angular__angular/ember-cli-build.js

var fs = require('fs');
var path = require('path');

// Import the require hook. Enables us to require TS files natively.
require('ts-node/register');

const detect = require('./tools/build/dart').detect;
var mergeTrees = require('broccoli-merge-trees');
var Angular2App = require('angular-cli/lib/broccoli/angular2-app');
var BroccoliSass = require('broccoli-sass');
var broccoliAutoprefixer = require('broccoli-autoprefixer');
var BroccoliTs2Dart = require('./tools/broccoli/broccoli-ts2dart').default;
var dartfmt = require('./tools/broccoli/broccoli-dartfmt').default;

var autoprefixerOptions = require('./build/autoprefixer-options');

module.exports = function(defaults) {
  var demoAppCssTree = new BroccoliSass(['src/demo-app'], './demo-app.scss', 'demo-app/demo-app.css');
  var demoCssTree = getCssTree('demo-app');
  var componentCssTree = getCssTree('components');
  var angularAppTree = new Angular2App(defaults);
  var dartAppTree = getDartTree('src/');

  return mergeTrees([
    angularAppTree.toTree(),
    componentCssTree,
    demoAppCssTree,
    demoCssTree,
  ].concat(dartAppTree || []));
};

/** Gets the Dart tree - Transpile Dart files and format them afterward. */
function getDartTree(root) {
  const ts2dart = new BroccoliTs2Dart('src/', {
    generateLibraryName: true,
    generateSourceMap: false,
    translateBuiltins: true,
  });

  const dartSDK = detect();
  if (dartSDK) {
    // If Dart isn't found, detect() will throw an error.
    return dartfmt(ts2dart, { dartSDK });
  } else {
    console.warn('---------------------------------------');
    console.warn('You do not have the Dart SDK installed.');
    console.warn('In order to contribute to this repo, please refer to');
    console.warn('https://github.com/angular/material2/blob/master/CONTRIBUTING.md');
    console.warn('');
    console.warn('You can still build and serve the demo app without dart support.');
    return null;
  }
}

/** Gets the tree for all of the components' CSS. */
function getCssTree(folder) {
  var srcPath = `src/${folder}/`;
  var components = fs.readdirSync(srcPath)
    .filter(file => fs.statSync(path.join(srcPath, file)).isDirectory());

  var componentCssTrees = components.reduce((trees, component) => {
    // We want each individual scss file to be compiled into a corresponding css file
    // so that they can be individually included in styleUrls.
    var scssFiles = fs.readdirSync(path.join(srcPath, component))
        .filter(file => path.extname(file) === '.scss')
        .map(file => path.basename(file, '.scss'));

    return scssFiles.map(fileName => {
      return BroccoliSass(
          [`${srcPath}/${component}`, 'src/core/style'], // Directories w/ scss sources
          `./${fileName}.scss`,                              // Root scss input file
          `${folder}/${component}/${fileName}.css`);        // Css output file
    }).concat(trees);
  }, []);
  return broccoliAutoprefixer(mergeTrees(componentCssTrees), autoprefixerOptions);
}