Function hasSafeIterator

deps/undici/src/lib/core/util.js:322–326

* Checks whether an object has a safe Symbol.iterator — i.e. one that is * either own or inherited from a non-Object.prototype chain. This prevents * prototype-pollution attacks from injecting a fake iterator on * Object.prototype. * @param {object} obj * @returns {boolean}

(obj)

 * @returns {boolean}
 */
function hasSafeIterator (obj) {
  const prototype = Object.getPrototypeOf(obj)
  const ownIterator = Object.hasOwn(obj, Symbol.iterator)
  return ownIterator || (prototype != null && prototype !== Object.prototype && typeof obj[Symbol.iterator] === 'function')
}

/**
 * @param {Blob|Buffer|import ('stream').Stream} body