, aStack, bStack, customTesters, j$.NullDiffBuilder());
         }
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else if (j$.isSet(a) && j$.isSet(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -331,7 +378,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
             otherValue = otherValues[l];
             prevStackSize = baseStack.length;
             // compare by value equality
-            found = eq(baseValue, otherValue, baseStack, otherStack, customTesters, j$.NullDiffBuilder());
+            found = this.eq_(baseValue, otherValue, baseStack, otherStack, customTesters, j$.NullDiffBuilder());
             if (!found && prevStackSize !== baseStack.length) {
               baseStack.splice(prevStackSize);
               otherStack.splice(prevStackSize);
@@ -342,7 +389,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else {
@@ -355,7 +402,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
           a instanceof aCtor && b instanceof bCtor &&
           !(aCtor instanceof aCtor && bCtor instanceof bCtor)) {
 
-        diffBuilder.record(a, b, constructorsAreDifferentFormatter);
+        diffBuilder.recordMismatch(constructorsAreDifferentFormatter.bind(null, this.pp));
         return false;
       }
     }
@@ -366,7 +413,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
 
     // Ensure that both objects contain the same number of properties before comparing deep equality.
     if (keys(b, className == '[object Array]').length !== size) {
-      diffBuilder.record(a, b, objectKeysAreDifferentFormatter);
+      diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
       return false;
     }
 
@@ -374,13 +421,13 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       key = aKeys[i];
       // Deep compare each member
       if (!j$.util.has(b, key)) {
-        diffBuilder.record(a, b, objectKeysAreDifferentFormatter);
+        diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
         result = false;
         continue;
       }
 
       diffBuilder.withPath(key, function() {
-        if(!eq(a[key], b[key], aStack, bStack, customTesters, diffBuilder)) {
+        if(!self.eq_(a[key], b[key], aStack, bStack, customTesters, diffBuilder)) {
           result = false;
         }
       });
@@ -395,7 +442,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     bStack.pop();
 
     return result;
-  }
+  };
 
   function keys(obj, isArray) {
     var allKeys = Object.keys ? Object.keys(obj) :
@@ -431,11 +478,11 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     return typeof obj === 'function';
   }
 
-  function objectKeysAreDifferentFormatter(actual, expected, path) {
+  function objectKeysAreDifferentFormatter(pp, actual, expected, path) {
     var missingProperties = j$.util.objectDifference(expected, actual),
         extraProperties = j$.util.objectDifference(actual, expected),
-        missingPropertiesMessage = formatKeyValuePairs(missingProperties),
-        extraPropertiesMessage = formatKeyValuePairs(extraProperties),
+        missingPropertiesMessage = formatKeyValuePairs(pp, missingProperties),
+        extraPropertiesMessage = formatKeyValuePairs(pp, extraProperties),
         messages = [];
 
     if (!path.depth()) {
@@ -453,7 +500,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     return messages.join('\n');
   }
 
-  function constructorsAreDifferentFormatter(actual, expected, path) {
+  function constructorsAreDifferentFormatter(pp, actual, expected, path) {
     if (!path.depth()) {
       path = 'object';
     }
@@ -461,21 +508,27 @@ getJasmineRequireObj().matchersUtil = function(j$) {
     return 'Expected ' +
       path + ' to be a kind of ' +
       j$.fnNameFor(expected.constructor) +
-      ', but was ' + j$.pp(actual) + '.';
+      ', but was ' + pp(actual) + '.';
   }
 
-  function actualArrayIsLongerFormatter(actual, expected, path) {
+  function actualArrayIsLongerFormatter(pp, actual, expected, path) {
     return 'Unexpected ' +
       path + (path.depth() ? ' = ' : '') +
-      j$.pp(actual) +
+      pp(actual) +
       ' in array.';
   }
 
