Best way to extern chrome extensions API, to work with Closure compiler Advanced Optimization?

Question

Is there an easy way to use advanced optimization on my Chrome extension's code?

It uses chrome API, and Advanced Optimization doesn't recongnize its keywords. Is there a file or something that externs all chrome API?

Answer 1

Whenever you're in need of an externs file, take a look at the contrib/externs directory of the closure-compiler repository. The externs for Chrome extensions is found at contrib/externs/chrome_extensions.js, and can be used as follows:

// ==ClosureCompiler==
// @compilation_level ADVANCED_OPTIMIZATIONS
// @externs_url https://raw.githubusercontent.com/google/closure-compiler/master/contrib/externs/chrome_extensions.js
// ==/ClosureCompiler==

// Your code here.