1.3 KiB
1.3 KiB
Very fast way of converting "arguments" into array.
This module does the same than fast-args, the only difference is that you can call this with apply
.
Using function.apply(null, arguments)
works on the optimizing compiler while using function(arguments)
generates a leaks of the arguments object and prevent optimizations.
This module uses rest parameters if supported by the javascript engine.
Installation
npm i --save very-fast-args
Usage
const fargs = require('very-fast-args');
function myFunc() {
const args = fargs.apply(null, arguments);
//do something with args.
}
Always use fargs.apply(null, arguments)
and do not use fargs(arguments)
.
Test about optimization
You can test the behavior of the compiler as follows:
» node --trace-deopt --trace-opt bench/simple.js | grep arguments
» node --trace-deopt --trace-opt bench/simple-with-fa.js | grep arguments
[disabled Crankshaft for 0x384b6486d409 <SharedFunctionInfo withVeryFastArgs>, reason: Bad value context for arguments value]
License
This project is licensed under the MIT license. See the LICENSE file for more info.