用.NET核心角模板中的WebPack编译Bootstrap SCS

Question

我正在尝试使用Bootstrap SCSS文件而不是CSS文件，以便我可以覆盖Bootstrap变量。我可以使用CSS文件来获得加载的样式，但不能使用SCSS文件。我正在通过Visual Studio 2017 Angular模板创建的.NET核心角度项目。

我在这里尝试了答案，但没有运气。

SPA模板.NET Core 2.0 Angular 4 WebPack 2使用SASS NOT BOOSTRAP 4 CSS

这是我对它应该如何工作的理解：

• webpack.config.vendor.js文件生成vendor.js and vendor.css。我了解供应商js与主-client.js保持分开，因此只有在供应商依赖性变化，改善构建过程并在需要时进行生产时只能进行缓存。

• 在我想编译Bootstrap的SCSS文件而不是使用其CSS文件的情况下，我希望在webpack.config.vendor.js中删除bootstrap.css reference，而添加了SCSS规则到webpack.config.js。

• webpack.config.js生成一个主-client.js文件，其中包含Angular组件所需的所有JS代码。通过将SCSS规则插入配置中，它还应将Bootstrap SCSS文件编译为通过JavaScript在HTML标头中注入的样式。

• 我的应用程序中的styles.scss文件由webpack.config.js处理，应该具有@Import" 〜bootstrap/scss/bootstrap"，以便构建Bootstrap SCSS文件。最终，我也会导入我自己的_custom.scss文件，其中覆盖变量。

我的理解正确吗？

另外，我不知道是什么让WebPack.config.js除了我的style.scss file（已经导入bootstrap.scss）之外，无法在节点模块文件夹下处理Bootstrap SCSS文件。这是我需要在webpack.js中定义的吗？

这是我的webpack.config.js。SCSS规则直接来自Bootstrap文档。

const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const AotPlugin = require('@ngtools/webpack').AotPlugin;
const CheckerPlugin = require('awesome-typescript-loader').CheckerPlugin;
module.exports = (env) => {
    // Configuration in common to both client-side and server-side bundles
    const isDevBuild = !(env && env.prod);
    const sharedConfig = {
        stats: { modules: false },
        context: __dirname,
        resolve: { extensions: ['.js', '.ts'] },
        output: {
            filename: '[name].js',
            publicPath: 'dist/' // Webpack dev middleware, if enabled, handles requests for this URL prefix
        },
        module: {
            rules: [
                { test: /.ts$/, include: /ClientApp/, use: isDevBuild ? ['awesome-typescript-loader?silent=true', 'angular2-template-loader'] : '@ngtools/webpack' },
                { test: /.html$/, use: 'html-loader?minimize=false' },
                { test: /.css$/, use: ['to-string-loader', isDevBuild ? 'css-loader' : 'css-loader?minimize'] },
                { test: /.(png|jpg|jpeg|gif|svg)$/, use: 'url-loader?limit=25000' },
                {
                    test: /.(scss)$/,
                    use: [{
                        loader: 'style-loader', // inject CSS to page
                    }, {
                        loader: 'css-loader', // translates CSS into CommonJS modules
                    }, {
                        loader: 'postcss-loader', // Run post css actions
                        options: {
                            plugins: function () { // post css plugins, can be exported to postcss.config.js
                                return [
                                    require('precss'),
                                    require('autoprefixer')
                                ];
                            }
                        }
                    }, {
                        loader: 'sass-loader' // compiles SASS to CSS
                    }]
                },
            ]
        },
        plugins: [new CheckerPlugin()]
    };
    // Configuration for client-side bundle suitable for running in browsers
    const clientBundleOutputDir = './wwwroot/dist';
    const clientBundleConfig = merge(sharedConfig, {
        entry: { 'main-client': './ClientApp/boot.browser.ts' },
        output: { path: path.join(__dirname, clientBundleOutputDir) },
        plugins: [
            new webpack.DllReferencePlugin({
                context: __dirname,
                manifest: require('./wwwroot/dist/vendor-manifest.json')
            }),
            new webpack.ProvidePlugin({
                $: 'jquery',
                jQuery: 'jquery',
                'window.jQuery': 'jquery',
                Popper: ['popper.js', 'default']
                // In case you imported plugins individually, you must also require them here:
                //Util: "exports-loader?Util!bootstrap/js/dist/util",
                //Dropdown: "exports-loader?Dropdown!bootstrap/js/dist/dropdown"
            })
        ].concat(isDevBuild ? [
            // Plugins that apply in development builds only
            new webpack.SourceMapDevToolPlugin({
                filename: '[file].map', // Remove this line if you prefer inline source maps
                moduleFilenameTemplate: path.relative(clientBundleOutputDir, '[resourcePath]') // Point sourcemap entries to the original file locations on disk
            })
        ] : [
                // Plugins that apply in production builds only
                new webpack.optimize.UglifyJsPlugin(),
                new AotPlugin({
                    tsConfigPath: './tsconfig.json',
                    entryModule: path.join(__dirname, 'ClientApp/app/app-browser.module#AppModule'),
                    exclude: ['./**/*.server.ts']
                })
            ])
    });
    // Configuration for server-side (prerendering) bundle suitable for running in Node
    const serverBundleConfig = merge(sharedConfig, {
        resolve: { mainFields: ['main'] },
        entry: { 'main-server': './ClientApp/boot.server.ts' },
        plugins: [
            new webpack.DllReferencePlugin({
                context: __dirname,
                manifest: require('./ClientApp/dist/vendor-manifest.json'),
                sourceType: 'commonjs2',
                name: './vendor'
            })
        ].concat(isDevBuild ? [] : [
            // Plugins that apply in production builds only
            new AotPlugin({
                tsConfigPath: './tsconfig.json',
                entryModule: path.join(__dirname, 'ClientApp/app/app-server.module#AppModule'),
                exclude: ['./**/*.browser.ts']
            })
        ]),
        output: {
            libraryTarget: 'commonjs',
            path: path.join(__dirname, './ClientApp/dist')
        },
        target: 'node',
        devtool: 'inline-source-map'
    });
    return [clientBundleConfig, serverBundleConfig];
};

