mirror of
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52 lines
1.7 KiB
Markdown
52 lines
1.7 KiB
Markdown
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# is-negative-zero <sup>[![Version Badge][2]][1]</sup>
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[![dependency status][5]][6]
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[![dev dependency status][7]][8]
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[![License][license-image]][license-url]
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[![Downloads][downloads-image]][downloads-url]
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[![npm badge][11]][1]
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Is this value negative zero? === will lie to you.
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## Example
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```js
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var isNegativeZero = require('is-negative-zero');
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var assert = require('assert');
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assert.notOk(isNegativeZero(undefined));
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assert.notOk(isNegativeZero(null));
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assert.notOk(isNegativeZero(false));
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assert.notOk(isNegativeZero(true));
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assert.notOk(isNegativeZero(0));
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assert.notOk(isNegativeZero(42));
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assert.notOk(isNegativeZero(Infinity));
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assert.notOk(isNegativeZero(-Infinity));
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assert.notOk(isNegativeZero(NaN));
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assert.notOk(isNegativeZero('foo'));
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assert.notOk(isNegativeZero(function () {}));
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assert.notOk(isNegativeZero([]));
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assert.notOk(isNegativeZero({}));
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assert.ok(isNegativeZero(-0));
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```
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## Tests
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Simply clone the repo, `npm install`, and run `npm test`
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[1]: https://npmjs.org/package/is-negative-zero
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[2]: http://versionbadg.es/inspect-js/is-negative-zero.svg
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[3]: https://travis-ci.org/inspect-js/is-negative-zero.svg
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[4]: https://travis-ci.org/inspect-js/is-negative-zero
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[5]: https://david-dm.org/inspect-js/is-negative-zero.svg
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[6]: https://david-dm.org/inspect-js/is-negative-zero
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[7]: https://david-dm.org/inspect-js/is-negative-zero/dev-status.svg
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[8]: https://david-dm.org/inspect-js/is-negative-zero#info=devDependencies
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[11]: https://nodei.co/npm/is-negative-zero.png?downloads=true&stars=true
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[license-image]: http://img.shields.io/npm/l/is-negative-zero.svg
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[license-url]: LICENSE
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[downloads-image]: http://img.shields.io/npm/dm/is-negative-zero.svg
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[downloads-url]: http://npm-stat.com/charts.html?package=is-negative-zero
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