Reset the env state between parallel batches

lib/jasmine-core/jasmine.js

@@ -1641,6 +1641,11 @@ getJasmineRequireObj().Env = function(j$) {
       reportSpecDone
     });
 
+    this.parallelReset = function() {
+      // TODO: ensure that autoCleanClosures was false
+      suiteBuilder.parallelReset();
+    };
+
     /**
      * Executes the specs.
      *
@@ -8365,6 +8370,7 @@ getJasmineRequireObj().Runner = function(j$) {
   class Runner {
     constructor(options) {
       this.topSuite_ = options.topSuite;
+      // TODO use names that read like getters
       this.totalSpecsDefined_ = options.totalSpecsDefined;
       this.focusedRunables_ = options.focusedRunables;
       this.runableResources_ = options.runableResources;
@@ -9623,6 +9629,10 @@ getJasmineRequireObj().Suite = function(j$) {
     this.reportedDone = false;
   };
 
+  Suite.prototype.removeChildren = function() {
+    this.children = [];
+  };
+
   Suite.prototype.addChild = function(child) {
     this.children.push(child);
   };
@@ -9838,6 +9848,12 @@ getJasmineRequireObj().SuiteBuilder = function(j$) {
       this.focusedRunables = [];
     }
 
+    parallelReset() {
+      this.topSuite.removeChildren();
+      this.totalSpecsDefined = 0;
+      this.focusedRunables = [];
+    }
+
     describe(description, definitionFn) {
       ensureIsFunction(definitionFn, 'describe');
       const suite = this.suiteFactory_(description);
@@ -10424,5 +10440,5 @@ getJasmineRequireObj().UserContext = function(j$) {
 };
 
 getJasmineRequireObj().version = function() {
-  return '4.2.0';
+  return '5.0.0-dev';
 };