Merge pull request #51 from kimroen/sn/add-project-targets

Pass through config/targets to autoprefixer

README.md

@@ -10,12 +10,14 @@ ember install ember-cli-autoprefixer
 ```
 
 ## Options
-Add the target browsers to your package.json as per https://github.com/browserslist/browserslist#readme or use a `.browserslistrc` file.
+This addon first consumes your browser list config from `config/targets.js`.  This is the browser list for Babel.
 
-You can manually configure what browsers to target and other options by
-specifying them in your `ember-cli-build.js` (or `Brocfile.js`). An example:
+You can manually configure what browsers to target for autoprefixer only.  Add the target browsers to your package.json
+as per https://github.com/browserslist/browserslist#readme, add a `.browserslistrc` file, or configure `overrideBrowsersList`
+in `ember-cli-build.js`.
 
 ```js
+// ember-cli-build.js
 var app = new EmberApp(defaults, {
   autoprefixer: {
     overrideBrowserslist: ['IE11'],

index.js

@@ -1,6 +1,7 @@
 'use strict';
 
 const Autoprefixer = require('broccoli-autoprefixer');
+const fs = require('fs');
 
 const treesToProcess = ['css', 'less', 'styl', 'scss', 'sass'];
 
@@ -15,10 +16,22 @@ module.exports = {
 
     this._super.included.apply(this, arguments);
 
+    var browserOptions = {};
+
+    var root = this.project.root;
+    var hasRCFile = fs.existsSync(`${root}/.browserslistrc`);
+    var hasPkgBrowserList = !!this.project.pkg.browserslist;
+
+    if (!hasRCFile && !hasPkgBrowserList) {
+      var appOptions = this.app.options || {};
+      browserOptions.overrideBrowsersList = appOptions['autoprefixer'] && appOptions['autoprefixer'].overrideBrowsersList;
+    }
+
     this.options = Object.assign(
       {
         enabled: true
       },
+      browserOptions,
       this.app.options.autoprefixer || {}
     );