ns-bootstrap-transformer

ns-replace-bootstrap.ts

import { dirname, relative } from 'path';
import * as ts from 'typescript';
import {
    StandardTransform,
    TransformOperation,
    collectDeepNodes,
    insertStarImport,
    ReplaceNodeOperation,
    makeTransform,
} from "@ngtools/webpack/src/transformers"
import { AngularCompilerPlugin } from '@ngtools/webpack';
import { workaroundResolve } from '@ngtools/webpack/src/compiler_host';

export function nsReplaceBootstrap(getNgCompiler: () => AngularCompilerPlugin): ts.TransformerFactory<ts.SourceFile> {
    // console.log("----> nsReplaceBootstrap called! ngCompiler: " + ngCompiler);

    const shouldTransform = (fileName) => !fileName.endsWith('.ngfactory.ts') && !fileName.endsWith('.ngstyle.ts');
    const getTypeChecker = () => (<any>getNgCompiler())._getTsProgram().getTypeChecker();

    const standardTransform: StandardTransform = function (sourceFile: ts.SourceFile) {
        const ngCompiler = getNgCompiler();

        // ignore generated files
        const getEntryModule = () => ngCompiler.entryModule
            ? { path: workaroundResolve(getNgCompiler().entryModule.path), className: getNgCompiler().entryModule.className }
            : this.entryModule;

        const ops: TransformOperation[] = [];

        const entryModule = getEntryModule();

        if (!shouldTransform(sourceFile.fileName) || !entryModule) {
            return ops;
        }

        // Find all identifiers.
        const entryModuleIdentifiers = collectDeepNodes<ts.Identifier>(sourceFile,
            ts.SyntaxKind.Identifier)
            .filter(identifier => identifier.text === entryModule.className);

        if (entryModuleIdentifiers.length === 0) {
            return [];
        }

        console.log("--> processing file: " + sourceFile.fileName);

        const relativeEntryModulePath = relative(dirname(sourceFile.fileName), entryModule.path);
        const normalizedEntryModulePath = `./${relativeEntryModulePath}`.replace(/\\/g, '/');

        // Find the bootstrap calls.
        entryModuleIdentifiers.forEach(entryModuleIdentifier => {
            // Figure out if it's a `platformNativeScriptDynamic().bootstrapModule(AppModule)` call.
            if (!(
                entryModuleIdentifier.parent
                && entryModuleIdentifier.parent.kind === ts.SyntaxKind.CallExpression
            )) {
                return;
            }

            const callExpr = entryModuleIdentifier.parent as ts.CallExpression;

            if (callExpr.expression.kind !== ts.SyntaxKind.PropertyAccessExpression) {
                return;
            }

            const propAccessExpr = callExpr.expression as ts.PropertyAccessExpression;

            if (propAccessExpr.name.text !== 'bootstrapModule'
                || propAccessExpr.expression.kind !== ts.SyntaxKind.CallExpression) {
                return;
            }

            const bootstrapModuleIdentifier = propAccessExpr.name;
            const innerCallExpr = propAccessExpr.expression as ts.CallExpression;

            if (!(
                innerCallExpr.expression.kind === ts.SyntaxKind.Identifier
                && (innerCallExpr.expression as ts.Identifier).text === 'platformNativeScriptDynamic'
            )) {
                return;
            }

            console.log("--> Will change file: " + sourceFile.fileName);


            const platformBrowserDynamicIdentifier = innerCallExpr.expression as ts.Identifier;

            const idPlatformBrowser = ts.createUniqueName('__NgCli_bootstrap_');
            const idNgFactory = ts.createUniqueName('__NgCli_bootstrap_');

            // Add the transform operations.
            const factoryClassName = entryModule.className + 'NgFactory';
            const factoryModulePath = normalizedEntryModulePath + '.ngfactory';
            ops.push(
                // Replace the entry module import.
                ...insertStarImport(sourceFile, idNgFactory, factoryModulePath),
                new ReplaceNodeOperation(sourceFile, entryModuleIdentifier,
                    ts.createPropertyAccess(idNgFactory, ts.createIdentifier(factoryClassName))),

                // Replace the platformBrowserDynamic import.
                ...insertStarImport(sourceFile, idPlatformBrowser, 'nativescript-angular/platform-static'),
                new ReplaceNodeOperation(sourceFile, platformBrowserDynamicIdentifier,
                    ts.createPropertyAccess(idPlatformBrowser, 'platformNativeScript')),

                new ReplaceNodeOperation(sourceFile, bootstrapModuleIdentifier,
                    ts.createIdentifier('bootstrapModuleFactory')),
            );
        });

        return ops;
    };

    return makeTransform(standardTransform, getTypeChecker);
}

webpack.config.js

const { join, relative, resolve, sep } = 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");
const { AngularCompilerPlugin } = require("@ngtools/webpack");
const { nsReplaceBootstrap } = require("./ns-replace-bootstrap");

