javascriptcsswebpackhandlebars.jswebpack-handlebars-loader

Can Webpack proccess nested css in Handlerbars template


i'm working in little project, i use webpack for generate the bundle packs of my js and css code all is fine, but i trying to do a web component that import the css style i read here that i can use a common <link rel="stylesheet" href="yourcss1.css"> inside of template for import the style but the problem with that is when webpack build the bundles can move the css file to dist folder, how can i configure webpack for read the css file nested in template and move to dist folder.

here my config webpack.config.js :

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

const webpackConfig = {
    entry: {
        home: ['@babel/polyfill', './src/js/home/home.js', 
       './src/sass/home/home.scss'],
        signup: ['@babel/polyfill', './src/js/signup/signup.js', './src/sass/signup/signup.scss'],
        me: ['@babel/polyfill', './src/js/me/me.js', './src/sass/me/me.scss']
    },
    devtool: 'source-map',
    output: {
        path: __dirname + '/dist',
        filename: 'js/[name].bundle.js?v=[hash]',
    },
    mode: 'development',
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env'],
                        plugins: ['@babel/plugin-proposal-class-properties', '@babel/plugin-transform-react-jsx']
                    }
                }
            },
            {
                test: /\.html$/,
                use: ['html-loader']
            }, 
            { test: /\.hbs$/,
                loader: "handlebars-loader"
            },
            {
                test: /\.scss$/,
                use: [
                    'to-string-loader',
                    MiniCssExtractPlugin.loader,
                    'css-loader',
                    'sass-loader',
                ]
            },
            {
                test: /\.(gif|png|jpe?g|svg)$/i,
                use: [{
                    loader: 'file-loader',
                    options: {
                        context: '',
                        name: '[hash]-[name].[ext]',
                        outputPath: './img',
                        publicPath: '/img'
                    }
                }]
            },
            {
                test: /\.css$/i,
                use: [{
                    loader: 'file-loader',
                    options: {
                        context: '',
                        name: '[hash]-[name].[ext]',
                        outputPath: './img',
                        publicPath: '/img'
                    }
                }]
            }
        ]
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: "css/[name].css?v=[hash]",
            chunkFilename: "[id].css"
        }),
        new CleanWebpackPlugin('./dist/')
    ],
    resolve: {
        modules: [
            path.resolve('./'),
            path.resolve('./node_modules'),
        ]
    },
    watch: process.env.NODE_ENV !== 'production',
    optimization: {
        splitChunks: {
            cacheGroups: {
                commons: {
                    test: /[\\/]node_modules[\\/]/,
                    name: "vendor",
                    chunks: "initial"
                }
            }
        }
    },
    devServer: {
        // Display only errors to reduce the amount of output.
        stats: "errors-only",
        compress: true,
        contentBase: path.join(__dirname, 'dist'),
        host: process.env.HOST, // Defaults to `localhost`
        port: process.env.PORT, // Defaults to 8080
        open: 'http://localhost:8080/home.html', // Open the page in browser
    },
};
Object.keys(webpackConfig.entry).forEach((file) => {
    webpackConfig.plugins.push(
        new HtmlWebpackPlugin({
            filename: `${file}.html`,
            template: `src/template/${file}.html`,
            chunks: ['vendor', file.replace(/-(\w)/g, (match, c) => c.toUpperCase())]
        })
    );
});
module.exports = webpackConfig;

MagicTable.hbs

<link type="text/css" rel="stylesheet" href="MagicTable.scss">
<div id="message-table" class="table">
    <div class="table-header">
        <div class="row">
            <div class="column col-email"><a href="#">Email</a></div>
            <div class="column col-message"><a href="#">Message</a></div>
            <!--<div class="column col-actions"><a href="#">Actions</a></div>-->
            <div class="column col-status"><a href="#">Estatus</a></div>
        </div>
    </div>
    <div class="table-content">
        <div class="row js-message-row">
            <div class="column col-email"><p>a@gmail.com</p></div>
            <div class="column col-message"><p>I want to play...</p></div>
            <!--<div class="column col-actions">&nbsp;</div>-->
            <div class="column col-status"><span class="status-circle circle-green"></span>
                <p class="green-text">Accepted</p></div>
        </div>
        <div class="row js-message-row">
            <div class="column col-email"><p>a@gmail.com</p></div>
            <div class="column col-message"><p>ASASFARGA</p></div>
            <!--<div class="column col-actions">&nbsp;</div>-->
            <div class="column col-status"><span class="status-circle circle-red"></span>
                <p class="red-text">Rejected</p></div>
        </div>
        <div class="row js-message-row">
            <div class="column col-email"><p>a@gmail.com</p></div>
            <div class="column col-message"><p>ASASFARGA</p></div>
            <div class="column col-status"><span class="status-circle circle-orange"></span>
                <p class="orange-text">Pending</p></div>
        </div>
    </div>
</div>

MagicTable.js

import template from './MagicTable.hbs';
class MagicTable extends HTMLElement {
    constructor() {
        super();
        let shadowRoot = this.attachShadow({mode: 'open'});
        shadowRoot.innerHTML = template({});
    }
}
//export default MagicTable
customElements.define('magic-table', MagicTable);

Solution

  • For process <link rel="stylesheet" href="src/compontent/componentA.css"> nested in the component template and translate to <link rel="stylesheet" href="css/componentA.css">, just need to add these loader after 'handlerbars-loader' that was excract the css files for process.

