Wow, Prepack is awesome!

I just tried out Prepack, which is open-sourced by Facebook several hours ago.

Here is a test file:

Compiled with webpack:

Putting that 928-line bundle through Prepack, and here’s the result:

I am amazed that Prepack could turn a 900-line bundle back into a single line. Check it out:

Prepack · Partial evaluator for JavaScript