-  function formatKeyValuePairs(obj) {
+  function formatKeyValuePairs(pp, obj) {
     var formatted = '';
     for (var key in obj) {
-      formatted += '\n    ' + key + ': ' + j$.pp(obj[key]);
+      formatted += '\n    ' + key + ': ' + pp(obj[key]);
     }
     return formatted;
   }
+
+  function isDiffBuilder(obj) {
+    return obj && typeof obj.recordMismatch === 'function';
+  }
+
+  return MatchersUtil;
 };
diff --git a/src/core/matchers/toBe.js b/src/core/matchers/toBe.js
index 3aab9416..8115adc0 100644
--- a/src/core/matchers/toBe.js
+++ b/src/core/matchers/toBe.js
@@ -8,7 +8,7 @@ getJasmineRequireObj().toBe = function(j$) {
    * @example
    * expect(thing).toBe(realThing);
    */
-  function toBe(util) {
+  function toBe(matchersUtil) {
     var tip = ' Tip: To check for deep equality, use .toEqual() instead of .toBe().';
 
     return {
@@ -18,7 +18,7 @@ getJasmineRequireObj().toBe = function(j$) {
         };
 
         if (typeof expected === 'object') {
-          result.message = util.buildFailureMessage('toBe', result.pass, actual, expected) + tip;
+          result.message = matchersUtil.buildFailureMessage('toBe', result.pass, actual, expected) + tip;
         }
 
         return result;
diff --git a/src/core/matchers/toBeInstanceOf.js b/src/core/matchers/toBeInstanceOf.js
index 66b658c1..609b9301 100644
--- a/src/core/matchers/toBeInstanceOf.js
+++ b/src/core/matchers/toBeInstanceOf.js
@@ -12,11 +12,11 @@ getJasmineRequireObj().toBeInstanceOf = function(j$) {
    * expect(3).toBeInstanceOf(Number);
    * expect(new Error()).toBeInstanceOf(Error);
    */
-  function toBeInstanceOf(util, customEqualityTesters) {
+  function toBeInstanceOf(matchersUtil) {
     return {
       compare: function(actual, expected) {
-        var actualType = actual && actual.constructor ? j$.fnNameFor(actual.constructor) : j$.pp(actual),
-            expectedType = expected ? j$.fnNameFor(expected) : j$.pp(expected),
+        var actualType = actual && actual.constructor ? j$.fnNameFor(actual.constructor) : matchersUtil.pp(actual),
+            expectedType = expected ? j$.fnNameFor(expected) : matchersUtil.pp(expected),
             expectedMatcher,
             pass;
 
diff --git a/src/core/matchers/toBeNaN.js b/src/core/matchers/toBeNaN.js
index dcff00a1..7adf5b34 100644
--- a/src/core/matchers/toBeNaN.js
+++ b/src/core/matchers/toBeNaN.js
@@ -7,7 +7,7 @@ getJasmineRequireObj().toBeNaN = function(j$) {
    * @example
    * expect(thing).toBeNaN();
    */
-  function toBeNaN() {
+  function toBeNaN(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {
@@ -17,7 +17,7 @@ getJasmineRequireObj().toBeNaN = function(j$) {
         if (result.pass) {
           result.message = 'Expected actual not to be NaN.';
         } else {
-          result.message = function() { return 'Expected ' + j$.pp(actual) + ' to be NaN.'; };
+          result.message = function() { return 'Expected ' + matchersUtil.pp(actual) + ' to be NaN.'; };
         }
 
         return result;
diff --git a/src/core/matchers/toBeNegativeInfinity.js b/src/core/matchers/toBeNegativeInfinity.js
index ce60a62d..fe2de803 100644
--- a/src/core/matchers/toBeNegativeInfinity.js
+++ b/src/core/matchers/toBeNegativeInfinity.js
@@ -7,7 +7,7 @@ getJasmineRequireObj().toBeNegativeInfinity = function(j$) {
    * @example
    * expect(thing).toBeNegativeInfinity();
    */
-  function toBeNegativeInfinity() {
+  function toBeNegativeInfinity(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {
@@ -17,7 +17,7 @@ getJasmineRequireObj().toBeNegativeInfinity = function(j$) {
         if (result.pass) {
           result.message = 'Expected actual not to be -Infinity.';
         } else {
-          result.message = function() { return 'Expected ' + j$.pp(actual) + ' to be -Infinity.'; };
+          result.message = function() { return 'Expected ' + matchersUtil.pp(actual) + ' to be -Infinity.'; };
         }
 
