webpack.config.js

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

const webpack = require("webpack");
const nsWebpack = require("nativescript-dev-webpack");
const nativescriptTarget = require("nativescript-dev-webpack/nativescript-target");
const CleanWebpackPlugin = require("clean-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const { BundleAnalyzerPlugin } = require("webpack-bundle-analyzer");
const { NativeScriptWorkerPlugin } = require("nativescript-worker-loader/NativeScriptWorkerPlugin");
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");

module.exports = env => {
    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));
    const appResourcesPlatformDir = platform === "android" ? "Android" : "iOS";

    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",

        // Aot, snapshot, uglify and report can be enabled by providing
        // the `--env.snapshot`, `--env.uglify` or `--env.report` flags
        // when running 'tns run android|ios'
        aot,
        snapshot,
        uglify,
        report,
    } = env;
    const ngToolsWebpackOptions = { tsConfigPath: join(__dirname, "tsconfig.json") };

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

    const config = {
        context: appFullPath,
        watchOptions: {
            ignored: [
                appResourcesFullPath,
                // Don't watch hidden files
                "**/.*",
            ]
        },
        target: nativescriptTarget,
        entry: {
            bundle: aot ?
                `./${nsWebpack.getAotEntryModule(appFullPath)}` :
                `./${nsWebpack.getEntryModule(appFullPath)}`,
            vendor: "./vendor",
        },
        output: {
            pathinfo: true,
            path: dist,
            libraryTarget: "commonjs2",
            filename: "[name].js",
        },
        resolve: {
            extensions: [".ts", ".js", ".scss", ".css"],
            // Resolve {N} system modules from tns-core-modules
            modules: [
                "node_modules/tns-core-modules",
                "node_modules",
            ],
            alias: {
                '~': appFullPath
            },
            // don't resolve symlinks to symlinked modules
            symlinks: false
        },
        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",
        },
        module: {
            rules: [
                { test: /\.html$|\.xml$/, use: "raw-loader" },

                // tns-core-modules reads the app.css and its imports using css-loader
                {
                    test: /[\/|\\]app\.css$/,
                    use: {
                        loader: "css-loader",
                        options: { minimize: false, url: false },
                    }
                },
                {
                    test: /[\/|\\]app\.scss$/,
                    use: [
                        { loader: "css-loader", options: { minimize: false, url: false } },
                        "sass-loader"
                    ]
                },

                // Angular components reference css files and their imports using raw-loader
                { test: /\.css$/, exclude: /[\/|\\]app\.css$/, use: "raw-loader" },
                { test: /\.scss$/, exclude: /[\/|\\]app\.scss$/, use: ["raw-loader", "resolve-url-loader", "sass-loader"] },

                // Compile TypeScript files with ahead-of-time compiler.
                { test: /.ts$/, use: [
                    "nativescript-dev-webpack/moduleid-compat-loader",
                    { loader: "@ngtools/webpack", options: ngToolsWebpackOptions },
                ]},
            ],
        },
        plugins: [
            // Vendor libs go to the vendor.js chunk
            new webpack.optimize.CommonsChunkPlugin({
                name: ["vendor"],
            }),
            // Define useful constants like TNS_WEBPACK
            new webpack.DefinePlugin({
                "global.TNS_WEBPACK": "true",
            }),
            // Remove all files from the out dir.
            new CleanWebpackPlugin([ `${dist}/**/*` ]),
            // Copy native app resources to out dir.
            new CopyWebpackPlugin([
              {
                from: `${appResourcesFullPath}/${appResourcesPlatformDir}`,
                to: `${dist}/App_Resources/${appResourcesPlatformDir}`,
                context: projectRoot
              },
            ]),
            // Copy assets to out dir. Add your own globs as needed.
            new CopyWebpackPlugin([
                { from: "fonts/**" },
                { from: "**/*.jpg" },
                { from: "**/*.png" },
                { from: "**/*.xml" },
            ], { ignore: [`${relative(appPath, appResourcesFullPath)}/**`] }),
            // Generate a bundle starter script and activate it in package.json
            new nsWebpack.GenerateBundleStarterPlugin([
                "./vendor",
                "./bundle",
            ]),
            // Support for web workers since v3.2
            new NativeScriptWorkerPlugin(),
            // AngularCompilerPlugin with augmented NativeScript filesystem to handle platform specific resource resolution.
            new nsWebpack.NativeScriptAngularCompilerPlugin(
                Object.assign({
                    entryModule: resolve(__dirname, "app/app.module#AppModule"),
                    skipCodeGeneration: !aot,
                    platformOptions: {
                        platform,
                        platforms,
                        // ignore: ["App_Resources"]
                    },
                }, ngToolsWebpackOptions)
            ),
            // Does IPC communication with the {N} CLI to notify events when running in watch mode.
            new nsWebpack.WatchStateLoggerPlugin(),
        ],
    };
    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",
            projectRoot,
            webpackConfig: config,
            targetArchs: ["arm", "arm64", "ia32"],
            tnsJavaClassesOptions: { packages: ["tns-core-modules" ] },
            useLibs: false
        }));
    }
    if (uglify) {
        config.plugins.push(new webpack.LoaderOptionsPlugin({ minimize: true }));

        // Work around an Android issue by setting compress = false
        const compress = platform !== "android";
        config.plugins.push(new UglifyJsPlugin({
            uglifyOptions: {
                mangle: { reserved: nsWebpack.uglifyMangleExcludes }, // Deprecated. Remove if using {N} 4+.
                compress,
            }
        }));
    }
    return config;
};