💡 is

A tiny type checker

is is a simple sub 400B type checking library for JavaScript. For a more feature-packed version, check out @sindresorhus/is.

Table of Contents

• Installation
• Usage
  • Supported types

Installation

npm install @itsjonq/is

Usage

import is from '@itsjonq/is';

is.string('Hello');
// true

const fn = () => 'Nope';

is.string(fn);
// false
is.function(fn);
// true
is.object(fn);
// true
is.plainObject(fn);
// false

Supported types

• is.array
• is.blob
• is.boolean
• is.defined
• is.file
• is.function
• is.map
• is.null
• is.number
• is.object
• is.plainObject
• is.regExp
• is.string
• is.symbol
• is.undefined
• is.weakMap