         return result;
diff --git a/src/core/matchers/toBePositiveInfinity.js b/src/core/matchers/toBePositiveInfinity.js
index c1c41f8e..39cb5e34 100644
--- a/src/core/matchers/toBePositiveInfinity.js
+++ b/src/core/matchers/toBePositiveInfinity.js
@@ -7,7 +7,7 @@ getJasmineRequireObj().toBePositiveInfinity = function(j$) {
    * @example
    * expect(thing).toBePositiveInfinity();
    */
-  function toBePositiveInfinity() {
+  function toBePositiveInfinity(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {
@@ -17,7 +17,7 @@ getJasmineRequireObj().toBePositiveInfinity = function(j$) {
         if (result.pass) {
           result.message = 'Expected actual not to be Infinity.';
         } else {
-          result.message = function() { return 'Expected ' + j$.pp(actual) + ' to be Infinity.'; };
+          result.message = function() { return 'Expected ' + matchersUtil.pp(actual) + ' to be Infinity.'; };
         }
 
         return result;
diff --git a/src/core/matchers/toContain.js b/src/core/matchers/toContain.js
index 440bb4c4..5732447e 100644
--- a/src/core/matchers/toContain.js
+++ b/src/core/matchers/toContain.js
@@ -9,14 +9,12 @@ getJasmineRequireObj().toContain = function() {
    * expect(array).toContain(anElement);
    * expect(string).toContain(substring);
    */
-  function toContain(util, customEqualityTesters) {
-    customEqualityTesters = customEqualityTesters || [];
-
+  function toContain(matchersUtil) {
     return {
       compare: function(actual, expected) {
 
         return {
-          pass: util.contains(actual, expected, customEqualityTesters)
+          pass: matchersUtil.contains(actual, expected)
         };
       }
     };
diff --git a/src/core/matchers/toEqual.js b/src/core/matchers/toEqual.js
index 8697ed67..3a7add38 100644
--- a/src/core/matchers/toEqual.js
+++ b/src/core/matchers/toEqual.js
@@ -8,17 +8,15 @@ getJasmineRequireObj().toEqual = function(j$) {
    * @example
    * expect(bigObject).toEqual({"foo": ['bar', 'baz']});
    */
-  function toEqual(util, customEqualityTesters) {
-    customEqualityTesters = customEqualityTesters || [];
-
+  function toEqual(matchersUtil) {
     return {
       compare: function(actual, expected) {
         var result = {
             pass: false
           },
-          diffBuilder = j$.DiffBuilder();
+          diffBuilder = j$.DiffBuilder({prettyPrinter: matchersUtil.pp});
 
-        result.pass = util.equals(actual, expected, customEqualityTesters, diffBuilder);
+        result.pass = matchersUtil.equals(actual, expected, diffBuilder);
 
         // TODO: only set error message if test fails
         result.message = diffBuilder.getMessage();
diff --git a/src/core/matchers/toHaveBeenCalled.js b/src/core/matchers/toHaveBeenCalled.js
index bf1df2ed..3e6d2601 100644
--- a/src/core/matchers/toHaveBeenCalled.js
+++ b/src/core/matchers/toHaveBeenCalled.js
@@ -11,13 +11,13 @@ getJasmineRequireObj().toHaveBeenCalled = function(j$) {
    * expect(mySpy).toHaveBeenCalled();
    * expect(mySpy).not.toHaveBeenCalled();
    */
-  function toHaveBeenCalled() {
+  function toHaveBeenCalled(matchersUtil) {
     return {
       compare: function(actual) {
         var result = {};
 
         if (!j$.isSpy(actual)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(actual) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(actual) + '.'));
         }
 
         if (arguments.length > 1) {
diff --git a/src/core/matchers/toHaveBeenCalledBefore.js b/src/core/matchers/toHaveBeenCalledBefore.js
index 5c9b7063..293e73ff 100644
--- a/src/core/matchers/toHaveBeenCalledBefore.js
+++ b/src/core/matchers/toHaveBeenCalledBefore.js
@@ -11,14 +11,14 @@ getJasmineRequireObj().toHaveBeenCalledBefore = function(j$) {
    * @example
    * expect(mySpy).toHaveBeenCalledBefore(otherSpy);
    */
-  function toHaveBeenCalledBefore() {
+  function toHaveBeenCalledBefore(matchersUtil) {
     return {
       compare: function(firstSpy, latterSpy) {
         if (!j$.isSpy(firstSpy)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(firstSpy) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(firstSpy) + '.'));
         }
         if (!j$.isSpy(latterSpy)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(latterSpy) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(latterSpy) + '.'));
         }
 
