webpack.config.js

const path = require('path');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const webpack = require('webpack');
const CopyPlugin = require('copy-webpack-plugin');


module.exports = {
    entry: ['babel-polyfill', './src/js/index.js'],
    output: {
        path: path.resolve(__dirname, 'docs'),
        publicPath: '',
        filename: 'bundle.js'
    },
    mode: 'development',
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /(node_modules)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env']
                    }
                }
            },
            {
                test: /\.(sa|sc|c)ss$/,
                exclude: /(node_modules)/,
                use: [
                    {
                        loader: MiniCssExtractPlugin.loader
                    },
                    {
                        loader: "css-loader",
                    },
                    {
                        loader: "postcss-loader"
                    },
                    {
                        loader: "sass-loader",
                        options: {
                            implementation: require('sass')
                        }
                    }
                ]
            },
        ]
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: "bundle.css"
        }),
        new webpack.ProvidePlugin({
            process: 'process/browser',
            buffer: 'buffer',
        }),
        new CopyPlugin({
            patterns: [
                { from: "src/js/pdf.worker.js", to: "." },
                { from: "src/js/pdf.worker.js.map", to: "." },
                { from: "index.html", to: "." },
                { from: "node_modules/tesseract.js-core/tesseract-core.wasm.js", to: "." },
            ],
        }),
    ],
};