这是我的webpack.config.vendor.js。我已经评论了bootstrap/dist/css/bootstrap.css

//Run from Command Line: webpack --config webpack.config.vendor.js
const path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const merge = require('webpack-merge');
const treeShakableModules = [
    '@angular/animations',
    '@angular/common',
    '@angular/compiler',
    '@angular/core',
    '@angular/forms',
    '@angular/http',
    '@angular/platform-browser',
    '@angular/platform-browser-dynamic',
    '@angular/router',
    'zone.js',
];
const nonTreeShakableModules = [
    'bootstrap',
    //'bootstrap/dist/css/bootstrap.css',
    'ag-grid/dist/styles/ag-grid.css',
    'ag-grid/dist/styles/ag-theme-blue.css',
    'es6-promise',
    'es6-shim',
    'event-source-polyfill',
    'jquery',
];
const allModules = treeShakableModules.concat(nonTreeShakableModules);
module.exports = (env) => {
    const extractCSS = new ExtractTextPlugin('vendor.css');
    const isDevBuild = !(env && env.prod);
    const sharedConfig = {
        stats: { modules: false },
        resolve: { extensions: ['.js'] },
        module: {
            rules: [
                { test: /.(png|woff|woff2|eot|ttf|svg)(?|$)/, use: 'url-loader?limit=100000' }
            ]
        },
        output: {
            publicPath: 'dist/',
            filename: '[name].js',
            library: '[name]_[hash]'
        },
        plugins: [
            new webpack.ProvidePlugin({ $: 'jquery', jQuery: 'jquery' }), // Maps these identifiers to the jQuery package (because Bootstrap expects it to be a global variable)
            new webpack.ContextReplacementPlugin(/@angularb.*b(bundles|linker)/, path.join(__dirname, './ClientApp')), // Workaround for https://github.com/angular/angular/issues/11580
            new webpack.ContextReplacementPlugin(/angular(\|/)core(\|/)@angular/, path.join(__dirname, './ClientApp')), // Workaround for https://github.com/angular/angular/issues/14898
            new webpack.IgnorePlugin(/^vertx$/) // Workaround for https://github.com/stefanpenner/es6-promise/issues/100
        ]
    };
    const clientBundleConfig = merge(sharedConfig, {
        entry: {
            // To keep development builds fast, include all vendor dependencies in the vendor bundle.
            // But for production builds, leave the tree-shakable ones out so the AOT compiler can produce a smaller bundle.
            vendor: isDevBuild ? allModules : nonTreeShakableModules
        },
        output: { path: path.join(__dirname, 'wwwroot', 'dist') },
        module: {
            rules: [
                { test: /.css(?|$)/, use: extractCSS.extract({ use: isDevBuild ? 'css-loader' : 'css-loader?minimize' }) }
            ]
        },
        plugins: [
            extractCSS,
            new webpack.DllPlugin({
                path: path.join(__dirname, 'wwwroot', 'dist', '[name]-manifest.json'),
                name: '[name]_[hash]'
            })
        ].concat(isDevBuild ? [] : [
            new webpack.optimize.UglifyJsPlugin()
        ])
    });
    const serverBundleConfig = merge(sharedConfig, {
        target: 'node',
        resolve: { mainFields: ['main'] },
        entry: { vendor: allModules.concat(['aspnet-prerendering']) },
        output: {
            path: path.join(__dirname, 'ClientApp', 'dist'),
            libraryTarget: 'commonjs2',
        },
        module: {
            rules: [{ test: /.css(?|$)/, use: ['to-string-loader', isDevBuild ? 'css-loader' : 'css-loader?minimize'] }]
        },
        plugins: [
            new webpack.DllPlugin({
                path: path.join(__dirname, 'ClientApp', 'dist', '[name]-manifest.json'),
                name: '[name]_[hash]'
            })
        ]
    });
    return [clientBundleConfig, serverBundleConfig];
}

Answer 1

当然，一旦我发布问题，我就会弄清楚。

问题是我需要在入口点模块boot.browser.ts中导入样式。这也回答了有关WebPack如何仅编译样式的问题