/// /// /// import fs = require('fs'); import fse = require('fs-extra'); import path = require('path'); var traceur = require('../../../tools/transpiler'); var walkSync = require('walk-sync'); import Writer = require('broccoli-writer'); var xtend = require('xtend'); class TraceurFilter extends Writer { static RUNTIME_PATH = traceur.RUNTIME_PATH; constructor(private inputTree, private destExtension: string, private destSourceMapExtension: string, private options = {}) { super(); } write(readTree, destDir) { return readTree(this.inputTree) .then(srcDir => { walkSync(srcDir) .filter(filepath => { var extension = path.extname(filepath).toLowerCase(); return extension === '.js' || extension === '.es6' || extension === '.cjs'; }) .map(filepath => { var options = xtend({filename: filepath}, this.options); var fsOpts = {encoding: 'utf-8'}; var sourcecode = fs.readFileSync(path.join(srcDir, filepath), fsOpts); var result = traceur.compile(options, filepath, sourcecode); // TODO: we should fix the sourceMappingURL written by Traceur instead of overriding // (but we might switch to typescript first) var mapFilepath = filepath.replace(/\.\w+$/, '') + this.destSourceMapExtension; result.js = result.js + '\n //# sourceMappingURL=./' + path.basename(mapFilepath); var destFilepath = filepath.replace(/\.\w+$/, this.destExtension); var destFile = path.join(destDir, destFilepath); fse.mkdirsSync(path.dirname(destFile)); fs.writeFileSync(destFile, result.js, fsOpts); var destMap = path.join(destDir, mapFilepath); result.sourceMap.file = destFilepath; fs.writeFileSync(destMap, JSON.stringify(result.sourceMap), fsOpts); }); }); } } module.exports = TraceurFilter;