webpack - 用于 css 图像 url 的 Webpack + Vue 加载器

Question

我在使用 webpack 加载图像 url 时遇到问题。它在开发模式下运行良好。但是在构建生产时，它再也找不到错误的图像：

Failed to load resource: net::ERR_FILE_NOT_FOUND file:///static/flags/4x3/gb.svg

将 Electron 与 vue-loader 一起使用。标志位于静态目录中static/ ，我使用这个样板作为基础https://github.com/bradstewart/electron-boilerplate-vue

文件夹结构：

app/
    components/
    assets/
        less/
        flags/
        fonts/
    App.vue
    main.js
    background.js
build/
dist/
static/
    flags/
        1x1/
            ad.svg
            ae.svg
            ...
        4x3/
            ad.svg
            ae.svg
            ...

webpack.base.conf.js

var fs = require('fs')
var path = require('path')
var webpack = require('webpack')
var config = require('../config')
var projectRoot = path.resolve(__dirname, '../')

module.exports = {
    output: {
        path: config.build.outputRoot,
        filename: '[name].js'
    },

    target: 'node',
    node: {
        __filename: false,
        __dirname: false
    },
    resolve: {
        extensions: ['', '.js', '.vue', '.json'],
        fallback: [path.join(__dirname, '../node_modules')],
        alias: {
            app: path.resolve(__dirname, '../app'),
            '@': path.resolve(__dirname, '../app'),
            'vue': 'vue/dist/vue.common.js'
        }
    },

    module: {
        preLoaders: [
            {
                test: /\.vue$/,
                loader: 'eslint',
                include: projectRoot,
                exclude: /node_modules/
            },
            {
                test: /\.js$/,
                loader: 'eslint',
                include: projectRoot,
                exclude: /vue-devtools|node_modules/
            }
        ],
        loaders: [
            {
                test: /\.vue$/,
                loader: 'vue-loader',
                options: {
                    loaders: {
                        less: 'style-loader!css-loader!less-loader'
                    }
                }
            },            
            {
                test: /\.js$/,
                loader: 'babel',
                include: projectRoot,
                exclude: /vue-devtools|node_modules/
            },
            {
                test: /\.json$/,
                loader: 'json'
            },
            {
                test: /\.html$/,
                loader: 'vue-html'
            },
            {
                test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
                loader: 'url',
                query: {
                    limit: 10000,
                    name: path.join(config.build.assetsSubDirectory, '[name].[ext]')
                }
            },
            {
                test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
                loader: 'url',
                query: {
                    limit: 10000,
                    name: path.join(config.build.assetsSubDirectory, 'fonts/[name].[ext]')
                }
            }
        ]
    },
    plugins: [
        new webpack.ExternalsPlugin('commonjs2', [
            'desktop-capturer',
            'electron',
            'ipc',
            'ipc-renderer',
            'native-image',
            'remote',
            'web-frame',
            'clipboard',
            'crash-reporter',
            'screen',
            'shell'
        ]),
    ],
    vue: {
        loaders: {
            scss: 'style-loader!css-loader!sass-loader',
            less: 'style-loader!css-loader!less-loader'
        }
    },
    eslint: {
        formatter: require('eslint-friendly-formatter')
    },
    externals: ['ajv', 'acorn']
}

webpack.prod.conf.js

var path = require('path')
var webpack = require('webpack')
var merge = require('webpack-merge')
var ExtractTextPlugin = require('extract-text-webpack-plugin')
var HtmlWebpackPlugin = require('html-webpack-plugin')
var CopyWebpackPlugin = require('copy-webpack-plugin')
var config = require('../config')
var baseWebpackConfig = require('./webpack.base.conf')

module.exports = merge(baseWebpackConfig, {
    entry: {
        app: './app/main.js',
        secondary: './app/secondary.js',
        background: './app/background.js'
    },
    devtool: config.build.productionSourceMap ? '#source-map' : false,
    output: {
        filename: '[name].js',
        chunkFilename: '[id].js'
    },
    vue: { },
    plugins: [
        new CopyWebpackPlugin([
            { from: './app/package.json', to: '.' },
            { from: './static', to: 'static' }
        ]),
        new webpack.DefinePlugin({
            'process.env': {
                NODE_ENV: '"production"'
            }
        }),
        new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false
            }
        }),
        new webpack.optimize.OccurenceOrderPlugin(),
        new ExtractTextPlugin(path.join(config.build.assetsSubDirectory, '[name].css')),
        new HtmlWebpackPlugin({
            filename: 'main.html',
            template: './app/main.html',
            excludeChunks: ['background', 'secondary'],
            inject: true,
            minify: {
                removeComments: true,
                collapseWhitespace: true,
                removeAttributeQuotes: true
            }
        }),
        new HtmlWebpackPlugin({
            filename: 'secondary.html',
            template: './app/secondary.html',
            excludeChunks: ['background', 'app'],
            inject: true,
            minify: {
                removeComments: true,
                collapseWhitespace: true,
                removeAttributeQuotes: true
            }
        })
    ]
})

style.less

@flag-icon-css-path: '/static/flags';
@flag-icon-rect-path: '/4x3';
@flag-icon-square-path: '/1x1';

.flag-icon(@country) {
    .flag-icon-@{country} {
        background-image: ~"url('@{flag-icon-css-path}@{flag-icon-rect-path}/@{country}.svg')";

        &.flag-icon-squared {
            background-image: ~"url('@{flag-icon-css-path}@{flag-icon-square-path}/@{country}.svg')";
        }
    }
}

.flag-icon(ad);
.flag-icon(ae);
.flag-icon(af);
/*
....
*/