Compare two objects recursively, including DOM references and methods

Object.compare.js

Object.compare = function (premise, supplement) {

	for (let p in premise) {
		if(premise.hasOwnProperty(p)){

			if (premise.hasOwnProperty(p) !== supplement.hasOwnProperty(p)) return false;

			switch (typeof (premise[p])) {
			case 'object':
				if (!Object.compare(premise[p], supplement[p])) return false;
				break;
			case 'function':
				if (typeof (supplement[p]) == 'undefined' || (p !== 'compare' && premise[p].toString() !== supplement[p].toString())) return false;
				break;
			default:
				if (premise[p] !== supplement[p]) return false;
			}
		}else{
			return false
		}
	}

	for (let p in supplement) {
		if( supplement.hasOwnProperty(p) ){
			if (typeof (premise[p]) == 'undefined') return false;
		}else {
			return false
		}
	}
	return true;
}

const a = {
	love: 34,
	mirror: {love: 'Mayoral', secondary: 2}
}

const b = {
	love: 34,
	mirror: {love: 'Mayoral', secondary: 2}
}

console.log(Object.compare( a, b))