Trying to transpile (ng2) di.js to ES5

gistfile1.sh

// Trying to follow
// https://github.com/angular/di.js#transpiling-es6

[lukas di.js]$ sudo npm install -g gulp
Password:
/usr/local/bin/gulp -> /usr/local/lib/node_modules/gulp/bin/gulp.js
gulp@3.8.5 /usr/local/lib/node_modules/gulp
├── tildify@0.2.0
├── interpret@0.3.4
├── pretty-hrtime@0.2.1
├── deprecated@0.0.1
├── archy@0.0.2
├── minimist@0.1.0
├── semver@2.3.1
├── chalk@0.4.0 (has-color@0.1.7, ansi-styles@1.0.0, strip-ansi@0.1.1)
├── orchestrator@0.3.3 (sequencify@0.0.7)
├── gulp-util@2.2.19 (lodash._reinterpolate@2.4.1, dateformat@1.0.8-1.2.3, minimist@0.2.0, vinyl@0.2.3, through2@0.5.1, multipipe@0.1.1, lodash.template@2.4.1)
├── liftoff@0.11.3 (extend@1.2.1, resolve@0.7.1, findup-sync@0.1.3)
└── vinyl-fs@0.3.4 (graceful-fs@3.0.2, strip-bom@0.3.1, vinyl@0.2.3, mkdirp@0.5.0, lodash.defaults@2.4.1, through2@0.5.1, glob-watcher@0.0.6, glob-stream@3.1.12)

[lukas di.js]$ gulp build
[20:52:51] Using gulpfile ~/projects/di.js/gulpfile.js
[20:52:51] Starting 'build_source_cjs'...
[20:52:51] Finished 'build_source_cjs' after 9.85 ms
[20:52:51] Starting 'build_source_amd'...
[20:52:51] Finished 'build_source_amd' after 1.85 ms
[20:52:51] Starting 'build_dist'...
[20:52:51] Finished 'build_dist' after 10 μs
[20:52:51] Starting 'build_examples'...
[20:52:51] Finished 'build_examples' after 1.34 ms
[20:52:51] Starting 'build'...
[20:52:51] Finished 'build' after 7.99 μs

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error in plugin 'gulp-traceur'

coffee_maker.js:6:1: Unexpected token @
coffee_maker.js:6:2: Semi-colon expected
    at Transform._transform (/Users/lukas/projects/di.js/node_modules/gulp-traceur/index.js:44:23)
    at Transform._read (/Users/lukas/projects/di.js/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:184:10)
    at Transform._write (/Users/lukas/projects/di.js/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:172:12)
    at doWrite (/Users/lukas/projects/di.js/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:238:10)
    at writeOrBuffer (/Users/lukas/projects/di.js/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:228:5)
    at Transform.Writable.write (/Users/lukas/projects/di.js/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:195:11)
    at write (/Users/lukas/projects/di.js/node_modules/gulp/node_modules/vinyl-fs/node_modules/through2/node_modules/readable-stream/lib/_stream_readable.js:605:24)
    at flow (/Users/lukas/projects/di.js/node_modules/gulp/node_modules/vinyl-fs/node_modules/through2/node_modules/readable-stream/lib/_stream_readable.js:614:7)
    at Transform.pipeOnReadable (/Users/lukas/projects/di.js/node_modules/gulp/node_modules/vinyl-fs/node_modules/through2/node_modules/readable-stream/lib/_stream_readable.js:646:5)
    at Transform.emit (events.js:92:17)
[lukas di.js]$ node --version
v0.10.29