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1'use strict'2 3const { webidl } = require('../../webidl')4const { validateCloseCodeAndReason } = require('../util')5const { kConstruct } = require('../../../core/symbols')6const { kEnumerableProperty } = require('../../../core/util')7 8function createInheritableDOMException () {9  // https://github.com/nodejs/node/issues/5967710  class Test extends DOMException {11    get reason () {12      return ''13    }14  }15 16  if (new Test().reason !== undefined) {17    return DOMException18  }19 20  return new Proxy(DOMException, {21    construct (target, args, newTarget) {22      const instance = Reflect.construct(target, args, target)23      Object.setPrototypeOf(instance, newTarget.prototype)24      return instance25    }26  })27}28 29class WebSocketError extends createInheritableDOMException() {30  #closeCode31  #reason32 33  constructor (message = '', init = undefined) {34    message = webidl.converters.DOMString(message, 'WebSocketError', 'message')35 36    // 1. Set this 's name to " WebSocketError ".37    // 2. Set this 's message to message .38    super(message, 'WebSocketError')39 40    if (init === kConstruct) {41      return42    } else if (init !== null) {43      init = webidl.converters.WebSocketCloseInfo(init)44    }45 46    // 3. Let code be init [" closeCode "] if it exists , or null otherwise.47    let code = init.closeCode ?? null48 49    // 4. Let reason be init [" reason "] if it exists , or the empty string otherwise.50    const reason = init.reason ?? ''51 52    // 5. Validate close code and reason with code and reason .53    validateCloseCodeAndReason(code, reason)54 55    // 6. If reason is non-empty, but code is not set, then set code to 1000 ("Normal Closure").56    if (reason.length !== 0 && code === null) {57      code = 100058    }59 60    // 7. Set this 's closeCode to code .61    this.#closeCode = code62 63    // 8. Set this 's reason to reason .64    this.#reason = reason65  }66 67  get closeCode () {68    return this.#closeCode69  }70 71  get reason () {72    return this.#reason73  }74 75  /**76   * @param {string} message77   * @param {number|null} code78   * @param {string} reason79   */80  static createUnvalidatedWebSocketError (message, code, reason) {81    const error = new WebSocketError(message, kConstruct)82    error.#closeCode = code83    error.#reason = reason84    return error85  }86}87 88const { createUnvalidatedWebSocketError } = WebSocketError89delete WebSocketError.createUnvalidatedWebSocketError90 91Object.defineProperties(WebSocketError.prototype, {92  closeCode: kEnumerableProperty,93  reason: kEnumerableProperty,94  [Symbol.toStringTag]: {95    value: 'WebSocketError',96    writable: false,97    enumerable: false,98    configurable: true99  }100})101 102webidl.is.WebSocketError = webidl.util.MakeTypeAssertion(WebSocketError)103 104module.exports = { WebSocketError, createUnvalidatedWebSocketError }105