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nodejs/node_modules/is-nan/README.md

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+#is-nan <sup>[![Version Badge][2]][1]</sup>
+
+[![Build Status][3]][4]
+[![dependency status][5]][6]
+[![dev dependency status][7]][8]
+[![License][license-image]][license-url]
+[![Downloads][downloads-image]][downloads-url]
+
+[![npm badge][11]][1]
+
+[![browser support][9]][10]
+
+ES6-compliant shim for Number.isNaN - the global isNaN returns false positives.
+
+This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES3-supported environment and complies with the [spec](http://www.ecma-international.org/ecma-262/6.0/#sec-number.isnan).
+
+## Example
+
+```js
+Number.isNaN = require('is-nan');
+var assert = require('assert');
+
+assert.notOk(Number.isNaN(undefined));
+assert.notOk(Number.isNaN(null));
+assert.notOk(Number.isNaN(false));
+assert.notOk(Number.isNaN(true));
+assert.notOk(Number.isNaN(0));
+assert.notOk(Number.isNaN(42));
+assert.notOk(Number.isNaN(Infinity));
+assert.notOk(Number.isNaN(-Infinity));
+assert.notOk(Number.isNaN('foo'));
+assert.notOk(Number.isNaN(function () {}));
+assert.notOk(Number.isNaN([]));
+assert.notOk(Number.isNaN({}));
+
+assert.ok(Number.isNaN(NaN));
+```
+
+## Tests
+Simply clone the repo, `npm install`, and run `npm test`
+
+[1]: https://npmjs.org/package/is-nan
+[2]: http://versionbadg.es/ljharb/is-nan.svg
+[3]: https://travis-ci.org/ljharb/is-nan.svg
+[4]: https://travis-ci.org/ljharb/is-nan
+[5]: https://david-dm.org/ljharb/is-nan.svg
+[6]: https://david-dm.org/ljharb/is-nan
+[7]: https://david-dm.org/ljharb/is-nan/dev-status.svg
+[8]: https://david-dm.org/ljharb/is-nan#info=devDependencies
+[9]: https://ci.testling.com/ljharb/is-nan.png
+[10]: https://ci.testling.com/ljharb/is-nan
+[11]: https://nodei.co/npm/is-nan.png?downloads=true&stars=true
+[license-image]: http://img.shields.io/npm/l/is-nan.svg
+[license-url]: LICENSE
+[downloads-image]: http://img.shields.io/npm/dm/is-nan.svg
+[downloads-url]: http://npm-stat.com/charts.html?package=is-nan