         var result = { pass: false };
diff --git a/src/core/matchers/toHaveBeenCalledTimes.js b/src/core/matchers/toHaveBeenCalledTimes.js
index 282f8776..fa3eef3d 100644
--- a/src/core/matchers/toHaveBeenCalledTimes.js
+++ b/src/core/matchers/toHaveBeenCalledTimes.js
@@ -11,11 +11,11 @@ getJasmineRequireObj().toHaveBeenCalledTimes = function(j$) {
    * @example
    * expect(mySpy).toHaveBeenCalledTimes(3);
    */
-  function toHaveBeenCalledTimes() {
+  function toHaveBeenCalledTimes(matchersUtil) {
     return {
       compare: function(actual, expected) {
         if (!j$.isSpy(actual)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(actual) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(actual) + '.'));
         }
 
         var args = Array.prototype.slice.call(arguments, 0),
diff --git a/src/core/matchers/toHaveBeenCalledWith.js b/src/core/matchers/toHaveBeenCalledWith.js
index 277b33f3..76628b55 100644
--- a/src/core/matchers/toHaveBeenCalledWith.js
+++ b/src/core/matchers/toHaveBeenCalledWith.js
@@ -11,7 +11,7 @@ getJasmineRequireObj().toHaveBeenCalledWith = function(j$) {
    * @example
    * expect(mySpy).toHaveBeenCalledWith('foo', 'bar', 2);
    */
-  function toHaveBeenCalledWith(util, customEqualityTesters) {
+  function toHaveBeenCalledWith(matchersUtil) {
     return {
       compare: function() {
         var args = Array.prototype.slice.call(arguments, 0),
@@ -20,40 +20,40 @@ getJasmineRequireObj().toHaveBeenCalledWith = function(j$) {
           result = { pass: false };
 
         if (!j$.isSpy(actual)) {
-          throw new Error(getErrorMsg('Expected a spy, but got ' + j$.pp(actual) + '.'));
+          throw new Error(getErrorMsg('Expected a spy, but got ' + matchersUtil.pp(actual) + '.'));
         }
 
         if (!actual.calls.any()) {
           result.message = function() {
             return 'Expected spy ' + actual.and.identity + ' to have been called with:\n' +
-              '  ' + j$.pp(expectedArgs) +
+              '  ' + matchersUtil.pp(expectedArgs) +
               '\nbut it was never called.';
           };
           return result;
         }
 
-        if (util.contains(actual.calls.allArgs(), expectedArgs, customEqualityTesters)) {
+        if (matchersUtil.contains(actual.calls.allArgs(), expectedArgs)) {
           result.pass = true;
           result.message = function() {
             return 'Expected spy ' + actual.and.identity + ' not to have been called with:\n' +
-              '  ' + j$.pp(expectedArgs) +
+              '  ' + matchersUtil.pp(expectedArgs) +
               '\nbut it was.';
           };
         } else {
           result.message = function() {
             var prettyPrintedCalls = actual.calls.allArgs().map(function(argsForCall) {
-              return '  ' + j$.pp(argsForCall);
+              return '  ' + matchersUtil.pp(argsForCall);
             });
 
             var diffs = actual.calls.allArgs().map(function(argsForCall, callIx) {
             var diffBuilder = new j$.DiffBuilder();
-              util.equals(argsForCall, expectedArgs, customEqualityTesters, diffBuilder);
+              matchersUtil.equals(argsForCall, expectedArgs, diffBuilder);
               return 'Call ' + callIx + ':\n' +
                 diffBuilder.getMessage().replace(/^/mg, '  ');
             });
 
             return 'Expected spy ' + actual.and.identity + ' to have been called with:\n' +
-              '  ' + j$.pp(expectedArgs) + '\n' + '' +
+              '  ' + matchersUtil.pp(expectedArgs) + '\n' + '' +
               'but actual calls were:\n' +
               prettyPrintedCalls.join(',\n') + '.\n\n' +
               diffs.join('\n');
diff --git a/src/core/matchers/toHaveClass.js b/src/core/matchers/toHaveClass.js
index a2fd7507..efe17f10 100644
--- a/src/core/matchers/toHaveClass.js
+++ b/src/core/matchers/toHaveClass.js
@@ -10,11 +10,11 @@ getJasmineRequireObj().toHaveClass = function(j$) {
    * el.className = 'foo bar baz';
    * expect(el).toHaveClass('bar');
    */
-  function toHaveClass(util, customEqualityTesters) {
+  function toHaveClass(matchersUtil) {
     return {
       compare: function(actual, expected) {
         if (!isElement(actual)) {
-          throw new Error(j$.pp(actual) + ' is not a DOM element');
+          throw new Error(matchersUtil.pp(actual) + ' is not a DOM element');
         }
 