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 projectRoot = __dirname;

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

        // You can provide the following flags when running 'tns run android|ios'
        aot, // --env.aot
        snapshot, // --env.snapshot
        uglify, // --env.uglify
        report, // --env.report
        sourceMap, // --env.sourceMap
    } = env;

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

    const entryModule = `${nsWebpack.getEntryModule(appFullPath)}.ts`;
    const entryPath = `.${sep}${entryModule}`;

    const ngCompilerPlugin = new AngularCompilerPlugin({
        hostReplacementPaths: nsWebpack.getResolver([platform, "tns"]),
        platformTransformers: aot ? [nsReplaceBootstrap(() => ngCompilerPlugin)] : null,
        mainPath: resolve(appPath, "main.ts"),
        // entryModule: resolve(appPath, "app.module#AppModule"),
        tsConfigPath: join(__dirname, "tsconfig.esm.json"),
        skipCodeGeneration: !aot,
        sourceMap: !!sourceMap,
    });



    const config = {
        mode: uglify ? "production" : "development",
        context: appFullPath,
        watchOptions: {
            ignored: [
                appResourcesFullPath,
                // Don't watch hidden files
                "**/.*",
            ]
        },
        target: nativescriptTarget,
        entry: {
            bundle: entryPath,
        },
        output: {
            pathinfo: false,
            path: dist,
            libraryTarget: "commonjs2",
            filename: "[name].js",
            globalObject: "global",
        },
        resolve: {
            extensions: [".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
            },
            symlinks: true
        },
        resolveLoader: {
            symlinks: false
        },
        node: {
            // Disable node shims that conflict with NativeScript
            "http": false,
            "timers": false,
            "setImmediate": false,
            "fs": "empty",
            "__dirname": false,
        },
        devtool: sourceMap ? "inline-source-map" : "none",
        optimization: {
            splitChunks: {
                cacheGroups: {
                    vendor: {
                        name: "vendor",
                        chunks: "all",
                        test: (module, chunks) => {
                            const moduleName = module.nameForCondition ? module.nameForCondition() : '';
                            return /[\\/]node_modules[\\/]/.test(moduleName) ||
                                appComponents.some(comp => comp === moduleName);
                        },
                        enforce: true,
                    },
                }
            },
            minimize: !!uglify,
            minimizer: [
                new UglifyJsPlugin({
                    uglifyOptions: {
                        parallel: true,
                        cache: true,
                        output: {
                            comments: false,
                        },
                        compress: {
                            // The Android SBG has problems parsing the output
                            // when these options are enabled
                            'collapse_vars': platform !== "android",
                            sequences: platform !== "android",
                        }
                    }
                })
            ],
        },
        module: {
            rules: [
                {
                    test: new RegExp(entryPath),
                    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: {
                                angular: true,
                                loadCss: !snapshot, // load the application css if in debug mode
                            }
                        },
                    ].filter(loader => !!loader)
                },

                { 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",
                        "@ngtools/webpack",
                    ]
                },

                // Mark files inside `@angular/core` as using SystemJS style dynamic imports.
                // Removing this will cause deprecation warnings to appear.
                {
                    test: /[\/\\]@angular[\/\\]core[\/\\].+\.js$/,
                    parser: { system: true },
                },
            ],
        },
        plugins: [
            // Define useful constants like TNS_WEBPACK
            new webpack.DefinePlugin({
                "global.TNS_WEBPACK": "true",
            }),
            // Remove all files from the out dir.
            new CleanWebpackPlugin([`${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" },
            ], { ignore: [`${relative(appPath, appResourcesFullPath)}/**`] }),
            // Generate a bundle starter script and activate it in package.json
            new nsWebpack.GenerateBundleStarterPlugin([
                "./vendor",
                "./bundle",
            ]),
            // For instructions on how to set up workers with webpack
            // check out https://github.com/nativescript/worker-loader
            new NativeScriptWorkerPlugin(),
            ngCompilerPlugin,
            // 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",
            angular: true,
            requireModules: [
                "reflect-metadata",
                "@angular/platform-browser",
                "@angular/core",
                "@angular/common",
                "@angular/router",
                "nativescript-angular/platform-static",
                "nativescript-angular/router",
            ],
            projectRoot,
            webpackConfig: config,
        }));
    }

    return config;
};