webpack.config.js

const path = require('path')
const CleanWebpackPlugin = require("clean-webpack-plugin").CleanWebpackPlugin,
      CopyWebpackPlugin = require("copy-webpack-plugin"),
    HtmlWebpackPlugin = require("html-webpack-plugin"),
    WriteFilePlugin = require("write-file-webpack-plugin");
module.exports = {
    devtool: 'inline-source-map',
    entry: {
        inject: path.resolve(__dirname, 'src', 'inject.ts'),
        advancedSearchChema: path.resolve(__dirname, 'src', 'advanced-search-schema.ts'),
        background: path.resolve(__dirname, 'src', 'background.ts')
    },
    output: {
        path: path.resolve(__dirname, 'build'),
        filename: '[name].js'
    },
    module: {
        rules: [
            {
                test: /\.ts$/,
                exclude: /node_modules/,
                loader: 'ts-loader'
            }
        ]
    },
    resolve: {
        modules: [
            path.resolve(__dirname, 'src'),
            path.resolve(__dirname, 'node_modules')

        ],
        extensions: ['.js', '.ts']
    },
    plugins: [
        new CopyWebpackPlugin([{
            from: "manifest.json",
            transform: function (content, path) {
              return Buffer.from(JSON.stringify({
                description: process.env.npm_package_description,
                version: process.env.npm_package_version,
                ...JSON.parse(content.toString())
              }))
            }
          },
          {
            from: "images",
            to: "images"
          },
          {
            from: "src/popup.js",
            to: "popup.js"
          }
        
        ]),
        new HtmlWebpackPlugin({
          template: path.join(__dirname, "src", "popup.html"),
          filename: "popup.html",
          chunks: ["popup"]
        }),
        new HtmlWebpackPlugin({
          template: path.join(__dirname, "src", "help.html"),
          filename: "help.html",
          chunks: ["help"]
        }),
        new WriteFilePlugin()
    ]
}