69bba9b5df
Transpile all sources first to es6 which we can publish and then to es5. Also merge the generated source maps into once map.
79 lines
2.2 KiB
JavaScript
Executable File
79 lines
2.2 KiB
JavaScript
Executable File
#!/usr/bin/env node
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// Attention: This file will be distributed with our npm packages!
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var gulp = require('gulp');
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var traceur = require('gulp-traceur');
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var rename = require('gulp-rename');
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var sourcemaps = require('gulp-sourcemaps');
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var through2 = require('through2');
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var fs = require('fs');
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var path = require('path');
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module.exports = run;
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if (!module.parent) {
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var argv = require('yargs')
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.usage('Transpile to es5.\n\n'+
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'Usage: $0 -m [format] -s [folder] -d [folder]')
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.example('$0 -d tmp', 'transpile in `instantate` format to tmp/')
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.options({
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's': {
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alias: 'source',
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describe: 'source folder',
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default: '.'
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},
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'd': {
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alias: 'dest',
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describe: 'output folder',
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demand: true
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},
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'm': {
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alias: 'modules',
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describe: 'module format, https://github.com/google/traceur-compiler/wiki/Options-for-Compiling',
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default: 'instantiate'
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}
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})
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.help('help')
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.wrap(40)
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.strict()
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.argv
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;
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run({
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src: argv.s,
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dest: argv.d,
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modules: argv.m
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});
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}
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function run(config) {
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var src = ['!node_modules', '!node_modules/**', './**/*.es6'];
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gulp.src(src, {cwd: config.src})
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.pipe(rename(function(file) {
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file.extname = file.extname.replace('.es6', '.js');
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}))
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// TODO(tbosch): Using sourcemaps.init({loadMaps:true}) does not combine
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// the sourcemaps correctly!
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.pipe(sourcemaps.init())
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.pipe(through2.obj(function(file, encoding, done) {
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var self = this;
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fs.readFile(file.path.replace('.js', '.map'), function(error, buffer) {
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if (error) {
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return done(error);
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}
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file.sourceMap = JSON.parse(buffer.toString());
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// The filename needs to be the same as the one that is transpiled
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// so that gulp-sourcemaps can update the mapping
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file.sourceMap.file = file.relative;
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file.sourceMap.sourceRoot = path.dirname(file.relative);
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self.push(file);
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done();
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});
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}))
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.pipe(traceur({
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modules: config.modules,
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sourceMaps: true
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}))
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.pipe(sourcemaps.write('.'))
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.pipe(gulp.dest(config.dest));
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};
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