Npm run start - Source files which are compiled via copy-webpack-plugin are not copied/rendered to build.

[zenzjtech]

Hello,
Context

• Npm run build: OK.
• Npm run start: All the source files which are compiled via copy-webpack-plugin the options.plugins are not rendered/copied to build directory whenever there is a HOT RELOAD. In the first run, the result is as expected.
  Example: Manifest.json.

FYT: My webpack.config.js

var webpack = require("webpack"),
  path = require("path"),
  fileSystem = require("fs"),
  env = require("./utils/env"),
  CleanWebpackPlugin = require("clean-webpack-plugin").CleanWebpackPlugin,
  CopyWebpackPlugin = require("copy-webpack-plugin"),
  HtmlWebpackPlugin = require("html-webpack-plugin"),
  WriteFilePlugin = require("write-file-webpack-plugin");

// load the secrets
var alias = {};

var secretsPath = path.join(__dirname, ("secrets." + env.NODE_ENV + ".js"));

var fileExtensions = ["jpg", "jpeg", "png", "gif", "eot", "otf", "svg", "ttf", "woff", "woff2"];

if (fileSystem.existsSync(secretsPath)) {
  alias["secrets"] = secretsPath;
}

var options = {
  mode: process.env.NODE_ENV || "development",
  entry: {
    popup: path.join(__dirname, "src", "js", "popup.js"),
    options: path.join(__dirname, "src", "js", "options.js"),
    background: path.join(__dirname, "src", "js", "background", "index.js"),
    contentScript: path.join(__dirname, "src", "js", "content-scripts", "index.js")
  },
  chromeExtensionBoilerplate: {
    notHotReload: ["contentScript"]
  },
  output: {
    path: path.join(__dirname, "build"),
    filename: "[name].bundle.js"
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        loader: "style-loader!css-loader",
        exclude: /node_modules/
      },
      {
        test: new RegExp('\.(' + fileExtensions.join('|') + ')$'),
        loader: "file-loader?name=[name].[ext]",
        exclude: /node_modules/
      },
      {
        test: /\.html$/,
        loader: "html-loader",
        exclude: /node_modules/
      },
      {
        test: /\.(js|jsx)$/,
        loader: "babel-loader",
        exclude: /node_modules/
      }
    ]
  },
  resolve: {
    alias: alias,
    extensions: fileExtensions.map(extension => ("." + extension)).concat([".jsx", ".js", ".css"]),
    modules: [path.resolve(__dirname, 'src'), 'node_modules'],
  },
  plugins: [
    // clean the build folder
    new CleanWebpackPlugin(),
    // expose and write the allowed env vars on the compiled bundle
    new webpack.EnvironmentPlugin(["NODE_ENV"]),
    new CopyWebpackPlugin([{
      from: "src/manifest.json",
      transform: function (content, path) {
        // generates the manifest file using the package.json informations
        return Buffer.from(JSON.stringify({
          description: process.env.npm_package_description,
          version: process.env.npm_package_version,
          ...JSON.parse(content.toString())
        }))
      }
    }]),
    new CopyWebpackPlugin([{
      from: 'src/css/inject.css',
      to: 'inject.css',
      toType: 'file'
    }]),
    new CopyWebpackPlugin([{
      from: 'src/js/content-scripts/captureXHRResponse.js',
      to: 'captureXHRResponse.js',
      toType: 'file'
    }]),
    new CopyWebpackPlugin([{
      from: 'src/img/download.png',
      to: 'download.png',
      toType: 'file'
    }]),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, "src", "popup.html"),
      filename: "popup.html",
      chunks: ["popup"]
    }),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, "src", "options.html"),
      filename: "options.html",
      chunks: ["options"]
    }),
    new WriteFilePlugin()
  ]
};

/*if (env.NODE_ENV === "development") {
  options.devtool = "cheap-module-eval-source-map";
}*/
options.devtool = "cheap-module-eval-source-map";

module.exports = options;

Node version: 12.x

[zenzjtech]

My solution for anyone whom concerns:

• Remove the clean plugin from webpack.config.js here
• Remember to add it again in the utils/build.js script.

var webpack = require("webpack"),
	CleanWebpackPlugin = require("clean-webpack-plugin").CleanWebpackPlugin,
	config = require("../webpack.config");


config.plugins = [
	// clean the build folder
	new CleanWebpackPlugin(),
].concat(config.plugins);

webpack(
	config,
	function (err) { if (err) throw err; }
);