# is-negative-zero

> Is this value negative zero? === will lie to you

Latest version **2.0.3** (published 2024-02-19) · MIT license · 0 weekly downloads

> **Better alternative:** Use Object.is(v, -0) — Consider using a lighter alternative

## Install

```sh
npm install is-negative-zero
pnpm add is-negative-zero
yarn add is-negative-zero
bun add is-negative-zero
```

## Health

**Score 35/100 (D)** — status: abandoned.

Positive: has types; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

Negative: abandoned.

## Facts

| | |
|---|---|
| Version | 2.0.3 |
| Published | 2024-02-19 |
| First published | 2014-01-20 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Node | >= 0.4 |
| Dependencies | 0 |
| Unpacked size | 26.5 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 18 |
| Author | Jordan Harband |
| Maintainers | ljharb |
| Keywords | is, negative, zero, negative zero, number, positive, 0, -0 |

## Links

- npm: https://www.npmjs.com/package/is-negative-zero
- Repository: https://github.com/inspect-js/is-negative-zero
- Issues: https://github.com/inspect-js/is-negative-zero/issues
- Funding: https://github.com/sponsors/ljharb
- npm.io page: https://npm.io/package/is-negative-zero

## Alternatives

- [memory-cache](https://npm.io/package/memory-cache.md) — 795.0K weekly downloads
- [@httptoolkit/proxy-agent](https://npm.io/package/@httptoolkit/proxy-agent.md) — 11.2K weekly downloads
- [express-cache-controller](https://npm.io/package/express-cache-controller.md) — 5.3K weekly downloads
- [http-cache-middleware](https://npm.io/package/http-cache-middleware.md) — 4.5K weekly downloads
- [cache2](https://npm.io/package/cache2.md) — 1.5K weekly downloads

## Recent versions

- 2.0.3 (latest) — 2024-02-19
- 2.0.2 — 2021-12-10
- 2.0.1 — 2020-12-04
- 2.0.0 — 2015-07-25
- 1.0.0 — 2014-08-08
- 0.1.1 — 2014-05-14
- 0.1.0 — 2014-05-13
- 0.0.0 — 2014-01-20

## README

# 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

---
_Source: https://npm.io/package/is-negative-zero · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._