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.

import isPlainObject from "can-util/js/is-plain-object/is-plain-object";

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

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

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

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