Package Exports

typechecker

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (typechecker) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

TypeChecker

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

Why?

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 isEmpty, isEmptyObject and isPlainObject are darn useful!

Usage

API Documentation

Install

npm

Install: npm install --save typechecker
Require: require('typechecker')

jspm

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

Editions

This package is published with the following editions:

typechecker aliases typechecker/index.js which uses Editions to automatically select the correct edition for the consumers environment
typechecker/source/index.ts is typescript source code with import for modules
typechecker/edition-browsers/index.js is typescript compiled for browsers with import for modules
typechecker/edition-node-13/index.js is typescript compiled for node.js 13 with require for modules
typechecker/edition-node-12/index.js is typescript compiled for node.js 12 with require for modules
typechecker/edition-node-0.8/index.js is typescript compiled for node.js 0.8 with require for modules