Function-equal NPM

function-equal

Compares two functions, are they equal? Checks their names, bodies and argument names. Powered by parse-function.

Install

npm i function-equal --save

Usage

For more use-cases see the tests

const functionEqual = require('function-equal')

functionEqual

Check two functions are strictly the same.

Params

a {Function}
b {Function}
returns {Boolean}

Example

var fnEqual = require('function-equal')

// returns true
console.log(fnEqual(fnEqual, fnEqual))
console.log(fnEqual(console.log, console.log))
console.log(fnEqual(function a (b, c) { return b + c }, function a (b, c) { return b + c }))

console.log(fnEqual(console.log, console.dir)) // => false
console.log(fnEqual(function a (foo) {}, function c (foo) {})) // => false
console.log(fnEqual(function a (foo) {}, function a (foo) {})) // => true
console.log(fnEqual(function a (foo) {return foo}, function a (foo) {return foo})) // => true
console.log(fnEqual(function a (foo) {}, function a (bar) {})) // => false

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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.