aire-checker

Light-weight utility module for comparing and validating ES6 primitive and reference data types: Array, Boolean, Function, Number, Object, String, Symbol, Null, Undefined.

Installation

Using npm:

$ npm install --save aire-checker

Using yarn:

$ yarn add aire-checker

Usage

In Node.js:

import checker from 'aire-checker'

let retVal = checker.equals(100, '100')  // true
retVal = checker.strictEquals(100, '100')  // false
retVal = checker.equalsIgnoreCase('hello', 'HELLO')  // true
retVal = checker.isArray('hello')  // false
retVal = checker.isArray(['hello'])  // true
retVal = checker.isEmpty({})  // true
retVal = checker.isNullOrUndefined(null)  // true
retVal = checker.isNullOrUndefined(undefined)  // true
retVal = checker.isSymbol({'value': true})  // false
retVal = checker.isSymbol(Symbol('hello'))  // true
retVal = checker.numbersOnly(100, 200, '300', 400)  // throws 'TypeError'
retVal = checker.numbersOnly(100, 200, 300, 400)  // no error
retVal = checker.booleansOnly(true, false, false, true, 'false', true)  // throws 'TypeError'
retVal = checker.booleansOnly(true, false, false, true, false, true)  // true
retVal = checker.stringsArrayObjectsOnly('hello', [1,2,3], 100, {'value': true})  // throws 'TypeError'
retVal = checker.stringsArrayObjectsOnly('hello', [1,2,3], {'value': true})  // true

Public static functions

  checker.equals(subject, target)
  checker.strictEquals(subject, target)
  checker.equalsIgnoreCase(subject, target)
  checker.isGreaterThan(subject, target)
  checker.isGreaterThanOrEqualTo(subject, target)
  checker.isLessThan(subject, target)
  checker.isLessThanOrEqualTo(subject, target)
  checker.isArray(subject)
  checker.isBoolean(subject)
  checker.isDate(subject)
  checker.isEmpty(subject)
  checker.isFunction(subject)
  checker.isNull(subject)
  checker.isUndefined(subject)
  checker.isNullOrUndefined(subject)
  checker.isNumber(subject)
  checker.isObject(subject)
  checker.isString(subject)
  checker.isSymbol(subject)
  checker.arraysOnly(...args)
  checker.argsWithValuesOnly(...args)
  checker.booleansOnly(...args)
  checker.datesOnly(...args)
  checker.definedArgsOnly(...args)
  checker.numbersOnly(...args)
  checker.objectsOnly(...args)
  checker.stringsArrayObjectsOnly(...args)
  checker.stringsOnly(...args)
  checker.symbolsOnly(...args)