Package closure-compiler

JavaScript minifier and checker

https://developers.google.com/closure/compiler/

The Closure Compiler is a tool for making JavaScript download and run
faster. It is a true compiler for JavaScript. Instead of compiling
from a source language to machine code, it compiles from JavaScript to
better JavaScript. It parses your JavaScript, analyzes it, removes
dead code and rewrites and minimizes what’s left. It also checks
syntax, variable references, and types, and warns about common
JavaScript pitfalls.

General Commands (Section 1)
closure-compiler
closure-compiler may be used to check and optimize JavaScript code. If positional arguments are not given, code to check will be read from standard input.