Get-function-arguments NPM

get-function-arguments

Get function arguments, useful for and used in dependency injectors. Works for regular functions, generator functions and arrow functions.

Install

npm i get-function-arguments --save

Usage

For more use-cases see the tests

const getFunctionArguments = require('get-function-arguments')

getFunctionArguments

Get function arguments names.

Params

fn {Function}: Function from which to get arguments names.
max {Number}: How many characters to cut from fns toString.
returns {Array}

Example

var fnArgs = require('get-function-arguments')

console.log(fnArgs(function (a, b, c) {})) // => [ 'a', 'b', 'c' ]
console.log(fnArgs(function named (a , b, c) {})) // => [ 'a', 'b', 'c' ]

console.log(fnArgs(a => {})) // => [ 'a' ]
console.log(fnArgs((a, b) => {})) // => [ 'a', 'b' ]

console.log(fnArgs(function * (a ,b, c) {})) // => [ 'a', 'b', 'c' ]
console.log(fnArgs(function * named (a ,b, c) {})) // => [ 'a', 'b', 'c' ]

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Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
But before doing anything, please read the CONTRIBUTING.md guidelines.