57 lines
2.3 KiB
TypeScript
57 lines
2.3 KiB
TypeScript
/// <reference path="../../typings/fs-extra/fs-extra.d.ts" />
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/// <reference path="../../typings/node/node.d.ts" />
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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 {wrapDiffingPlugin, DiffingBroccoliPlugin, DiffResult} from '../diffing-broccoli-plugin';
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let traceur = require('../../../../tools/transpiler');
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let xtend = require('xtend');
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class DiffingTraceurCompiler implements DiffingBroccoliPlugin {
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constructor(public inputPath: string, public cachePath: string, public options) {}
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static includeExtensions = ['.js', '.cjs'];
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rebuild(treeDiff: DiffResult) {
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treeDiff.addedPaths.concat(treeDiff.changedPaths)
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.forEach((changedFilePath) => {
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var traceurOpts = xtend({filename: changedFilePath}, this.options.traceurOptions);
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var fsOpts = {encoding: 'utf-8'};
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var absoluteInputFilePath = path.join(this.inputPath, changedFilePath);
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var sourcecode = fs.readFileSync(absoluteInputFilePath, fsOpts);
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var result = traceur.compile(traceurOpts, changedFilePath, sourcecode);
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// TODO: we should fix the sourceMappingURL written by Traceur instead of overriding
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// (but we might switch to typescript first)
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var mapFilepath =
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changedFilePath.replace(/\.\w+$/, '') + this.options.destSourceMapExtension;
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result.js = result.js + '\n//# sourceMappingURL=./' + path.basename(mapFilepath);
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var destFilepath = changedFilePath.replace(/\.\w+$/, this.options.destExtension);
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var destFile = path.join(this.cachePath, destFilepath);
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fse.mkdirsSync(path.dirname(destFile));
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fs.writeFileSync(destFile, result.js, fsOpts);
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var destMap = path.join(this.cachePath, mapFilepath);
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result.sourceMap.file = destFilepath;
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fs.writeFileSync(destMap, JSON.stringify(result.sourceMap), fsOpts);
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});
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treeDiff.removedPaths.forEach((removedFilePath) => {
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var destFilepath = removedFilePath.replace(/\.\w+$/, this.options.destExtension);
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var absoluteOuputFilePath = path.join(this.cachePath, destFilepath);
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fs.unlinkSync(absoluteOuputFilePath);
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});
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}
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}
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let transpileWithTraceur = wrapDiffingPlugin(DiffingTraceurCompiler);
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let TRACEUR_RUNTIME_PATH = traceur.RUNTIME_PATH;
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export {transpileWithTraceur as default, TRACEUR_RUNTIME_PATH};
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