IsOrNot

Description

github

documentation

A Set of is and isNot functions in JavaScript checking and testing on objects and types

Install

$ yarn add is-or-not

or

$ npm install is-or-not

Usage

const utils = require("is-or-not");

utils.isNull(null); // type is null => true
utils.isNull(undefined); // type is undefined => false
utils.isNotNull(undefined); // correct it's undefined=> true

utils.isNotEmpty(["🦄", "🐶", "🐼"]); // array contain values => false
utils.isNotEmpty([]); // array is empty => false

/** ... */

utils.isString("Hello World!"); // Type is String => true
utils.isNotString(["🐶", "🦄"]); // true because type is array  => true

/** ... */

utils.isPrimitive("Primitive type?"); // String is a Primitive type => true
utils.isNotPrimitive("Not primitive type?"); // False because it's a string, primitive => false

/** ... */

utils.isNullOrUndefined("Hello!"); // String is not null or undefined => false
utils.isNullOrUndefined(undefined); // => true

utils.isNotNullOrUndefined("Not primitive type?"); // true it's a string => true
utils.isNotNullOrUndefined(null); // it is null => false

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Documentation

documentation

• isArray
• isBoolean
• isDate
• isEmpty
• isError
• isFunction
• isNotArray
• isNotBoolean
• isNotDate
• isNotEmpty
• isNotError
• isNotFunction
• isNotNull
• isNotNullOrUndefined
• isNotNumber
• isNotObject
• isNotPrimitive
• isNotRegExp
• isNotString
• isNotSymbol
• isNotUndefined
• isNull
• isNullOrUndefined
• isNumber
• isObject
• isPrimitive
• isRegExp
• isString
• isSymbol
• isUndefined

Contribution

Clone the Github Repository

$ git clone git@github.com:AlaeddineMessadi/utils-is.git

All functions' implementations are in the index.js file.

Tests are defined in the test.js file

Running tests

$ yarn test
// or
$ yarn test:watch

or with npm

$ npm run test
or
$ npm run test:watch