57 lines
1.8 KiB
TypeScript
57 lines
1.8 KiB
TypeScript
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/// <reference path="./broccoli-writer.d.ts" />
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/// <reference path="../typings/node/node.d.ts" />
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/// <reference path="../typings/fs-extra/fs-extra.d.ts" />
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import Writer = require('broccoli-writer');
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import fs = require('fs');
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import fse = require('fs-extra');
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import path = require('path');
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import ts2dart = require('ts2dart');
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type Set = {
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[s:string]: boolean
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};
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class TypeScriptToDartTranspiler extends Writer {
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constructor(private inputTree, private includePattern = /\.(js|ts)$/) { super(); }
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write(readTree, destDir): Promise<void> {
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return readTree(this.inputTree).then(dir => this.transpile(dir, destDir));
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}
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private transpile(inputDir: string, destDir: string) {
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var files = this.listRecursive(inputDir);
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var toTranspile = [];
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for (var f in files) {
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// If it's not matching, don't translate.
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if (!f.match(this.includePattern)) continue;
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var dartVariant = f.replace(this.includePattern, '.dart');
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// A .dart file of the same name takes precedence over transpiled code.
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if (files.hasOwnProperty(dartVariant)) continue;
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toTranspile.push(f);
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}
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var transpiler = new ts2dart.Transpiler(
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{generateLibraryName: true, generateSourceMap: false, basePath: inputDir});
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transpiler.transpile(toTranspile, destDir);
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}
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private listRecursive(root: string, res: Set = {}): Set {
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var paths = fs.readdirSync(root);
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paths.forEach((p) => {
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p = path.join(root, p);
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var stat = fs.statSync(p);
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if (stat.isDirectory()) {
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this.listRecursive(p, res);
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} else {
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// Collect *all* files so we can check .dart files that already exist and exclude them.
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res[p] = true;
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}
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});
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return res;
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}
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}
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export function transpile(inputTree) {
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return new TypeScriptToDartTranspiler(inputTree);
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}
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