Warn-types NPM

WarnTypes

Great type checkers out there just return something_
_but I just want a simple type checker which warns.

This is just a simple wrapper of check-types for my need.

Installation

$ npm install --save warn-types

Import

Node app:

var typeWarner = require('warn-types')

React app:

import typeWarner from 'warn-types'

Usage

The typeWarner is an object which hold single field testResult and the methods below.
The testResult by default hold the value null.
Any of the methods will return a new instance of typeWarner.
The testResult of new instance will be true or false.

typeWarner.number(thing)
typeWarner.string(thing)
typeWarner.bool(thing)
typeWarner.func(thing)
typeWarner.array(thing)
typeWarner.implement(thing, class)

If the thing is the expected type, the testResult will be true;
Else the testResult will be false.

There are also methods with optional prefix.
They work the same as the above. The difference is...
If the thing is null or undefined, the testResult will be true