@cfpb/atomic-component 
Design System atomic component micro-framework
This component can be used by itself, but it was made for Design System, a front end framework developed at the Consumer Financial Protection Bureau.
How to use this component
Detailed instructions can be found at the Design System documentation site.
Utility descriptions
Type Checkers
Utility functions for checking Javascript types and primitives.
Example
var assert = require( 'assert' );
import {
isUndefined,
isObject,
isFunction,
isDate
} from '../utilities/type-checkers.js';
var UNDEFINED;
var date = new Date( 2011, 7, 21 );
function func() {
return true;
}
var object = {
a: '1',
b: '2',
c: '3'
};
assert.equal( typeCheckers.isUndefined( UNDEFINED ), true );
assert.equal( typeCheckers.isObject( object ), true );
assert.equal( typeCheckers.isFunction( func ), true );
assert.equal( typeCheckers.isDate( date ), true );
Getting involved
We welcome your feedback and contributions.