is-simple-object

To check if a value is a simple object, that is, it's a plain Object, or its prototype is a plain Object.

A plain Object is defined as:

• {}

• new Object

• Object.create(null) //ref. Object.create()

• Object.create(another_simple_object)

Install

npm install is-simple-object

Usage

var is_simple_object= require("is-simple-object");

assert(is_simple_object({}));		//true
assert(is_simple_object(new Object()));		//true

assert(is_simple_object(Object.create(null)));		//true

assert(is_simple_object(Object.create({})));		//true
assert(is_simple_object(Object.create(new Object())));		//true

assert(is_simple_object(Object.create(Object.create(null))));		//true
assert(is_simple_object(Object.create(Object.create({}))));			//true
assert(is_simple_object(Object.create(Object.create(new Object()))));		//true

assert(!is_simple_object(Object.create([])));		//false, the prototype is not plain.
assert(!is_simple_object(Object.create(new Array())));		//false
assert(!is_simple_object(Object.create(new Date())));		//false
assert(!is_simple_object(Object.create(/reg/)));		//false
assert(!is_simple_object(Object.create(Object.create([]))));		//false
assert(!is_simple_object(Object.create(Object.create(new Date()))));		//false

assert(!is_simple_object(null));		//false
assert(!is_simple_object(undefined));		//false
assert(!is_simple_object(123));		//false
assert(!is_simple_object("abc"));		//false
assert(!is_simple_object(true));		//false
assert(!is_simple_object(false));		//false
assert(!is_simple_object(new Date()));		//false
assert(!is_simple_object(123));		//false
assert(!is_simple_object(new Number(5)));		//false
assert(!is_simple_object([]));		//false
assert(!is_simple_object(new Array(1, 2)));		//false
assert(!is_simple_object(/reg/));		//false
assert(!is_simple_object(new RegExp("reg")));		//false
assert(!is_simple_object(function () { }));		//false

var func1 = function () { };
assert(!is_simple_object(new func1()));		//false
assert(!is_simple_object(Object.create(new func1())));		//false

func1.prototype = {};
assert(is_simple_object(new func1()));		//!!! true, it's just like Object.create({})
assert(is_simple_object(Object.create(new func1())));		//!!! true

func1.prototype = [];
assert(!is_simple_object(new func1()));		//false
assert(!is_simple_object(Object.create(new func1())));		//false

func1.prototype.constructor = Object;
assert(!is_simple_object(new func1()));		//false
assert(!is_simple_object(Object.create(new func1())));		//false

var o2 = [];
o2.constructor = Object;
assert(!is_simple_object(o2));		//false
assert(!is_simple_object(Object.create(o2)));		//false