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!
- Install:
npm install --save typechecker
- Import:
import * as pkg from ('typechecker')
- Require:
const pkg = require('typechecker')
import * as pkg from 'https://unpkg.com/typechecker@^8.6.0/edition-deno/index.ts'
<script type="module">
import * as pkg from '//cdn.skypack.dev/typechecker@^8.6.0'
</script>
<script type="module">
import * as pkg from '//unpkg.com/typechecker@^8.6.0'
</script>
<script type="module">
import * as pkg from '//dev.jspm.io/typechecker@8.6.0'
</script>
This package is published with the following editions:
-
typechecker
aliasestypechecker/index.cjs
which uses the Editions Autoloader to automatically select the correct edition for the consumer's environment -
typechecker/source/index.ts
is TypeScript source code with Import for modules -
typechecker/edition-browsers/index.js
is TypeScript compiled against ES2022 for web browsers with Import for modules -
typechecker/edition-es2022/index.js
is TypeScript compiled against ES2022 for Node.js 6 || 8 || 10 || 12 || 14 || 16 || 18 || 20 || 21 with Require for modules -
typechecker/edition-es5/index.js
is TypeScript compiled against ES5 for Node.js 4 || 6 || 8 || 10 || 12 || 14 || 16 || 18 || 20 || 21 with Require for modules -
typechecker/edition-es2022-esm/index.js
is TypeScript compiled against ES2022 for Node.js 12 || 14 || 16 || 18 || 20 || 21 with Import for modules -
typechecker/edition-types/index.d.ts
is TypeScript compiled Types 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:
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: