chore(gulp): add typescript transpilation tasks

Author: jeffbcross

gulpfile.js

@@ -24,7 +24,9 @@ var karma = require('karma').server;
 var minimist = require('minimist');
 var es5build = require('./tools/build/es5build');
 var runServerDartTests = require('./tools/build/run_server_dart_tests');
+var sourcemaps = require('gulp-sourcemaps');
 var transformCJSTests = require('./tools/build/transformCJSTests');
+var tsc = require('gulp-typescript');
 var ts2dart = require('gulp-ts2dart');
 var util = require('./tools/build/util');
 
@@ -120,6 +122,7 @@ var CONFIG = {
  transpile: {
  src: {
  js: ['modules/**/*.js', 'modules/**/*.es6'],
+ ts: ['modules/**/*.ts'],
  dart: ['modules/**/*.js']
  },
  options: {
@@ -297,6 +300,25 @@ gulp.task('build/transpile.js.dev.es6', transpile(gulp, gulpPlugins, {
  srcFolderInsertion: CONFIG.srcFolderInsertion.js
 }));
 
+
+gulp.task('build/transpile.ts.dev.es5', function() {
+ var tsResult = gulp.src(CONFIG.transpile.src.ts)
+ .pipe(sourcemaps.init())
+ .pipe(tsc({
+
+ target: 'ES5',
+ module: 'commonjs',
+ typescript: require('typescript'),
+ noEmitOnError: true
+ }))
+ .js;
+ return merge([
+ tsResult.js.pipe(sourcemaps.write('.'))
+ .pipe(gulp.dest(CONFIG.dest.js.dev.es5)),
+ tsResult.js.pipe(gulp.dest(CONFIG.dest.js.dev.es5))
+ ]);
+});
+
 gulp.task('build/transpile.js.dev.es5', function() {
  return es5build({
  src: CONFIG.dest.js.dev.es6,