5445117558

module.exports = isMessagePortLike

/**
 * Check if a value is a MessagePort-like object with `on` and `postMessage`
 * methods
 *
 * @param {any} value
 * @returns {value is (MessagePort | MessagePortNode | MessagePortLike)}
 */
function isMessagePortLike(value) {
  if (typeof value !== 'object' || value === null) return false
  if (
    typeof window !== 'undefined' &&
    'MessagePort' in window &&
    value instanceof window.MessagePort
  ) {
    return true
  } else if (
    typeof value.on === 'function' &&
    typeof value.off === 'function' &&
    typeof value.postMessage === 'function'
  ) {
    return true
  }
  return false
}

1	module.exports = isMessagePortLike	9✔
2
3	/**
4	* Check if a value is a MessagePort-like object with `on` and `postMessage`
5	* methods
6	*
7	* @param {any} value
8	* @returns {value is (MessagePort \| MessagePortNode \| MessagePortLike)}
9	*/
10	function isMessagePortLike(value) {
11	if (typeof value !== 'object' \|\| value === null) return false	273!
12	if (	273!
13	typeof window !== 'undefined' &&	273!
14	'MessagePort' in window &&
15	value instanceof window.MessagePort
16	) {
17	return true	×
18	} else if (	273✔
19	typeof value.on === 'function' &&	819✔
20	typeof value.off === 'function' &&
21	typeof value.postMessage === 'function'
22	) {
23	return true	132✔
24	}
25	return false	141✔
26	}

gmaclennan / rpc-reflector / 5445117558

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