bug #619 Fix createSharedEntry(...) when using query string versioning strategy (Lyrkan)

This PR was merged into the master branch.

Discussion
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Fix createSharedEntry(...) when using query string versioning strategy

This PR fixes #618 by correctly filtering the JS files of the shared entry (in the `SharedEntryConcatPlugin`) when versioning is handled in a query string.

Commits
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0f63369 Fix createSharedEntry(...) when using query string versioning strategy

Author: weaverryan

lib/utils/get-file-extension.js

@@ -0,0 +1,19 @@
+/*
+ * This file is part of the Symfony Webpack Encore package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+'use strict';
+
+const path = require('path');
+const url = require('url');
+
+module.exports = function(filename) {
+    const parsedFilename = new url.URL(filename, 'http://foo');
+    const extension = path.extname(parsedFilename.pathname);
+    return extension ? extension.slice(1) : '';
+};

lib/webpack/shared-entry-concat-plugin.js

@@ -10,6 +10,7 @@
 'use strict';
 
 const sharedEntryTmpName = require('../utils/sharedEntryTmpName');
+const getFileExtension = require('../utils/get-file-extension');
 const RawSource = require('webpack-sources/lib/RawSource');
 
 function SharedEntryConcatPlugin(sharedEntryName) {
@@ -26,7 +27,8 @@ function getChunkFilename(compilation, chunkName) {
     }
 
     const jsFiles = chunk.files.filter(filename => {
-        return /\.js$/.test(filename) && !additionalChunkAssets.includes(filename);
+        const fileExtension = getFileExtension(filename);
+        return /^js$/.test(fileExtension) && !additionalChunkAssets.includes(filename);
     });
 
     if (jsFiles.length !== 1) {

test/functional.js

@@ -854,7 +854,7 @@ describe('Functional tests using webpack', function() {
             });
         });
 
-        it('createdSharedEntry() works with versioning', (done) => {
+        it('createdSharedEntry() works with default versioning strategy', (done) => {
             const config = createWebpackConfig('www/build', 'dev');
             config.setPublicPath('/build');
             config.addEntry('main', ['./js/no_require', './js/code_splitting', './js/arrow_function', './js/print_to_app']);
@@ -878,6 +878,33 @@ describe('Functional tests using webpack', function() {
             });
         });
 
+        it('createdSharedEntry() works with query string versioning strategy', (done) => {
+            const config = createWebpackConfig('www/build', 'dev');
+            config.setPublicPath('/build');
+            config.addEntry('main', ['./js/no_require', './js/code_splitting', './js/arrow_function', './js/print_to_app']);
+            config.addEntry('other', ['./js/no_require', './css/h1_style.css']);
+            config.createSharedEntry('shared', './js/shared_example');
+            config.configureFilenames({
+                js: '[name].js?[contenthash:8]',
+                css: '[name].css?[contenthash:8]',
+            });
+
+            testSetup.runWebpack(config, (webpackAssert) => {
+                testSetup.requestTestPage(
+                    path.join(config.getContext(), 'www'),
+                    [
+                        convertToManifestPath('build/runtime.js', config),
+                        convertToManifestPath('build/shared.js', config),
+                    ],
+                    (browser) => {
+                        // assert that the javascript brought into shared is executed
+                        browser.assert.text('#app', 'Welcome to Encore!');
+                        done();
+                    }
+                );
+            });
+        });
+
         it('createdSharedEntry() works with source maps enabled', (done) => {
             const config = createWebpackConfig('www/build', 'dev');
             config.setPublicPath('/build');

test/utils/get-file-extension.js

@@ -0,0 +1,42 @@
+/*
+ * This file is part of the Symfony Webpack Encore package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+'use strict';
+
+const expect = require('chai').expect;
+const getFileExtension = require('../../lib/utils/get-file-extension');
+
+describe('get-file-extension', () => {
+    it('returns the extension of simple filenames', () => {
+        expect(getFileExtension('foo.js')).to.equal('js');
+        expect(getFileExtension('foo-bar.txt')).to.equal('txt');
+        expect(getFileExtension('foo.bar.baz')).to.equal('baz');
+    });
+
+    it('returns an empty string for files with no extension', () => {
+        expect(getFileExtension('foo')).to.equal('');
+        expect(getFileExtension('foo-bar')).to.equal('');
+    });
+
+    it('returns the extension of a file from an absolute path', () => {
+        expect(getFileExtension('/home/foo/bar.js')).to.equal('js');
+        expect(getFileExtension('C:\\home\\foo\\bar.js')).to.equal('js');
+    });
+
+    it('returns the extension from an URI', () => {
+        expect(getFileExtension('http://localhost/foo.js')).to.equal('js');
+        expect(getFileExtension('file://localhost/foo/bar.txt')).to.equal('txt');
+        expect(getFileExtension('https://localhost:8080/foo.bar.baz')).to.equal('baz');
+    });
+
+    it('works with query strings', () => {
+        expect(getFileExtension('http://localhost/foo.js?abcd')).to.equal('js');
+        expect(getFileExtension('foo.txt?bar=baz&baz=bar')).to.equal('txt');
+    });
+});