Intercept property access recursively in javascript

intercept.ts

function intercept<T extends {}>(
  obj: T,
  callback: (path: string) => void,
  path: string[] = []
): T {
  function isPlainObject(obj: unknown) {
    return Object.prototype.toString.call(obj) === '[object Object]';
  }

  const proxy = new Proxy(obj, {
    get(target, property) {
      if (Array.isArray(target[property]) || isPlainObject(target[property])) {
        if (Array.isArray(target)) {
          return intercept(target[property], callback, [
            ...path.slice(0, -1),
            path.at(-1) + '[*]',
          ]);
        }
        return intercept(target[property], callback, [
          ...path,
          String(property),
        ]);
      }

      if (target?.hasOwnProperty(property) && !Array.isArray(target)) {
        callback([...path, String(property)].join('.'));
      }

      return target[property];
    },
  });
  return proxy;
}