deep copy js

copy.ts

export const clone = <O extends unknown | unknown[]>(value: O, history?: Set<unknown>): O => {
  if (value == null || typeof value !== "object") return value;

  const stack = history || new WeakSet();

  if (stack.has(value)) {
    return value;
  }

  stack.add(value);

  if (Array.isArray(value)) return value.map((element) => clone(element, stack)) as O;

  const newObject: Record<string | number | symbol, unknown> = {};

  // eslint-disable-next-line guard-for-in
  for (const key in value) {
    newObject[key] = clone(value[key], stack);
  }

  return newObject as O;
};