js-ignore option

CHANGELOG.md

@@ -10,6 +10,7 @@
   - Also works with `--fix` to automatically fix and report warnings as you work!
 - `build` Added a CLI argument for setting the `basePath` option: `--base-path`.
 - Derives node version check from the package.json.
+- Added `js-ignore` option for skipping files in js minification process.
 
 ## v1.5.7 [10-11-2017]
 - Updated css-slam, bower and other dependencies.

custom_typings/matcher.d.ts

@@ -0,0 +1,4 @@
+declare module 'matcher' {
+		import {matcher} from 'matcher';
+    export = matcher;
+}

package.json

@@ -62,6 +62,7 @@
     "gunzip-maybe": "^1.3.1",
     "html-minifier": "^3.0.1",
     "inquirer": "^1.0.2",
+    "matcher": "^1.0.0",
     "merge-stream": "^1.0.1",
     "mz": "^2.6.0",
     "plylog": "^0.4.0",

src/build/optimize-streams.ts

@@ -30,6 +30,7 @@ const externalHelpersPlugin = require('babel-plugin-external-helpers');
 // entity. Upgrade to proper JS import once compatible .d.ts file is released,
 // or consider writing a custom declaration in the `custom_typings/` folder.
 import File = require('vinyl');
+import matcher = require('matcher');
 
 const logger = logging.getLogger('cli.build.optimize-streams');
 
@@ -40,7 +41,7 @@ export type CSSOptimizeOptions = {
 export interface OptimizeOptions {
   html?: {minify?: boolean};
   css?: {minify?: boolean};
-  js?: {minify?: boolean, compile?: boolean};
+  js?: {minify?: boolean, compile?: boolean, ignore?: string[]};
 }
 ;
 
@@ -77,6 +78,12 @@ export class GenericOptimizeTransform extends Transform {
       return;
     }
 
+    if (this.optimizerOptions.presets && this.optimizerOptions.presets[0].ignore === true) {
+          logger.warn('skip minify for ...' + file.path );
+          callback(null, file);
+          return;
+      }
+
     if (file.contents) {
       try {
         let contents = file.contents.toString();
@@ -211,7 +218,24 @@ export function getOptimizeStreams(options?: OptimizeOptions):
         /\.html$/, new InlineCSSOptimizeTransform({stripWhitespace: true})));
   }
   if (options.js && options.js.minify) {
-    streams.push(gulpif(/\.js$/, new JSDefaultMinifyTransform()));
+    if (options.js.ignore) {
+      const ignores = options.js.ignore;
+
+      function condition(file: File): boolean {
+        for (const ignore of ignores) {
+          if (matcher.isMatch(file.path, ignore) || file.basename === ignore) {
+            logger.warn('skipping minify for ' + file.path );
+            return false;
+          }
+        }
+
+        return /\.js$/.test(file.path);
+      }
+      streams.push(gulpif(condition, new JSDefaultMinifyTransform()));
+    }
+    else {
+      streams.push(gulpif(/\.js$/, new JSDefaultMinifyTransform()));
+    }
   }
 
   return streams;

src/commands/build.ts

@@ -54,6 +54,15 @@ export class BuildCommand implements Command {
       description: 'Compile ES2015 JavaScript features down to ES5 for ' +
           'older browsers.'
     },
+    {
+      name: 'js-ignore',
+      type: Array,
+      description: 'When js-minify is `true`. allow to specify an array of string ' +
+          'for files that should be ignored (not minified).' +
+          'Specify either the exact file name or a wildcard expression (as in https://www.npmjs.com/package/matcher) ' +
+          'that will be matched against the full path.' +
+          'Example: { "minify": true ,"ignore": "*.min.js","firebase-database.js"}'
+    },
     {
       name: 'js-minify',
       type: Boolean,