Merge pull request salesforce#1457 from interactivellama/prefer-object-spread

Prefer object spread eslint rule

Author: interactivellama

.eslintrc.json

@@ -12,7 +12,7 @@
 			"modules": true
 		}
 	},
-	"plugins": ["filenames", "json"],
+	"plugins": ["filenames", "json", "prefer-object-spread"],
 	"env": {
 		"browser": true
 	},
@@ -112,6 +112,8 @@
 		"no-tabs": "off",
 		// _ is not really private.
 		"no-underscore-dangle": ["error", { "allowAfterThis": true }],
+		//
+		"prefer-object-spread/prefer-object-spread": [2, "always"],
 		// Increases readability of function name
 		"space-before-function-paren": [2, "always"],
 

docs/browser-compatibility.md

@@ -10,7 +10,6 @@ The eventual goal is to remove all polyfills (such as [lodash](https://lodash.co
 
 * `Array.prototype.findIndex` - use [core-js library](https://github.com/zloirock/core-js#commonjs)
 * `Element.classList` - use [classList.js](https://github.com/eligrey/classList.js)
-* `Object.assign` - use [core-js library](https://github.com/zloirock/core-js#commonjs)
 
 ### Internet Explorer 11 Support
 

package.json

@@ -139,11 +139,11 @@
 		"async": "^2.0.0-rc.5",
 		"babel-core": "^7.0.0-bridge.0",
 		"babel-eslint": "^8.2.3",
+		"babel-jest": "^23.0.1",
 		"babel-loader": "^8.0.0-beta.3",
 		"babel-plugin-import-noop": "^1.0.1",
 		"babel-plugin-istanbul": "^4.1.6",
 		"babel-plugin-root-import": "^5.1.0",
-		"babel-jest": "^23.0.1",
 		"basic-auth": "^1.0.4",
 		"chai": "^4.0.1",
 		"chai-enzyme": "^0.8.0",
@@ -159,6 +159,7 @@
 		"eslint-plugin-import": "^2.11.0",
 		"eslint-plugin-json": "^1.2.0",
 		"eslint-plugin-jsx-a11y": "^6.0.3",
+		"eslint-plugin-prefer-object-spread": "^1.2.1",
 		"eslint-plugin-react": "^7.7.0",
 		"express": "^4.15.5",
 		"file-loader": "^0.11.0",

webpack.config.dist.js

@@ -9,6 +9,7 @@ const license = fs.readFileSync('./LICENSE.txt', 'utf8');
 
 const baseConfig = require('./webpack.config');
 
+// eslint-disable-next-line prefer-object-spread/prefer-object-spread
 const config = Object.assign({}, baseConfig, {
 	externals: {
 		react: {