angular-cn/tools/broccoli/broccoli-ts2dart.ts

57 lines
2.2 KiB
TypeScript

/// <reference path="../typings/node/node.d.ts" />
/// <reference path="../typings/fs-extra/fs-extra.d.ts" />
/// <reference path="./ts2dart.d.ts" />
import fs = require('fs');
import fse = require('fs-extra');
import path = require('path');
import ts2dart = require('ts2dart');
import {wrapDiffingPlugin, DiffingBroccoliPlugin, DiffResult} from './diffing-broccoli-plugin';
class TSToDartTranspiler implements DiffingBroccoliPlugin {
static includeExtensions = ['.ts'];
private basePath: string;
private transpiler: ts2dart.Transpiler;
constructor(public inputPath: string, public cachePath: string, public options) {
options.basePath = inputPath;
this.transpiler = new ts2dart.Transpiler(options);
}
rebuild(treeDiff: DiffResult) {
// Matches rootFilePaths in node_tree.ts
// These files are not compatible with Typescript's ES6 library
// so they must be explicitly included when targetting ES5, as ts2dart does.
// see https://github.com/angular/angular/issues/3770
let toEmit = [path.resolve(this.inputPath, 'angular2/manual_typings/traceur-runtime.d.ts')];
let getDartFilePath = (path: string) => path.replace(/((\.js)|(\.ts))$/i, '.dart');
treeDiff.addedPaths.concat(treeDiff.changedPaths)
.forEach((changedPath) => {
let inputFilePath = path.resolve(this.inputPath, changedPath);
// Ignore files which don't need to be transpiled to Dart
let dartInputFilePath = getDartFilePath(inputFilePath);
if (fs.existsSync(dartInputFilePath)) return;
// Prepare to rebuild
toEmit.push(path.resolve(this.inputPath, changedPath));
});
treeDiff.removedPaths.forEach((removedPath) => {
let absolutePath = path.resolve(this.inputPath, removedPath);
// Ignore files which don't need to be transpiled to Dart
let dartInputFilePath = getDartFilePath(absolutePath);
if (fs.existsSync(dartInputFilePath)) return;
let dartOutputFilePath = getDartFilePath(removedPath);
fs.unlinkSync(path.join(this.cachePath, dartOutputFilePath));
});
this.transpiler.transpile(toEmit, this.cachePath);
}
}
export default wrapDiffingPlugin(TSToDartTranspiler);