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https://bytemaster.io/compare-objects-javascript

function deepIsEqual(first, second) {
    // If first and second are the same type and have the same value
    // Useful if strings or other primitive types are compared
    if (first === second) return true;

    // Try a quick compare by seeing if the length of properties are the same
    let firstProps = Object.getOwnPropertyNames(first);
    let secondProps = Object.getOwnPropertyNames(second);

    // Check different amount of properties
    if (firstProps.length !== secondProps.length) return false;

    // Go through properties of first object
    for (var i = 0; i < firstProps.length; i++) {
        let prop = firstProps[i];
        // Check the type of property to perform different comparisons
        switch (typeof first[prop]) {
            // If it is an object, decend for deep compare
            case 'object':
                if (!deepIsEqual(first[prop], second[prop])) return false;
                break;
            case 'number':
                // with JavaScript NaN != NaN so we need a special check
                if (isNaN(first[prop]) && isNaN(second[prop])) break;
            default:
                if (first[prop] !== second[prop]) return false;
        }
    }
    return true;
}