This repo is a proof-of-concept for bunding an Angular application with Google Closure Compiler. It contains a minimal Hello World application with a single component.

The current compressed JS size for an Angular Hello World app is 28kb.

++ ls -alH dist/bundle.js dist/bundle.js.brotli dist/bundle.js.gz dist/bundle.js.map
-rw-r--r--  1 alexeagle  eng   77541 Jan 17 14:19 dist/bundle.js
-rw-r--r--  1 alexeagle  eng   21379 Jan 17 14:19 dist/bundle.js.brotli
-rw-r--r--  1 alexeagle  eng   24512 Jan 17 14:19 dist/bundle.js.gz
-rw-r--r--  1 alexeagle  eng  214850 Jan 17 14:19 dist/bundle.js.map
++ ls -alH node_modules/zone.js/dist/zone.min.js node_modules/zone.js/dist/zone.min.js.brotli node_modules/zone.js/dist/zone.min.js.gz
-rw-r--r--  1 alexeagle  eng  24490 Jan 12 18:12 node_modules/zone.js/dist/zone.min.js
-rw-------  1 alexeagle  eng   7270 Jan 17 14:19 node_modules/zone.js/dist/zone.min.js.brotli
-rw-r--r--  1 alexeagle  eng   8114 Jan 12 18:12 node_modules/zone.js/dist/zone.min.js.gz

See angular/angular#8550 for more context.

Try it

$ npm install
$ npm run build
$ python -m SimpleHTTPServer

Where does the size come from?

$ npm run explore

Notes

This requires an ES6 distro of Angular. I have published my own personal snapshot, which is built from this branch: https://github.com/alexeagle/angular/tree/closure

See package.json for how this is used in the demo.

Requires Node 6.x since the ngc tool (and its deps) are now shipped as ES6 as well.

Requires building rxjs from https://github.com/alexeagle/rxjs/tree/closure2 using npm run compile_dist_es6_for_closure. Copy this into the vendor directory.

TODO

• Get an official Angular distro with ES6, don't use my branch.
• Need rxjs to produce a closure-compatible ES6 distro, don't use my branch.
• Remove the hack of needing node_modules/rxjs for nodejs and vendor/rxjs for browser
• Extend the demo to use a 3rd party component, like @angular/material