Merge pull request #4113 from laravel/yarn-fix

Make scripts work with Yarn

package.json

 {
   "private": true,
   "scripts": {
-    "dev": "cross-env NODE_ENV=development webpack --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
-    "watch": "cross-env NODE_ENV=development webpack --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
-    "hot": "cross-env NODE_ENV=development webpack-dev-server --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
-    "production": "cross-env NODE_ENV=production webpack --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
+    "dev": "node_modules/cross-env/bin/cross-env.js NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
+    "watch": "node_modules/cross-env/bin/cross-env.js NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
+    "hot": "node_modules/cross-env/bin/cross-env.js NODE_ENV=development webpack-dev-server --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
+    "production": "node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
   },
   "devDependencies": {
     "axios": "^0.15.2",
     "bootstrap-sass": "^3.3.7",
     "jquery": "^3.1.0",
-    "laravel-mix": "^0.4.0",
+    "laravel-mix": "^0.5.0",
     "lodash": "^4.16.2",
     "vue": "^2.0.1"
   }

webpack.mix.js

-let mix = require('laravel-mix').mix;
+const { mix } = require('laravel-mix');
 
 /*
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