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# is-negative-zero <sup>[![Version Badge][npm-version-svg]][package-url]</sup> [![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] [![npm badge][npm-badge-png]][package-url] Is this value negative zero? === will lie to you. ## Example ```js var isNegativeZero = require('is-negative-zero'); var assert = require('assert'); assert.notOk(isNegativeZero(undefined)); assert.notOk(isNegativeZero(null)); assert.notOk(isNegativeZero(false)); assert.notOk(isNegativeZero(true)); assert.notOk(isNegativeZero(0)); assert.notOk(isNegativeZero(42)); assert.notOk(isNegativeZero(Infinity)); assert.notOk(isNegativeZero(-Infinity)); assert.notOk(isNegativeZero(NaN)); assert.notOk(isNegativeZero('foo')); assert.notOk(isNegativeZero(function () {})); assert.notOk(isNegativeZero([])); assert.notOk(isNegativeZero({})); assert.ok(isNegativeZero(-0)); ``` ## Tests Simply clone the repo, `npm install`, and run `npm test` [package-url]: https://npmjs.org/package/is-negative-zero [npm-version-svg]: https://versionbadg.es/inspect-js/is-negative-zero.svg [deps-svg]: https://david-dm.org/inspect-js/is-negative-zero.svg [deps-url]: https://david-dm.org/inspect-js/is-negative-zero [dev-deps-svg]: https://david-dm.org/inspect-js/is-negative-zero/dev-status.svg [dev-deps-url]: https://david-dm.org/inspect-js/is-negative-zero#info=devDependencies [npm-badge-png]: https://nodei.co/npm/is-negative-zero.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/is-negative-zero.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/is-negative-zero.svg [downloads-url]: https://npm-stat.com/charts.html?package=is-negative-zero [codecov-image]: https://codecov.io/gh/inspect-js/is-negative-zero/branch/main/graphs/badge.svg [codecov-url]: https://app.codecov.io/gh/inspect-js/is-negative-zero/ [actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-negative-zero [actions-url]: https://github.com/inspect-js/is-negative-zero/actions