isPlainObject(obj)

Attempts to determine if an object is a plain object like those you would create using the curly braces syntax: {}. The following are not plain objects:

1. Objects with prototypes (created using the new keyword).
2. Booleans.
3. Numbers.
4. NaN.

var isPlainObject = require("can-reflect").isPlainObject;

// Created with {}
console.log(isPlainObject({})); // -> true

// new Object
console.log(isPlainObject(new Object())); // -> true

// Custom object
var Ctr = function(){};
var obj = new Ctr();

console.log(isPlainObject(obj)); // -> false