    {
                test: /\.hbs$/,
                use: [
                    {
                        loader: "handlebars-loader",
                    },
                    {
                        loader: 'extract-loader'
                    },
                    {
                        loader: 'html-loader',
                        options: {
                            attrs: ["img:src", "link:href"],
                        }
                    }]
            }
    

    now for process css link you need to add :

    {
                test: /\.css$/,
                loaders: [
                    {
                        loader: "file-loader",
                        options: {
                            name: "css/[name].css?v=[hash]".toLocaleLowerCase(),
                        },
                    },
                    {
                        loader: "extract-loader",
                        options: {
                            publicPath: "../css",
                        }
                    },
                    {
                        loader: "css-loader",
                    },
                    {
                        loader: 'sass-loader'
                    },
                ],
            },
    

    here complete webpack.config.js

    const path = require('path');
    const HtmlWebpackPlugin = require('html-webpack-plugin');
    const CleanWebpackPlugin = require('clean-webpack-plugin');
    const MiniCssExtractPlugin = require("mini-css-extract-plugin");
    const webpackConfig = {
        entry: {
            home: ['@babel/polyfill', './src/js/home/home.js', './src/sass/home/home.scss'],
            signup: ['@babel/polyfill', './src/js/signup/signup.js', './src/sass/signup/signup.scss'],
            me: ['@babel/polyfill', './src/js/me/me.js', './src/sass/me/me.scss']
        },
        devtool: 'source-map',
        output: {
            path: __dirname + '/dist',
            filename: 'js/[name].bundle.js?v=[hash]',
        },
        mode: 'development',
        module: {
            rules: [
                {
                    test: /\.js$/,
                    exclude: /node_modules/,
                    use: {
                        loader: 'babel-loader',
                        options: {
                            presets: ['@babel/preset-env'],
                            plugins: ['@babel/plugin-proposal-class-properties', '@babel/plugin-transform-react-jsx']
                        }
                    }
                },
                {
                    test: /\.html$/,
                    use: ['html-loader'],
                },
                {
                    test: /\.hbs$/,
                    use: [
                        {
                            loader: "handlebars-loader",
                        },
                        {
                            loader: 'extract-loader'
                        },
                        {
                            loader: 'html-loader',
                            options: {
                                attrs: ["img:src", "link:href"],
                            }
                        }]
                },
                {
                    test: /\.scss$/,
                    exclude: /components/,
                    use: [
                        'to-string-loader',
                        MiniCssExtractPlugin.loader,
                        'css-loader',
                        'sass-loader',
                    ]
                },
                {
                    test: /\.(gif|png|jpe?g|svg)$/i,
                    use: [{
                        loader: 'file-loader',
                        options: {
                            context: '',
                            name: '[hash]-[name].[ext]',
                            outputPath: './img',
                            publicPath: '/img'
                        }
                    }]
                },
                {
                    test: /\.css$/,
                    loaders: [
                        {
                            loader: "file-loader",
                            options: {
                                name: "css/[name].css?v=[hash]".toLocaleLowerCase(),
                            },
                        },
                        {
                            loader: "extract-loader",
                            options: {
                                publicPath: "../css",
                            }
                        },
                        {
                            loader: "css-loader",
                        },
                        {
                            loader: 'sass-loader'
                        },
                    ],
                },
            ]
        },
        plugins: [
            new MiniCssExtractPlugin({
                filename: "css/[name].css?v=[hash]",
                chunkFilename: "[id].css"
            }),
            new CleanWebpackPlugin('./dist/')
        ],
        resolve: {
            modules: [
                path.resolve('./'),
                path.resolve('./node_modules'),
            ]
        },
        watch: process.env.NODE_ENV !== 'production',
        optimization: {
            splitChunks: {
                cacheGroups: {
                    commons: {
                        test: /[\\/]node_modules[\\/]/,
                        name: "vendor",
                        chunks: "initial"
                    }
                }
            }
        },
        devServer: {
            // Display only errors to reduce the amount of output.
            stats: "errors-only",
            compress: true,
            contentBase: path.join(__dirname, 'dist'),
            host: process.env.HOST, // Defaults to `localhost`
            port: process.env.PORT, // Defaults to 8080
            open: 'http://localhost:8080/home.html', // Open the page in browser
        },
    };
    Object.keys(webpackConfig.entry).forEach((file) => {
        webpackConfig.plugins.push(
            new HtmlWebpackPlugin({
                filename: `${file}.html`,
                template: `src/template/${file}.html`,
                chunks: ['vendor', file.replace(/-(\w)/g, (match, c) => c.toUpperCase())]
            })
        );
    });
    
    module.exports = webpackConfig;