Webpack 4: mini-css-extract-plugin + file-loader not loading assets

Question

I'm trying to move assets (images and fonts) used in one of my .scssfiles, but it seems that they get ignored:

This is my .scss file:

@font-face {
    font-family: 'myfont';
    src: url('../../assets/fonts/myfont.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
}

body {
    color: red;
    font-family: 'myfont';
    background: url('../../assets/images/bg.jpg');
}

And this is my webpack.config.js:

const path = require('path');
const { CheckerPlugin } = require('awesome-typescript-loader');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

module.exports = {
    target: 'node',
    entry: path.resolve(__dirname, 'server.tsx'),
    output: {
        filename: 'server_bundle.js',
        path: path.resolve(__dirname, 'build'),
        publicPath: '/build'
    },
    resolve: {
        extensions: ['.ts', '.tsx', '.js', '.jsx']
    },
    module: {
        rules: [{
                test: /\.(tsx|ts)?$/,
                loader: 'awesome-typescript-loader',
                options: {
                    jsx: 'react'
                }
            },
            {
                test: /\.(scss|sass|css)$/,                
                use: [
                    MiniCssExtractPlugin.loader,
                    { loader: 'css-loader', options: { url: false, sourceMap: true } },
                    { loader: 'sass-loader', options: { sourceMap: true } },                    
                ]
            },
            {
                test: /\.(png|svg|jpg|jpeg|gif)$/,
                loader: 'file-loader',
                options: { outputPath: 'public/images' }
            },
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/,
                loader: 'file-loader',
                options: { outputPath: 'public/fonts' }
            }
        ]
    },
    plugins: [
        new CheckerPlugin(),
        new MiniCssExtractPlugin({
            filename: 'public/styles_bundle.css',
            chunkFilename: "public/styles/[id].css"
        })
    ]
}

I'm getting this .css file in my browser as the output (Note the name of the image):

body {
  color: red;
  background: url("../../assets/images/myimage.jpg"); 
}

And in my public directory I get this:

public/
    styles_bundle.css

There are two problems here:

1. Fonts are not compiled (No public/fonts/etc...)
2. Images are not compiled

I've been trying everything, but I don't know what may be happening here... Any Ideas?

Answer 1

I have just fixed a similar issue. If you change the url option to true, you might see failed image URL references.

{ loader: 'css-loader', options: { url: false, sourceMap: true } },

Or you can manual check whether the path reference is correct.

url('../../assets/images/bg.jpg')

I think the images folder doesn't get created because all the image resource links are incorrect.

For the problem I was fixing, the references were all wrong and I couldn't fix them so I just used this webpack copy plugin to copy files to the right dist folder location.

Answer 2

The mini-css-extract-plugin has a 'publicPath' option (see here). It basically tells the generated css where the external resources like fonts, images, etc are to be found. In my case, setting it to '../' and configuring all the file loaders to their proper directories, this worked perfectly. Basically looks like:

rules: [
      {
        test: /\.css$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
            options: {
              publicPath: '/public/path/to/',  // <-- This is what was helping. 
            },
          },
          'css-loader',
        ],
      },
    ],