Typefy Library

Easy to use, fast and lightweight library for Node.js.

Warning

This project is under development and is not yet ready for use.

🌱 Overview

This library is a collection of functions that help you to check the type of a variable in JavaScript and TypeScript.

✨ Features

Infer the type

• isArray
• isArrayBuffer
• isBigInt
• isBlob
• isBoolean
• isBuffer
• isDate
• isEnum
• isError
• isFunction
• isNothing
• isNull
• isNullOrUndefined
• isNumber
• isObject
• isPromise
• isRegExp
• isString
• isSymbol
• isUndefined
• isURL
• isURLSearchParams
• isVoid

Check the value

• isFalsy
• isNaNumber
• isTruthy

🚀 Tecnologies

The following tools were used in the construction of the project:

• Jest
• Node.js
• TypeScript

📦 Install

Use the package manager npm, yarn.

npm install @geisonjr/typefy

yarn add @geisonjr/typefy

🏗️ Usage

Example with True Condition

import { isBoolean } from '@geisonjr/typefy'

let test: any = true // false

// Is `true` if the value is a boolean type
if (isBoolean(test)) {
	// The intelisense will be recognize the variable as a boolean
	console.log('This is a boolean')
}

// Output: This is a boolean

Example with False Condition

import { isNumber } from '@geisonjr/typefy'

let test: any = '123'

// Is `true` if the value is a number type
if (isNumber(test)) {
	// The intelisense will be recognize the variable as a number
	console.log('This is a number')
} else {
	// The intelisense will be recognize the variable not as a number
	console.log('This is not a number')
}

// Output: This is not a number

📋 License

This project is under the MIT License