Add bundleanalyzer config and webpack plugin

.bundle-analyzer.config.js

@@ -0,0 +1,20 @@
+module.exports = {
+	files: [
+		{
+			test: '*.js',
+			maxSize: '200 kB',
+		},
+		{
+			test: '*frontend*.js',
+			maxSize: '60 kB',
+		},
+		{
+			test: '*.css',
+			maxSize: '50kB',
+		},
+		{
+			test: 'vendors*.js',
+			maxSize: '350 kb',
+		},
+	],
+};

.travis.yml

@@ -70,3 +70,4 @@ jobs:
           script:
             - npm install
             - npm run build:ci
+            - cat webpack-stats.json | ./node_modules/.bin/bundle-analyzer --token $BUNDLE_ANALYZER_TOKEN

bin/webpack-helpers.js

@@ -147,7 +147,7 @@ const getEntryConfig = ( main = true, exclude = [] ) => {
 
 const getMainConfig = ( options = {} ) => {
 	let { fileSuffix } = options;
-	const { alias, resolvePlugins = [] } = options;
+	const { alias, resolvePlugins = [], mainPlugins = [] } = options;
 	fileSuffix = fileSuffix ? `-${ fileSuffix }` : '';
 	const resolve = alias
 		? {
@@ -255,6 +255,7 @@ const getMainConfig = ( options = {} ) => {
 			new MiniCssExtractPlugin( {
 				filename: `[name]${ fileSuffix }.css`,
 			} ),
+			...mainPlugins,
 			new MergeExtractFilesPlugin(
 				[
 					`build/editor${ fileSuffix }.js`,
@@ -281,7 +282,7 @@ const getMainConfig = ( options = {} ) => {
 
 const getFrontConfig = ( options = {} ) => {
 	let { fileSuffix } = options;
-	const { alias, resolvePlugins = [] } = options;
+	const { alias, resolvePlugins = [], mainPlugins = [] } = options;
 	fileSuffix = fileSuffix ? `-${ fileSuffix }` : '';
 	const resolve = alias
 		? {
@@ -369,6 +370,7 @@ const getFrontConfig = ( options = {} ) => {
 				requestToExternal,
 				requestToHandle,
 			} ),
+			...mainPlugins,
 		],
 		resolve,
 	};