Allow to add extra plugin

Author: alOneh

index.js

@@ -176,6 +176,21 @@ module.exports = {
         return this;
     },
 
+    /**
+     * Add a plugin to the sets of plugins already registered by Encore
+     *
+     * For example, if you want to add the "webpack.IgnorePlugin()", then:
+     *      .addPlugin(new webpack.IgnorePlugin(requestRegExp, contextRegExp))
+     *
+     * @param {string} plugin
+     * @return {exports}
+     */
+    addPlugin(plugin) {
+        webpackConfig.addPlugin(plugin);
+
+        return this;
+    },
+
     /**
      * When enabled, files are rendered with a hash based
      * on their contents (e.g. main.a2b61cc.js)

lib/WebpackConfig.js

@@ -167,6 +167,10 @@ class WebpackConfig {
         this.loaders.push(loader);
     }
 
+    addPlugin(plugin) {
+        this.plugins.push(plugin);
+    }
+
     enableVersioning(enabled = true) {
         this.useVersioning = enabled;
     }

test/WebpackConfig.js

@@ -300,4 +300,17 @@ describe('WebpackConfig object', () => {
             expect(config.loaders).to.deep.equals([{ 'test': /\.custom$/, 'loader': 'custom-loader' }]);
         });
     });
+
+    describe('addPlugin', () => {
+        it('extends the current registered plugins', () => {
+            const config = createConfig();
+            const nbOfPlugins = config.plugins.length;
+
+            expect(nbOfPlugins).to.equal(0);
+
+            config.addPlugin(new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/));
+
+            expect(config.plugins.length).to.equal(1);
+        });
+    });
 });