TypeChecker

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Why should I use this instead of say instanceof?

Under certain circumstances instanceof may not return the correct results. This occurs with node's vm module especially, and circumstances where an object's prototype has been dereferenced from the original. As such, for basic == and === checks (like a === null), you're fine not using this, but for checks when you would have done instanceof (like err instanceof Error), you should try to use this instead. Plus things like isPlainObject are darn useful!

Complete API Documentation.

• Install: npm install --save typechecker
• Import: import * as pkg from ('typechecker')
• Require: const pkg = require('typechecker')

import * as pkg from 'https://unpkg.com/typechecker@^7.16.0/edition-deno/index.ts'

<script type="module">
    import * as pkg from '//cdn.skypack.dev/typechecker@^7.16.0'
</script>

<script type="module">
    import * as pkg from '//unpkg.com/typechecker@^7.16.0'
</script>

<script type="module">
    import * as pkg from '//dev.jspm.io/typechecker@7.16.0'
</script>

This package is published with the following editions:

• typechecker/source/index.ts is TypeScript source code with Import for modules
• typechecker/edition-browsers/index.js is TypeScript compiled against ES2019 for web browsers with Import for modules
• typechecker aliases typechecker/edition-esnext/index.js
• typechecker/edition-esnext/index.js is TypeScript compiled against ESNext for Node.js 10 || 12 || 13 || 14 with Require for modules
• typechecker/edition-esnext-esm/index.js is TypeScript compiled against ESNext for Node.js 12 || 13 || 14 with Import for modules
• typechecker/edition-deno/index.ts is TypeScript source code made to be compatible with Deno

Discover the release history by heading on over to the HISTORY.md file.

Discover how you can contribute by heading on over to the CONTRIBUTING.md file.

These amazing people are maintaining this project:

• Benjamin Lupton — view contributions

No sponsors yet! Will you be the first?

These amazing people have contributed code to this project:

• Benjamin Lupton — view contributions
• Joe Gesualdo — view contributions
• Matt Bierner — view contributions
• Sean Fridman — view contributions

Discover how you can contribute by heading on over to the CONTRIBUTING.md file.

Unless stated otherwise all works are:

• Copyright © 2013+ Bevry Pty Ltd
• Copyright © 2011-2012 Benjamin Lupton

and licensed under:

• MIT License