# typeutils

> Super lightweight JavaScript typecheck library

Latest version **1.0.2** (published 2015-06-07) · Apache-2.0 license · 0 weekly downloads

## Install

```sh
npm install typeutils
pnpm add typeutils
yarn add typeutils
bun add typeutils
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.2 |
| Published | 2015-06-07 |
| First published | 2015-04-26 |
| Weekly downloads | 0 |
| License | Apache-2.0 |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 0 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 2 |
| Author | Sergii Iefremov |
| Maintainers | iefserge |
| Keywords | is, typecheck, type |

## Links

- npm: https://www.npmjs.com/package/typeutils
- Repository: https://github.com/iefserge/typeutils
- Issues: https://github.com/iefserge/typeutils/issues
- npm.io page: https://npm.io/package/typeutils

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## Recent versions

- 1.0.2 (latest) — 2015-06-07
- 1.0.1 — 2015-04-26
- 1.0.0 — 2015-04-26
- 0.1.0 — 2015-04-26

## README

## SYNOPSIS

Super lightweight JavaScript typecheck library for primitive values.

[![Build Status](https://travis-ci.org/iefserge/typeutils.svg)](https://travis-ci.org/iefserge/typeutils)

## USAGE

```js
var typeutils = require('typeutils');

typeutils.isUndefined()               // true
typeutils.isFunction(function() {})   // true
typeutils.isObject({})                // true
typeutils.isArray([1, 2, 3])          // true
typeutils.isInteger(10)               // true
typeutils.isString('hello')           // true
typeutils.isNumber(-0.2)              // true
typeutils.isBoolean(false)            // true

typeutils.isArrayOf([1, 2, 3], typeutils.isInteger)   // true
typeutils.isArrayOf([[1], [2]],
  typeutils.testArrayOf(typeutils.isInteger))         // true

function A() {}
typeutils.isArrayOf([new A(), new A()],
  typeutils.testInstanceOf(A))                        // true
```

Note: primitive value wrapper objects are intentionally ignored:

```js
typeutils.isBoolean(new Boolean(false))   // false
typeutils.isString(new String('hello'))   // false
typeutils.isNumber(new Number(10))        // false
typeutils.isInteger(new Number(10))       // false

typeutils.isObject(new Boolean(false))    // true
typeutils.isObject(new String('hello'))   // true
typeutils.isObject(new Number(10))        // true
```

##LICENSE

Apache License, Version 2.0

---
_Source: https://npm.io/package/typeutils · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._