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Check types
$ npm install iftype --save
'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
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. |
This software is released under the MIT License.
FAQs
Check types
The npm package iftype receives a total of 0 weekly downloads. As such, iftype popularity was classified as not popular.
We found that iftype demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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