es-abstract/5/Type.js

ECMAScript spec abstract operations.

'use strict';

var isObject = require('../helpers/isObject');

// https://262.ecma-international.org/5.1/#sec-8

module.exports = function Type(x) {
	if (x === null) {
		return 'Null';
	}
	if (typeof x === 'undefined') {
		return 'Undefined';
	}
	if (isObject(x)) {
		return 'Object';
	}
	if (typeof x === 'number') {
		return 'Number';
	}
	if (typeof x === 'boolean') {
		return 'Boolean';
	}
	if (typeof x === 'string') {
		return 'String';
	}
};