Webpack description

webpack.config.js

const { join, relative, resolve, sep } = require("path");

const webpack = require("webpack");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const { BundleAnalyzerPlugin } = require("webpack-bundle-analyzer");
const TerserPlugin = require("terser-webpack-plugin");

const VueLoaderPlugin = require("vue-loader/lib/plugin");
const NsVueTemplateCompiler = require("nativescript-vue-template-compiler");

const nsWebpack = require("nativescript-dev-webpack");
const nativescriptTarget = require("nativescript-dev-webpack/nativescript-target");
const {
  NativeScriptWorkerPlugin
} = require("nativescript-worker-loader/NativeScriptWorkerPlugin");
const hashSalt = Date.now().toString();

module.exports = env => {
  // Add your custom Activities, Services and other android app components here.
  const appComponents = [
    "tns-core-modules/ui/frame",
    "tns-core-modules/ui/frame/activity"
  ];

  const platform = env && ((env.android && "android") || (env.ios && "ios"));
  if (!platform) {
    throw new Error("You need to provide a target platform!");
  }

  const platforms = ["ios", "android"];
  const projectRoot = __dirname;

  // Default destination inside platforms/<platform>/...
  const dist = resolve(
    projectRoot,
    nsWebpack.getAppPath(platform, projectRoot)
  );

  const {
    // The 'appPath' and 'appResourcesPath' values are fetched from
    // the nsconfig.json configuration file
    // when bundling with `tns run android|ios --bundle`.
    appPath = "app",
    appResourcesPath = "app/App_Resources",

    // You can provide the following flags when running 'tns run android|ios'
    snapshot, // --env.snapshot
    production, // --env.production
    report, // --env.report
    hmr, // --env.hmr
    sourceMap, // --env.sourceMap
    hiddenSourceMap, // --env.hiddenSourceMap
    unitTesting, // --env.unitTesting
    verbose // --env.verbose
  } = env;

  const isAnySourceMapEnabled = !!sourceMap || !!hiddenSourceMap;
  const externals = nsWebpack.getConvertedExternals(env.externals);

  const mode = production ? "production" : "development";

  const appFullPath = resolve(projectRoot, appPath);
  const appResourcesFullPath = resolve(projectRoot, appResourcesPath);

  const entryModule = nsWebpack.getEntryModule(appFullPath, platform);
  const entryPath = `.${sep}${entryModule}`;
  const entries = { bundle: entryPath };
  const areCoreModulesExternal =
    Array.isArray(env.externals) &&
    env.externals.some(e => e.indexOf("tns-core-modules") > -1);
  if (platform === "ios" && !areCoreModulesExternal) {
    entries["tns_modules/tns-core-modules/inspector_modules"] =
      "inspector_modules";
  }
  console.log(`Bundling application for entryPath ${entryPath}...`);

  let sourceMapFilename = nsWebpack.getSourceMapFilename(
    hiddenSourceMap,
    __dirname,
    dist
  );

  const itemsToClean = [`${dist}/**/*`];
  if (platform === "android") {
    itemsToClean.push(
      `${join(
        projectRoot,
        "platforms",
        "android",
        "app",
        "src",
        "main",
        "assets",
        "snapshots"
      )}`
    );
    itemsToClean.push(
      `${join(
        projectRoot,
        "platforms",
        "android",
        "app",
        "build",
        "configurations",
        "nativescript-android-snapshot"
      )}`
    );
  }

  nsWebpack.processAppComponents(appComponents, platform);
  const config = {
    mode: mode,
    context: appFullPath,
    externals,
    watchOptions: {
      ignored: [
        appResourcesFullPath,
        // Don't watch hidden files
        "**/.*"
      ]
    },
    target: nativescriptTarget,
    // target: nativeScriptVueTarget,
    entry: entries,
    output: {
      pathinfo: false,
      path: dist,
      sourceMapFilename,
      libraryTarget: "commonjs2",
      filename: "[name].js",
      globalObject: "global",
      hashSalt
    },
    resolve: {
      extensions: [".vue", ".ts", ".js", ".scss", ".css"],
      // Resolve {N} system modules from tns-core-modules
      modules: [
        resolve(__dirname, "node_modules/tns-core-modules"),
        resolve(__dirname, "node_modules"),
        "node_modules/tns-core-modules",
        "node_modules"
      ],
      alias: {
        "~": appFullPath,
        "@": appFullPath,
        vue: "nativescript-vue"
      },
      // resolve symlinks to symlinked modules
      symlinks: true
    },
    resolveLoader: {
      // don't resolve symlinks to symlinked loaders
      symlinks: false
    },
    node: {
      // Disable node shims that conflict with NativeScript
      http: false,
      timers: false,
      setImmediate: false,
      fs: "empty",
      __dirname: false
    },
    devtool: hiddenSourceMap
      ? "hidden-source-map"
      : sourceMap
      ? "inline-source-map"
      : "none",
    optimization: {
      runtimeChunk: "single",
      splitChunks: {
        cacheGroups: {
          vendor: {
            name: "vendor",
            chunks: "all",
            test: module => {
              const moduleName = module.nameForCondition
                ? module.nameForCondition()
                : "";
              return (
                /[\\/]node_modules[\\/]/.test(moduleName) ||
                appComponents.some(comp => comp === moduleName)
              );
            },
            enforce: true
          }
        }
      },
      minimize: Boolean(production),
      minimizer: [
        new TerserPlugin({
          parallel: true,
          cache: true,
          sourceMap: isAnySourceMapEnabled,
          terserOptions: {
            output: {
              comments: false,
              semicolons: !isAnySourceMapEnabled
            },
            compress: {
              // The Android SBG has problems parsing the output
              // when these options are enabled
              collapse_vars: platform !== "android",
              sequences: platform !== "android"
            },
            keep_fnames: true
          }
        })
      ]
    },
    module: {
      rules: [
        {
          include: [
            join(appFullPath, entryPath + ".js"),
            join(appFullPath, entryPath + ".ts")
          ],
          use: [
            // Require all Android app components
            platform === "android" && {
              loader: "nativescript-dev-webpack/android-app-components-loader",
              options: { modules: appComponents }
            },

