139 lines
3.4 KiB
Markdown
139 lines
3.4 KiB
Markdown
# is <sup>[![Version Badge][npm-version-svg]][npm-url]</sup>
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[![Build Status][travis-svg]][travis-url]
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[![dependency status][deps-svg]][deps-url]
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[![dev dependency status][dev-deps-svg]][dev-deps-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]][npm-url]
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[![browser support][testling-png]][testling-url]
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The definitive JavaScript type testing library
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To be or not to be? This is the library!
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## Installation
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As a node.js module
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```shell
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$ npm install is
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```
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As a component
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```shell
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$ component install enricomarino/is
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```
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## API
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### general
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- ``is.a`` (value, type) or ``is.type`` (value, type)
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- ``is.defined`` (value)
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- ``is.empty`` (value)
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- ``is.equal`` (value, other)
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- ``is.hosted`` (value, host)
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- ``is.instance`` (value, constructor)
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- ``is.instanceof`` (value, constructor) - deprecated, because in ES3 browsers, "instanceof" is a reserved word
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- ``is.nil`` (value)
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- ``is.null`` (value) - deprecated, because in ES3 browsers, "null" is a reserved word
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- ``is.undef`` (value)
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- ``is.undefined`` (value) - deprecated, because in ES3 browsers, "undefined" is a reserved word
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### arguments
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- ``is.args`` (value)
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- ``is.arguments`` (value) - deprecated, because "arguments" is a reserved word
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- ``is.args.empty`` (value)
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### array
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- ``is.array`` (value)
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- ``is.array.empty`` (value)
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- ``is.arraylike`` (value)
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### boolean
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- ``is.boolean`` (value)
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- ``is.false`` (value) - deprecated, because in ES3 browsers, "false" is a reserved word
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- ``is.true`` (value) - deprecated, because in ES3 browsers, "true" is a reserved word
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### date
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- ``is.date`` (value)
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### element
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- ``is.element`` (value)
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### error
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- is.error (value)
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### function
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- ``is.fn`` (value)
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- ``is.function`` (value) - deprecated, because in ES3 browsers, "function" is a reserved word
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### number
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- ``is.number`` (value)
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- ``is.infinite`` (value)
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- ``is.decimal`` (value)
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- ``is.divisibleBy`` (value, n)
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- ``is.int`` (value)
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- ``is.maximum`` (value, others)
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- ``is.minimum`` (value, others)
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- ``is.nan`` (value)
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- ``is.even`` (value)
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- ``is.odd`` (value)
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- ``is.ge`` (value, other)
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- ``is.gt`` (value, other)
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- ``is.le`` (value, other)
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- ``is.lt`` (value, other)
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- ``is.within`` (value, start, finish)
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### object
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- ``is.object`` (value)
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### regexp
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- ``is.regexp`` (value)
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### string
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- ``is.string`` (value)
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### encoded binary
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- ``is.base64`` (value)
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- ``is.hex`` (value)
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### ES6 Symbols
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- ``is.symbol`` (value)
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## Contributors
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- [Jordan Harband](https://github.com/ljharb)
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[npm-url]: https://npmjs.org/package/is
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[npm-version-svg]: http://vb.teelaun.ch/enricomarino/is.svg
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[travis-svg]: https://travis-ci.org/enricomarino/is.svg
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[travis-url]: https://travis-ci.org/enricomarino/is
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[deps-svg]: https://david-dm.org/enricomarino/is.svg
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[deps-url]: https://david-dm.org/enricomarino/is
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[dev-deps-svg]: https://david-dm.org/enricomarino/is/dev-status.svg
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[dev-deps-url]: https://david-dm.org/enricomarino/is#info=devDependencies
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[testling-png]: https://ci.testling.com/enricomarino/is.png
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[testling-url]: https://ci.testling.com/enricomarino/is
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[npm-badge-png]: https://nodei.co/npm/is.png?downloads=true&stars=true
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[license-image]: http://img.shields.io/npm/l/is.svg
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[license-url]: LICENSE.md
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[downloads-image]: http://img.shields.io/npm/dm/is.svg
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[downloads-url]: http://npm-stat.com/charts.html?package=is
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