Package Exports

the-type-validator

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (the-type-validator) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

The type validator

Why ?

Javascript does not have a pretty way to prove something belongs to a specific type.

Ex1. checking typeof

typeof null
"object"
typeof undefined
"undefined"
typeof "undefined"
"string"
typeof Object
"function"
typeof object
"undefined"
typeof {}
"object"
typeof null
"object"

Ex2. comparing

true == 0
false
true == 1
true
true == 2
false

Solid ha?

Which types can i validate

Null
Undefined
Function
String
Number
Array
Object
Promise

Available methods

isNull
isUndefined
isFunction
isString
isNumber
isInteger
isFloat
isArray
isEmptyArray
isObject
isEmptyObject
isPromise
isEmpty

How to use it?

First you need to import it in your project

The require way

let { isObject } = require("the-type-validator");

The import way

import { isObject } from "the-type-validator";

. . .

All validator methods returns boolean

import { isObject, isNull, isUndefined } from "the-type-validator";

const aNull = null
const isVarObject = isObject(aNull)
const isVarNull = isNull(aNull)
const isVarUndefined = isUndefined(aNull)

console.log('isVarObject', isVarObject)
false
console.log('isVarNull', isVarNull)
true
console.log('isVarUndefined', isVarUndefined)
false