Remove complied JS from repo; compile JS when doing build

.gitignore

@@ -4,3 +4,4 @@ build
 node_modules
 wiki
 amp.zip
+**/*-compiled.js

Gruntfile.js

@@ -100,9 +100,10 @@ module.exports = function( grunt ) {
 			versionAppend = commitHash + '-' + new Date().toISOString().replace( /\.\d+/, '' ).replace( /-|:/g, '' );
 
 			paths = lsOutput.trim().split( /\n/ ).filter( function( file ) {
-				return ! /^(\.|bin|([^/]+)+\.(md|json|xml)|Gruntfile\.js|tests|wp-assets|dev-lib|readme\.md|composer\..*)/.test( file );
+				return ! /^(blocks|\.|bin|([^/]+)+\.(md|json|xml)|Gruntfile\.js|tests|wp-assets|dev-lib|readme\.md|composer\..*)/.test( file );
 			} );
 			paths.push( 'vendor/autoload.php' );
+			paths.push( 'assets/js/*-compiled.js' );
 			paths.push( 'vendor/composer/**' );
 			paths.push( 'vendor/sabberworm/php-css-parser/lib/**' );
 

contributing.md

@@ -16,6 +16,10 @@ To install the `pre-commit` hook, do `bash dev-lib/install-pre-commit-hook.sh`.
 
 Note that pull requests will be checked against [WordPress-Coding-Standards](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards) with PHPCS, and for JavaScript linting is done with ESLint and (for now) JSCS and JSHint.
 
+## Modifying JavaScript for Blocks
+
+To edit JavaScript code which is built/complied, run `npm run dev` to watch the files which Webpack will build. These complied files are excluded from version control but they are included in the release packages.
+
 ## Creating a Plugin Build
 
 To create a build of the plugin for installing in WordPress as a ZIP package, do:

package.json

@@ -31,7 +31,7 @@
  },
  "main": "blocks/index.js",
  "scripts": {
-  "build": "grunt build",
+  "build": "cross-env BABEL_ENV=default webpack; grunt build",
   "deploy": "grunt deploy",
   "dev": "cross-env BABEL_ENV=default webpack --watch"
  }