webpack.config.js

const path = require('path');

const HtmlWebpackPlugin = require('html-webpack-plugin');

const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
    entry: './src/index.ts',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js',
        environment:{
            arrowFunction: false,
            const: false
        }
    },
    module:{
        rules:[
            {
                test: /\.ts$/,
                use: [
                    {
                        loader: 'babel-loader',
                        options: {
                            presets: [
                                [
                                    '@babel/preset-env',
                                    {
                                        targets: {
                                            chrome: '112',
                                            ie: '11'
                                        },
                                        corejs: '3',
                                        useBuiltIns: 'usage'
                                    }
                                ]
                            ]
                        }
                    },
                    'ts-loader' 
                ],
                exclude: /node_modules/
            },
            {
                test: /\.less$/,
                use: [
                    'style-loader',
                    'css-loader',
                    {
                        loader:'postcss-loader',
                        options:{
                            postcssOptions:{
                                plugins:[
                                    [
                                        'postcss-preset-env',
                                        {
                                            browsers: 'last 5 versions'
                                        }
                                    ]
                                ]
                            }
                        }
                    },
                    'less-loader',
                ]
            }
        ]
    },
    mode: 'development',
    plugins: [
        new HtmlWebpackPlugin({
            // title: 'Webpack 5 Typescript',
            template: './src/index.html'
        }),
        new CleanWebpackPlugin()
    ],
    resolve: {
        extensions: ['.ts', '.js']
    }
}