deep-comparison.ts

const deepCompare = (source: unknown | unknown[], target: unknown | unknown[]): boolean => {
  if (typeOf(source) !== typeOf(target)) {
    return false;
  }

  if (typeOf(source) === 'array') {
    if ((source as unknown[]).length !== (target as unknown[]).length) {
      return false;
    }
    
    return (source as unknown[]).every((entry, index) => deepCompare(entry, (target  as unknown[])[index]))
  } else if (typeOf(source) === 'object') {
    if (Object.keys(source).length !== Object.keys(target).length) {
      return false;
    }
    
    return Object.keys(source).every((key) => deepCompare((source as Record<string, unknown>)[key], (target as Record<string, unknown>)[key]));
  } else if (typeOf(source) === 'date') {
    return source.getTime() === target.getTime();
  }

  return source === target;
};