Function baseUnset

lodash.js:4376–4406

* The base implementation of `_.unset`. * * @private * @param {Object} object The object to modify. * @param {Array|string} path The property path to unset. * @returns {boolean} Returns `true` if the property is deleted, else `false`.

(object, path)

     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     */
    function baseUnset(object, path) {
      path = castPath(path, object);

      // Prevent prototype pollution:
      // https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg
      // https://github.com/lodash/lodash/security/advisories/GHSA-f23m-r3pf-42rh
      var index = -1,
          length = path.length;

      if (!length) {
        return true;
      }

      while (++index < length) {
        var key = toKey(path[index]);

        // Always block "__proto__" anywhere in the path if it's not expected
        if (key === '__proto__' && !hasOwnProperty.call(object, '__proto__')) {
          return false;
        }

        // Block constructor/prototype as non-terminal traversal keys to prevent
        // escaping the object graph into built-in constructors and prototypes.
        if ((key === 'constructor' || key === 'prototype') && index < length - 1) {
          return false;
        }
      }

      var obj = parent(object, path);
      return obj == null || delete obj[toKey(last(path))];
    }

    /**
     * The base implementation of `_.update`.