            {
              loader: "nativescript-dev-webpack/bundle-config-loader",
              options: {
                registerPages: true, // applicable only for non-angular apps
                loadCss: !snapshot, // load the application css if in debug mode
                unitTesting,
                appFullPath,
                projectRoot,
                ignoredFiles: nsWebpack.getUserDefinedEntries(entries, platform)
              }
            }
          ].filter(loader => Boolean(loader))
        },
        {
          test: /\.css$/,
          use: [
            "nativescript-dev-webpack/style-hot-loader",
            "nativescript-dev-webpack/apply-css-loader.js",
            { loader: "css-loader", options: { url: false } }
          ]
        },
        {
          test: /\.scss$/,
          use: [
            "nativescript-dev-webpack/style-hot-loader",
            "nativescript-dev-webpack/apply-css-loader.js",
            { loader: "css-loader", options: { url: false } },
            "sass-loader"
          ]
        },
        {
          test: /\.js$/,
          loader: "babel-loader"
        },
        {
          test: /\.ts$/,
          loader: "ts-loader",
          options: {
            appendTsSuffixTo: [/\.vue$/],
            allowTsInNodeModules: true,
            compilerOptions: {
              declaration: false
            }
          }
        },
        {
          test: /\.vue$/,
          loader: "vue-loader",
          options: {
            compiler: NsVueTemplateCompiler
          }
        }
      ]
    },
    plugins: [
      // ... Vue Loader plugin omitted
      // make sure to include the plugin!
      new VueLoaderPlugin(),
      // Define useful constants like TNS_WEBPACK
      new webpack.DefinePlugin({
        "global.TNS_WEBPACK": "true",
        TNS_ENV: JSON.stringify(mode),
        process: "global.process"
      }),
      // Remove all files from the out dir.
      //   new CleanWebpackPlugin(itemsToClean, { verbose: !!verbose }),
      new CleanWebpackPlugin({ verbose: !!verbose }), //This line needs modification. 
      // Copy assets to out dir. Add your own globs as needed.
      new CopyWebpackPlugin(
        [
          { from: { glob: "fonts/**" } },
          { from: { glob: "**/*.+(jpg|png)" } },
          { from: { glob: "assets/**/*" } }
        ],
        { ignore: [`${relative(appPath, appResourcesFullPath)}/**`] }
      ),
      new nsWebpack.GenerateNativeScriptEntryPointsPlugin("bundle"),
      // For instructions on how to set up workers with webpack
      // check out https://github.com/nativescript/worker-loader
      new NativeScriptWorkerPlugin(),
      new nsWebpack.PlatformFSPlugin({
        platform,
        platforms
      }),
      // Does IPC communication with the {N} CLI to notify events when running in watch mode.
      new nsWebpack.WatchStateLoggerPlugin()
    ]
  };

  if (unitTesting) {
    config.module.rules.push(
      {
        test: /-page\.js$/,
        use: "nativescript-dev-webpack/script-hot-loader"
      },
      {
        test: /\.(html|xml)$/,
        use: "nativescript-dev-webpack/markup-hot-loader"
      },

      {
        test: /\.(html|xml)$/,
        use: "nativescript-dev-webpack/xml-namespace-loader"
      }
    );
  }

  if (report) {
    // Generate report files for bundles content
    config.plugins.push(
      new BundleAnalyzerPlugin({
        analyzerMode: "static",
        openAnalyzer: false,
        generateStatsFile: true,
        reportFilename: resolve(projectRoot, "report", `report.html`),
        statsFilename: resolve(projectRoot, "report", `stats.json`)
      })
    );
  }

  if (snapshot) {
    config.plugins.push(
      new nsWebpack.NativeScriptSnapshotPlugin({
        chunk: "vendor",
        requireModules: ["tns-core-modules/bundle-entry-points"],
        projectRoot,
        webpackConfig: config
      })
    );
  }

  if (hmr) {
    config.plugins.push(new webpack.HotModuleReplacementPlugin());
  }

  return config;
};