@deox/check-types

Utilities for checking types.

Installation

Install the package by running the following command in terminal:

npm install @deox/check-types

Usage

The module can be imported using import in ES Modules and require in Common JS as shown below:

ES Modules:

// index.ts
import { isPlainObject } from "@deox/check-types";

// ...

Common JS:

// index.cjs
const { isPlainObject } = require("@deox/check-types");

// ...

API

Following functions are available:

• getClass(input): Returns the name of constructor class of input as string.
• isNull(arg): Checks whether arg is null or not
• isArray(arg): Check whether arg is an Array
• isString(arg): Check whether arg is a String
• isFunction(arg): Check whether arg is a Function
• isBigInt(arg): Check whether arg is a BigInt
• isSymbol(arg): Check whether arg is a Symbol
• isBoolean(arg): Check whether arg is a Boolean
• isUndefined(arg): Check whether arg is undefined
• isNumberAny(arg): Check whether arg is a Number including NaN and Infinity
• isNaN(arg): Check whether arg is NaN
• isFinite(arg): Check whether arg is Number and isFinite
• isNumber(arg): Check whether arg is a Number excluding NaN and Infinity
• isObjectAny(arg): Check whether arg is an Object including null
• isObject(arg): Check whether argis an Object excluding null and Array
• isPlainObject(arg): Check whether arg is a plain object
• isRegExp(arg): Check whether arg is a RegExp
• isDate(arg): Check whether arg is a Date
• isURL(arg): Check whether arg is an URL
• isError(arg): Check whether arg is an Error