         return {
diff --git a/src/core/matchers/toThrow.js b/src/core/matchers/toThrow.js
index a7e089d6..a471a5d9 100644
--- a/src/core/matchers/toThrow.js
+++ b/src/core/matchers/toThrow.js
@@ -12,7 +12,7 @@ getJasmineRequireObj().toThrow = function(j$) {
    * expect(function() { return 'things'; }).toThrow('foo');
    * expect(function() { return 'stuff'; }).toThrow();
    */
-  function toThrow(util) {
+  function toThrow(matchersUtil) {
     return {
       compare: function(actual, expected) {
         var result = { pass: false },
@@ -37,16 +37,16 @@ getJasmineRequireObj().toThrow = function(j$) {
 
         if (arguments.length == 1) {
           result.pass = true;
-          result.message = function() { return 'Expected function not to throw, but it threw ' + j$.pp(thrown) + '.'; };
+          result.message = function() { return 'Expected function not to throw, but it threw ' + matchersUtil.pp(thrown) + '.'; };
 
           return result;
         }
 
-        if (util.equals(thrown, expected)) {
+        if (matchersUtil.equals(thrown, expected)) {
           result.pass = true;
-          result.message = function() { return 'Expected function not to throw ' + j$.pp(expected) + '.'; };
+          result.message = function() { return 'Expected function not to throw ' + matchersUtil.pp(expected) + '.'; };
         } else {
-          result.message = function() { return 'Expected function to throw ' + j$.pp(expected) + ', but it threw ' +  j$.pp(thrown) + '.'; };
+          result.message = function() { return 'Expected function to throw ' + matchersUtil.pp(expected) + ', but it threw ' +  matchersUtil.pp(thrown) + '.'; };
         }
 
         return result;
diff --git a/src/core/matchers/toThrowError.js b/src/core/matchers/toThrowError.js
index 11c6d746..00f3e69a 100644
--- a/src/core/matchers/toThrowError.js
+++ b/src/core/matchers/toThrowError.js
@@ -16,7 +16,7 @@ getJasmineRequireObj().toThrowError = function(j$) {
    * expect(function() { return 'other'; }).toThrowError(/foo/);
    * expect(function() { return 'other'; }).toThrowError();
    */
-  function toThrowError () {
+  function toThrowError(matchersUtil) {
     return {
       compare: function(actual) {
         var errorMatcher = getMatcher.apply(null, arguments),
@@ -34,7 +34,7 @@ getJasmineRequireObj().toThrowError = function(j$) {
         }
 
         if (!j$.isError_(thrown)) {
-          return fail(function() { return 'Expected function to throw an Error, but it threw ' + j$.pp(thrown) + '.'; });
+          return fail(function() { return 'Expected function to throw an Error, but it threw ' + matchersUtil.pp(thrown) + '.'; });
         }
 
         return errorMatcher.match(thrown);
@@ -97,7 +97,7 @@ getJasmineRequireObj().toThrowError = function(j$) {
             thrownMessage = '';
 
         if (expected) {
-          thrownMessage = ' with message ' + j$.pp(thrown.message);
+          thrownMessage = ' with message ' + matchersUtil.pp(thrown.message);
         }
 
         return thrownName + thrownMessage;
@@ -107,9 +107,9 @@ getJasmineRequireObj().toThrowError = function(j$) {
         if (expected === null) {
           return '';
         } else if (expected instanceof RegExp) {
-          return ' with a message matching ' + j$.pp(expected);
+          return ' with a message matching ' + matchersUtil.pp(expected);
         } else {
-          return ' with message ' + j$.pp(expected);
+          return ' with message ' + matchersUtil.pp(expected);
         }
       }
 
diff --git a/src/core/matchers/toThrowMatching.js b/src/core/matchers/toThrowMatching.js
index bf9be39e..45e3fc85 100644
--- a/src/core/matchers/toThrowMatching.js
+++ b/src/core/matchers/toThrowMatching.js
@@ -10,7 +10,7 @@ getJasmineRequireObj().toThrowMatching = function(j$) {
    * @example
    * expect(function() { throw new Error('nope'); }).toThrowMatching(function(thrown) { return thrown.message === 'nope'; });
    */
-  function toThrowMatching() {
+  function toThrowMatching(matchersUtil) {
     return {
       compare: function(actual, predicate) {
         var thrown;
@@ -40,14 +40,14 @@ getJasmineRequireObj().toThrowMatching = function(j$) {
         }
       }
     };
-  }
 
