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# set-function-length <sup>[![Version Badge][npm-version-svg]][package-url]</sup> | |
[![github actions][actions-image]][actions-url] | |
[![coverage][codecov-image]][codecov-url] | |
[![License][license-image]][license-url] | |
[![Downloads][downloads-image]][downloads-url] | |
[![npm badge][npm-badge-png]][package-url] | |
Set a function’s length. | |
Arguments: | |
- `fn`: the function | |
- `length`: the new length. Must be an integer between 0 and 2**32. | |
- `loose`: Optional. If true, and the length fails to be set, do not throw. Default false. | |
Returns `fn`. | |
## Usage | |
```javascript | |
var setFunctionLength = require('set-function-length'); | |
var assert = require('assert'); | |
function zero() {} | |
function one(_) {} | |
function two(_, __) {} | |
assert.equal(zero.length, 0); | |
assert.equal(one.length, 1); | |
assert.equal(two.length, 2); | |
assert.equal(setFunctionLength(zero, 10), zero); | |
assert.equal(setFunctionLength(one, 11), one); | |
assert.equal(setFunctionLength(two, 12), two); | |
assert.equal(zero.length, 10); | |
assert.equal(one.length, 11); | |
assert.equal(two.length, 12); | |
``` | |
[package-url]: https://npmjs.org/package/set-function-length | |
[npm-version-svg]: https://versionbadg.es/ljharb/set-function-length.svg | |
[deps-svg]: https://david-dm.org/ljharb/set-function-length.svg | |
[deps-url]: https://david-dm.org/ljharb/set-function-length | |
[dev-deps-svg]: https://david-dm.org/ljharb/set-function-length/dev-status.svg | |
[dev-deps-url]: https://david-dm.org/ljharb/set-function-length#info=devDependencies | |
[npm-badge-png]: https://nodei.co/npm/set-function-length.png?downloads=true&stars=true | |
[license-image]: https://img.shields.io/npm/l/set-function-length.svg | |
[license-url]: LICENSE | |
[downloads-image]: https://img.shields.io/npm/dm/set-function-length.svg | |
[downloads-url]: https://npm-stat.com/charts.html?package=set-function-length | |
[codecov-image]: https://codecov.io/gh/ljharb/set-function-length/branch/main/graphs/badge.svg | |
[codecov-url]: https://app.codecov.io/gh/ljharb/set-function-length/ | |
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/set-function-length | |
[actions-url]: https://github.com/ljharb/set-function-length/actions | |