[is-empty-function][author-www-url] [![npmjs.com][npmjs-img]][npmjs-url] [![The MIT License][license-img]][license-url]

> Check that given string, function or arrow function have empty body, using parse-function.

[![code climate][codeclimate-img]][codeclimate-url] [![standard code style][standard-img]][standard-url] [![travis build status][travis-img]][travis-url] [![coverage status][coveralls-img]][coveralls-url] [![dependency status][david-img]][david-url]

Install

``
npm i is-empty-function --save
`

Usage

> For more use-cases see the tests

`js
const isEmptyFunction = require('is-empty-function')
`

$3


> Check that given string, function or arrow function have empty body, using parse-function.

- [val] {Function|ArrowFunction|String} passed to [parse-function][parse-function]
- return {Boolean}

Example

`js
const isEmptyFunction = require('is-empty-function')

const fixture = "function codeCov () {__cov_Ejgcx$XN18CSfmeWn$f7vQ.f['2']++;};"
isEmptyFunction(fixture) // => true
isEmptyFunction('function () {}') // => true
isEmptyFunction('z => {}') // => true
isEmptyFunction('(a, b) => {}') // => true
isEmptyFunction(z => {}) // => true
isEmptyFunction((a, b) => {}) // => true

// return false
isEmptyFunction('function () { return true }') // => false
isEmptyFunction('z => { return z * z }') // => false
isEmptyFunction('(a, b) => {}') // => false
isEmptyFunction(z => { return z + z }) // => false
isEmptyFunction((a, b) => { return a * b}) // => false
isEmptyFunction((a, b) => a 2 z) // => false
isEmptyFunction(function () { return true }) // => false
isEmptyFunction(function named () { return true }) // => false
`




Related


- cleanup-coverage-code: Cleanup ugly code added by code coverage tools during the test process. Like this one __cov_Ejgcx$XN18CSfmeWn$f7vQ.f['2']++;.
- is-ansi: Check that given string contain ANSI color codes, without CLI
- is-async-function: Check that given function is async (callback) function or not. Trying to guess that based on check if callback, cb, done or next exists as function argument name.
- is-backslash: Checks given value is backslash - support char code number, hex, unicode or string value to be given.
- is-installed: Checks that given package is installed on the system - globally or locally.
- is-missing: Check that given name or user/repo exists in npm registry or in github as user repository.
- is-real-object: Returns true if a value is any type of object, but not an array. Browserify-ready.
- parse-function: Parse a function, arrow function or string to object with name, args, params and body` properties.
- relike: Simple promisify a callback-style function with sane defaults. Support promisify-ing sync functions.

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.

Charlike Make Reagent [![new message to charlike][new-message-img]][new-message-url] [![freenode #charlike][freenode-img]][freenode-url]

[![tunnckocore.tk][author-www-img]][author-www-url] [![keybase tunnckocore][keybase-img]][keybase-url] [![tunnckoCore npm][author-npm-img]][author-npm-url] [![tunnckoCore twitter][author-twitter-img]][author-twitter-url] [![tunnckoCore github][author-github-img]][author-github-url]

[npmjs-url]: https://www.npmjs.com/package/is-empty-function
[npmjs-img]: https://img.shields.io/npm/v/is-empty-function.svg?label=is-empty-function

[license-url]: https://github.com/tunnckoCore/is-empty-function/blob/master/LICENSE
[license-img]: https://img.shields.io/badge/license-MIT-blue.svg

[codeclimate-url]: https://codeclimate.com/github/tunnckoCore/is-empty-function
[codeclimate-img]: https://img.shields.io/codeclimate/github/tunnckoCore/is-empty-function.svg

[travis-url]: https://travis-ci.org/tunnckoCore/is-empty-function
[travis-img]: https://img.shields.io/travis/tunnckoCore/is-empty-function.svg

[coveralls-url]: https://coveralls.io/r/tunnckoCore/is-empty-function
[coveralls-img]: https://img.shields.io/coveralls/tunnckoCore/is-empty-function.svg

[david-url]: https://david-dm.org/tunnckoCore/is-empty-function
[david-img]: https://img.shields.io/david/tunnckoCore/is-empty-function.svg

[standard-url]: https://github.com/feross/standard
[standard-img]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg

[author-www-url]: http://www.tunnckocore.tk
[author-www-img]: https://img.shields.io/badge/www-tunnckocore.tk-fe7d37.svg

[keybase-url]: https://keybase.io/tunnckocore
[keybase-img]: https://img.shields.io/badge/keybase-tunnckocore-8a7967.svg

[author-npm-url]: https://www.npmjs.com/~tunnckocore
[author-npm-img]: https://img.shields.io/badge/npm-~tunnckocore-cb3837.svg

[author-twitter-url]: https://twitter.com/tunnckoCore
[author-twitter-img]: https://img.shields.io/badge/twitter-@tunnckoCore-55acee.svg

[author-github-url]: https://github.com/tunnckoCore
[author-github-img]: https://img.shields.io/badge/github-@tunnckoCore-4183c4.svg

[freenode-url]: http://webchat.freenode.net/?channels=charlike
[freenode-img]: https://img.shields.io/badge/freenode-%23charlike-5654a4.svg

[new-message-url]: https://github.com/tunnckoCore/ama
[new-message-img]: https://img.shields.io/badge/ask%20me-anything-green.svg

[parse-function]: https://github.com/tunnckoCore/parse-function