Include only specified files in the NPM package

.gitignore

@@ -25,3 +25,4 @@ build/
 dist
 nbproject/
 *.iml
+.envrc

.npmignore

@@ -1,30 +0,0 @@
-dist/
-grunt/
-node_modules
-pkg/
-release_notes/
-spec/
-src/
-Gemfile
-Gemfile.lock
-Rakefile
-jasmine-core.gemspec
-.bundle/
-.gitignore
-.gitmodules
-.idea
-.jshintrc
-.rspec
-.sass-cache/
-.circleci
-scripts/
-*.sh
-*.py
-Gruntfile.js
-lib/jasmine-core.rb
-lib/jasmine-core/boot/
-lib/jasmine-core/spec
-lib/jasmine-core/version.rb
-lib/jasmine-core/*.py
-sauce_connect.log
-ci.js

package.json

@@ -25,6 +25,13 @@
   "description": "Official packaging of Jasmine's core files for use by Node.js projects.",
   "homepage": "https://jasmine.github.io",
   "main": "./lib/jasmine-core.js",
+  "files": [
+    "MIT.LICENSE",
+    "README.md",
+    "images/*.{png,svg}",
+    "lib/**/*.{js,css}",
+    "package.json"
+  ],
   "devDependencies": {
     "ejs": "^2.5.5",
     "eslint": "^6.8.0",

spec/npmPackage/npmPackageSpec.js

@@ -108,4 +108,56 @@ describe('npm package', function() {
       false
     );
   });
+
+  it('does not have any unexpected files in the root directory', function() {
+    var files = fs.readdirSync(this.tmpDir);
+    expect(files).toEqual(['package']);
+  });
+
+  it('does not have any unexpected files in the package directory', function() {
+    var files = fs.readdirSync(path.resolve(this.tmpDir, 'package'));
+    files.sort();
+    expect(files).toEqual([
+      'MIT.LICENSE',
+      'README.md',
+      'images',
+      'lib',
+      'package.json'
+    ]);
+  });
+
+  it('only has images in the images dir', function() {
+    var files = fs.readdirSync(path.resolve(this.tmpDir, 'package/images')),
+      i;
+
+    for (i = 0; i < files.length; i++) {
+      expect(files[i]).toMatch(/\.(svg|png)$/);
+    }
+  });
+
+  it('only has JS and CSS files in the lib dir', function() {
+    var files = [],
+      i;
+
+    function getFiles(dir) {
+      var dirents = fs.readdirSync(dir, { withFileTypes: true }),
+        j;
+
+      for (j = 0; j < dirents.length; j++) {
+        dirent = dirents[j];
+
+        if (dirent.isDirectory()) {
+          getFiles(path.resolve(dir, dirent.name));
+        } else {
+          files.push(path.resolve(dir, dirent.name));
+        }
+      }
+    }
+
+    getFiles(path.resolve(this.tmpDir, 'package/lib'));
+
+    for (i = 0; i < files.length; i++) {
+      expect(files[i]).toMatch(/\.(js|css)$/);
+    }
+  });
 });