laravel - Impossible de lire la propriété 'mergeConfig' d'un fichier non défini

Question

Laravel5.1 signale une Cannot read property 'mergeConfig' of undefinederreur

lors de l'exécution de gulp

Message d'erreur

Elixir.webpack.mergeConfig({
                  ^

TypeError: Cannot read property 'mergeConfig' of undefined
    at mix (/home/lethe/work/nxncl/pelissa/gulpfile.js:19:19)
    at global.Elixir (/home/lethe/work/nxncl/pelissa/node_modules/.6.0.0-15@laravel-elixir/dist/index.js:21:5)
    at Object.<anonymous> (/home/lethe/work/nxncl/pelissa/gulpfile.js:16:1)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)

gulpfile.js

const elixir = require('laravel-elixir');
const path = require('path');

require('laravel-elixir-vue-2');

elixir(mix => {
    // Elixir.webpack.config.module.loaders = [];

    Elixir.webpack.mergeConfig({
        resolveLoader: {
            root: path.join(__dirname, 'node_modules'),
        },
        module: {
            loaders: [
                {
                    test: /\.css$/,
                    loader: 'style!css'
                }
            ]
        }
    });

    mix.sass('app.scss')
       .webpack('app.js');
});

webpack.mix.js

const { mix } = require('laravel-mix');

mix.webpackConfig({
    module: {
        rules: [
            {
                test: /\.css$/,
                loader: "style-loader!css-loader"
            },
        ]
    }
});

/*
 |--------------------------------------------------------------------------
 | Mix Asset Management
 |--------------------------------------------------------------------------
 |
 | Mix provides a clean, fluent API for defining some Webpack build steps
 | for your Laravel application. By default, we are compiling the Sass
 | file for the application as well as bundling up all the JS files.
 |
 */

mix.js('resources/assets/js/app.js', 'public/crm/js')
   .sass('resources/assets/sass/app.scss', 'public/crm/css');

package.json

{
  "private": true,
  "scripts": {
    "dev": "node 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 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 node_modules/cross-env/bin/cross-env.js NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
    "production": "node 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",
    "babel-core": "^6.17.0",
    "babel-loader": "^6.2.5",
    "bootstrap-sass": "^3.3.7",
    "css-loader": "^0.25.0",
    "element-ui": "^1.0.0",
    "gulp": "^3.9.1",
    "jquery": "^3.1.0",
    "laravel-elixir": "^6.0.0-15",
    "laravel-elixir-vue-2": "^0.3.0",
    "laravel-elixir-webpack-official": "^1.0.10",
    "laravel-mix": "^0.5.16",
    "lodash": "^4.16.2",
    "style-loader": "^0.13.1",
    "vue": "^2.0.5",
    "vue-loader": "^9.8.0",
    "vue-resource": "^1.0.3"
  }
}

Answer 1

require('laravel-elixir-webpack-official');

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