Primitive Type Check

is.js

/*
	type: constructor name ('String', 'Array', 'Object', 'Function')
	value: variable
*/

function is (type, value) {
	return !value ? false : value.constructor.name === type;
}

/*
	use above function
*/

function isArray (value) {
	return !value ? false : value.constructor.name === 'Array';
}

function isMap (value) {
	return !value ? false : value.constructor.name === 'Map';
}

function isObject (value) {
	return !value ? false : value.constructor.name === 'Object';
}

function isString (value) {
	return !value ? false : value.constructor.name === 'String';
}

function isNumber (value) {
	return !value ? false : value.constructor.name === 'Number';
}

function isFunction (value) {
	return !value ? false : value.constructor.name === 'Function';
}