module.exports = function makeDartTree(destinationPath) {
  var sourceTree = mergeTrees([getSourceTree(), getHtmlSourcesTree()]);
  sourceTree = fixDartFolderLayout(sourceTree);

  var dartTree = mergeTrees([sourceTree, getTemplatedPubspecsTree(), getDocsTree()]);

  return destCopy(dartTree, destinationPath);
};

module.exports = function makeDartTree() {
  var sourceTree = mergeTrees([getSourceTree(), getHtmlSourcesTree()]);
  sourceTree = fixDartFolderLayout(sourceTree);

  var mergedResult = mergeTrees([sourceTree, getTemplatedPubspecsTree(), getDocsTree()]);

  // Move the tree under the 'dart' folder.
  return stew.mv(mergedResult, 'dart');
};

module.exports = function makeDartTree(options: AngularBuilderOptions) {
  var dartSources = dartfmt(getSourceTree(), {dartSDK: options.dartSDK, logs: options.logs});
  var sourceTree = mergeTrees([dartSources, getHtmlSourcesTree()]);
  sourceTree = fixDartFolderLayout(sourceTree);

  var dartTree = mergeTrees([sourceTree, getTemplatedPubspecsTree(), getDocsTree()]);

  return destCopy(dartTree, options.outputPath);
};

module.exports = function makeDartTree(destinationPath) {
  var sourceTree = mergeTrees([getSourceTree(), getHtmlSourcesTree()]);
  sourceTree = fixDartFolderLayout(sourceTree);

  var dartTree = mergeTrees([sourceTree, getTemplatedPubspecsTree(), getDocsTree()]);

  // TODO(iminar): tree differ seems to have issues with trees created by mergeTrees, investigate!
  //   ENOENT error is thrown while doing fs.readdirSync on inputRoot
  //   in the meantime, we just do noop mv to create a new tree
  dartTree = stew.mv(dartTree, '');

  return destCopy(dartTree, destinationPath);
};

function getSourceTree() {
  // Transpile everything in 'modules' except for rtts_assertions.
  var tsInputTree = modulesFunnel(['**/*.js', '**/*.ts', '**/*.dart'], ['rtts_assert/**/*']);
  var transpiled = ts2dart.transpile(tsInputTree);
  // Native sources, dart only examples, etc.
  var dartSrcs = modulesFunnel(['**/*.dart']);
  return mergeTrees([transpiled, dartSrcs]);
}

function getSourceTree() {
  // Transpile everything in 'modules' except for rtts_assertions.
  var tsInputTree = modulesFunnel(['**/*.js', '**/*.ts', '**/*.dart'], ['rtts_assert/**/*']);
  var transpiled = ts2dart(tsInputTree, {generateLibraryName: true, generateSourceMap: false});
  // Native sources, dart only examples, etc.
  var dartSrcs = modulesFunnel(['**/*.dart', '**/*.ng_meta.json', '**/css/**']);
  return mergeTrees([transpiled, dartSrcs]);
}

function getHtmlSourcesTree() {
  // Replace $SCRIPT$ markers in HTML files.
  var htmlSrcsTree = stew.map(modulesFunnel(['*/src/**/*.html']), replaceScriptTagInHtml);
  // Copy a url_params_to_form.js for each benchmark html file.
  var urlParamsToFormTree = new MultiCopy('', {
    srcPath: 'tools/build/snippets/url_params_to_form.js',
    targetPatterns: ['modules/benchmarks*/src/*', 'modules/benchmarks*/src/*/*'],
  });
  urlParamsToFormTree = stew.rename(urlParamsToFormTree, stripModulePrefix);
  return mergeTrees([htmlSrcsTree, urlParamsToFormTree]);
}

function getDocsTree() {
  // LICENSE files
  var licenses = new MultiCopy('', {
    srcPath: 'LICENSE',
    targetPatterns: ['modules/*'],
    exclude: ['*/rtts_assert'],  // Not in dart.
  });
  licenses = stew.rename(licenses, stripModulePrefix);