-  function thrownDescription(thrown) {
-    if (thrown && thrown.constructor) {
-      return j$.fnNameFor(thrown.constructor) + ' with message ' +
-        j$.pp(thrown.message);
-    } else {
-      return j$.pp(thrown);
+    function thrownDescription(thrown) {
+      if (thrown && thrown.constructor) {
+        return j$.fnNameFor(thrown.constructor) + ' with message ' +
+          matchersUtil.pp(thrown.message);
+      } else {
+        return matchersUtil.pp(thrown);
+      }
     }
   }
 
diff --git a/src/core/requireCore.js b/src/core/requireCore.js
index baacd713..e2d7ef87 100644
--- a/src/core/requireCore.js
+++ b/src/core/requireCore.js
@@ -51,13 +51,22 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.buildExpectationResult = jRequire.buildExpectationResult(j$);
     j$.noopTimer = jRequire.noopTimer();
     j$.JsApiReporter = jRequire.JsApiReporter(j$);
-    j$.matchersUtil = jRequire.matchersUtil(j$);
+    j$.asymmetricEqualityTesterArgCompatShim = jRequire.asymmetricEqualityTesterArgCompatShim(
+      j$
+    );
+    j$.makePrettyPrinter = jRequire.makePrettyPrinter(j$);
+    j$.pp = j$.makePrettyPrinter();
+    j$.MatchersUtil = jRequire.MatchersUtil(j$);
+    j$.matchersUtil = new j$.MatchersUtil({
+      customTesters: [],
+      pp: j$.pp
+    });
+
     j$.ObjectContaining = jRequire.ObjectContaining(j$);
     j$.ArrayContaining = jRequire.ArrayContaining(j$);
     j$.ArrayWithExactContents = jRequire.ArrayWithExactContents(j$);
     j$.MapContaining = jRequire.MapContaining(j$);
     j$.SetContaining = jRequire.SetContaining(j$);
-    j$.pp = jRequire.pp(j$);
     j$.QueueRunner = jRequire.QueueRunner(j$);
     j$.ReportDispatcher = jRequire.ReportDispatcher(j$);
     j$.Spec = jRequire.Spec(j$);
@@ -75,6 +84,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.DiffBuilder = jRequire.DiffBuilder(j$);
     j$.NullDiffBuilder = jRequire.NullDiffBuilder(j$);
     j$.ObjectPath = jRequire.ObjectPath(j$);
+    j$.MismatchTree = jRequire.MismatchTree(j$);
     j$.GlobalErrors = jRequire.GlobalErrors(j$);
 
     j$.Truthy = jRequire.Truthy(j$);
diff --git a/src/core/requireInterface.js b/src/core/requireInterface.js
index 012f7303..15a13cd1 100644
--- a/src/core/requireInterface.js
+++ b/src/core/requireInterface.js
@@ -319,6 +319,20 @@ getJasmineRequireObj().interface = function(jasmine, env) {
     return env.addAsyncMatchers(matchers);
   };
 
+  /**
+   * Add a custom object formatter for the current scope of specs.
+   *
+   * _Note:_ This is only callable from within a {@link beforeEach}, {@link it}, or {@link beforeAll}.
+   * @name jasmine.addCustomObjectFormatter
+   * @since 3.6.0
+   * @function
+   * @param {Function} formatter - A function which takes a value to format and returns a string if it knows how to format it, and `undefined` otherwise.
+   * @see custom_object_formatter
+   */
+  jasmine.addCustomObjectFormatter = function(formatter) {
+    return env.addCustomObjectFormatter(formatter);
+  };
+
   /**
    * Get the currently booted mock {Clock} for this Jasmine environment.
    * @name jasmine.clock