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