  // Documentation.
  // Rename *.dart.md -> *.dart.
  var mdTree = stew.rename(modulesFunnel(['**/*.dart.md']),
                           relativePath => relativePath.replace(/\.dart\.md$/, '.md'));
  // Copy all assets, ignore .js. and .dart. (handled above).
  var docs = modulesFunnel(['**/*.md', '**/*.png', '**/*.html', '**/*.css', '**/*.scss'],
                           ['**/*.js.md', '**/*.dart.md']);
  return mergeTrees([licenses, mdTree, docs]);
}

 outputPackages.forEach(function(destDir) {
   var license = new Funnel('.', {files: ['LICENSE'], destDir: destDir});
   nodeTree = mergeTrees([nodeTree, license]);
 });

module.exports = function makeNodeTree(destinationPath) {
  // list of npm packages that this build will create
  var outputPackages = ['angular2', 'benchpress', 'rtts_assert'];

  var modulesTree = new Funnel('modules', {
    include: ['angular2/**', 'benchpress/**', 'rtts_assert/**', '**/e2e_test/**'],
    exclude: [
      // the following code and tests are not compatible with CJS/node environment
      'angular2/test/core/zone/**',
      'angular2/test/test_lib/fake_async_spec.ts',
      'angular2/test/services/xhr_impl_spec.ts',
      'angular2/test/forms/**'
    ]
  });

  var nodeTree = transpileWithTraceur(modulesTree, {
    destExtension: '.js',
    destSourceMapExtension: '.map',
    traceurOptions: {
      sourceMaps: true,
      annotations: true,      // parse annotations
      types: true,            // parse types
      script: false,          // parse as a module
      memberVariables: true,  // parse class fields
      typeAssertionModule: 'rtts_assert/rtts_assert',
      // Don't use type assertions since this is partly transpiled by typescript
      typeAssertions: false,
      modules: 'commonjs'
    }
  });

  // Now we add the LICENSE file into all the folders that will become npm packages
  outputPackages.forEach(function(destDir) {
    var license = new Funnel('.', {files: ['LICENSE'], destDir: destDir});
    nodeTree = mergeTrees([nodeTree, license]);
  });

  // Get all docs and related assets and prepare them for js build
  var docs = new Funnel(modulesTree, {include: ['**/*.md', '**/*.png'], exclude: ['**/*.dart.md']});
  docs = stew.rename(docs, 'README.js.md', 'README.md');

  // Generate shared package.json info
  var BASE_PACKAGE_JSON = require(path.join(projectRootDir, 'package.json'));
  var COMMON_PACKAGE_JSON = {
    version: BASE_PACKAGE_JSON.version,
    homepage: BASE_PACKAGE_JSON.homepage,
    bugs: BASE_PACKAGE_JSON.bugs,
    license: BASE_PACKAGE_JSON.license,
    contributors: BASE_PACKAGE_JSON.contributors,
    dependencies: BASE_PACKAGE_JSON.dependencies,
    devDependencies: {
      "yargs": BASE_PACKAGE_JSON.devDependencies['yargs'],
      "gulp-sourcemaps": BASE_PACKAGE_JSON.devDependencies['gulp-sourcemaps'],
      "gulp-traceur": BASE_PACKAGE_JSON.devDependencies['gulp-traceur'],
      "gulp": BASE_PACKAGE_JSON.devDependencies['gulp'],
      "gulp-rename": BASE_PACKAGE_JSON.devDependencies['gulp-rename'],
      "through2": BASE_PACKAGE_JSON.devDependencies['through2']
    }
  };

  // Add a .template extension since renderLodashTemplate strips one extension
  var packageJsons = stew.rename(new Funnel(modulesTree, {include: ['**/package.json']}), '.json',
                                 '.json.template');
  packageJsons = renderLodashTemplate(
      packageJsons, {files: ["**/**"], context: {'packageJson': COMMON_PACKAGE_JSON}});

  // HACK: workaround for Traceur behavior.
  // It expects all transpiled modules to contain this marker.
  // TODO: remove this when we no longer use traceur
  var traceurCompatibleTsModulesTree = replace(modulesTree, {
    files: ['**/*.ts'],
    patterns: [{
      // Empty replacement needed so that replaceWithPath gets triggered...
      match: /$/g,
      replacement: ""
    }],
    replaceWithPath: function(path, content) {
      if (!path.endsWith('.d.ts')) {
        content += '\r\nexport var __esModule = true;\n';
      }
      return content;
    }
  });

  var typescriptTree = compileWithTypescript(traceurCompatibleTsModulesTree, {
    allowNonTsExtensions: false,
    emitDecoratorMetadata: true,
    declaration: true,
    mapRoot: '', /* force sourcemaps to use relative path */
    module: 'commonjs',
    noEmitOnError: true,
    rootDir: '.',
    rootFilePaths: ['angular2/traceur-runtime.d.ts', 'angular2/globals.d.ts'],
    sourceMap: true,
    sourceRoot: '.',
    target: 'ES5'
  });

  nodeTree = mergeTrees([nodeTree, typescriptTree, docs, packageJsons]);

//.........这里部分代码省略.........