iftype

Check types

Installation

$ npm install iftype --save

Usage

'use strict'

const iftype = require('iftype')

function CustomType(){
}

//----------------------------
// Check if type is 'string'
//----------------------------
iftype(123).is('string') // => false
iftype(function foo(){}).is('string') // => false
iftype(new CustomType()).is('string') // => false
iftype(["foo", "bar"]).is('string') // => false
iftype("bar").is('string') // => true
iftype(null).is('string') // => false
iftype(undefined).is('string') // => false


//----------------------------
// Check if type is 'number'
//----------------------------
iftype(123).is('number') // => true
iftype(function foo(){}).is('number') // => false
iftype(new CustomType()).is('number') // => false
iftype(["foo", "bar"]).is('number') // => false
iftype("bar").is('number') // => false
iftype(null).is('number') // => false
iftype(undefined).is('number') // => false


//----------------------------
// Check if type is 'object'
//----------------------------
iftype(123).is('object') // => false
iftype(function foo(){}).is('object') // => false
iftype(new CustomType()).is('object') // => true
iftype(["foo", "bar"]).is('object') // => true
iftype("bar").is('object') // => false
iftype(null).is('object') // => false
iftype(undefined).is('object') // => false


//----------------------------
// Check if type is 'array'
//----------------------------
iftype(123).is('array') // => false
iftype(function foo(){}).is('array') // => false
iftype(new CustomType()).is('array') // => false
iftype(["foo", "bar"]).is('array') // => true
iftype("bar").is('array') // => false
iftype(null).is('array') // => false
iftype(undefined).is('array') // => false


//----------------------------
// Check if type is 'function'
//----------------------------
iftype(123).is('function') // => false
iftype(function foo(){}).is('function') // => true
iftype(new CustomType()).is('function') // => false
iftype(["foo", "bar"]).is('function') // => false
iftype("bar").is('function') // => false
iftype(null).is('function') // => false
iftype(undefined).is('function') // => false


//----------------------------
// Check if type is CustomType
//----------------------------
iftype(123).is(CustomType) // => false
iftype(function foo(){}).is(CustomType) // => false
iftype(new CustomType()).is(CustomType) // => true
iftype(["foo", "bar"]).is(CustomType) // => false
iftype("bar").is(CustomType) // => false
iftype(null).is(CustomType) // => false
iftype(undefined).is(CustomType) // => false

API

| Signature | Description | | --- | --- | | iftype(val).is(type) | Check if type match. | | iftype(val).isString() | Check if string. | | iftype(val).isNumber() | Check if number. | | iftype(val).isObject() | Check if object. | | iftype(val).isArray() | Check if array. | | iftype.is(type, val) | Check if type match. | | iftype.isString(val) | Check if string. | | iftype.isNumber(val) | Check if number. | | iftype.isObject(val) | Check if object. | | iftype.isArray(val) | Check if array. |

License

This software is released under the MIT License.

Links