初始化

node_modules/undici/lib/web/websocket/stream/websocketerror.js

@@ -0,0 +1,104 @@
+'use strict'
+
+const { webidl } = require('../../webidl')
+const { validateCloseCodeAndReason } = require('../util')
+const { kConstruct } = require('../../../core/symbols')
+const { kEnumerableProperty } = require('../../../core/util')
+
+function createInheritableDOMException () {
+  // https://github.com/nodejs/node/issues/59677
+  class Test extends DOMException {
+    get reason () {
+      return ''
+    }
+  }
+
+  if (new Test().reason !== undefined) {
+    return DOMException
+  }
+
+  return new Proxy(DOMException, {
+    construct (target, args, newTarget) {
+      const instance = Reflect.construct(target, args, target)
+      Object.setPrototypeOf(instance, newTarget.prototype)
+      return instance
+    }
+  })
+}
+
+class WebSocketError extends createInheritableDOMException() {
+  #closeCode
+  #reason
+
+  constructor (message = '', init = undefined) {
+    message = webidl.converters.DOMString(message, 'WebSocketError', 'message')
+
+    // 1. Set this 's name to " WebSocketError ".
+    // 2. Set this 's message to message .
+    super(message, 'WebSocketError')
+
+    if (init === kConstruct) {
+      return
+    } else if (init !== null) {
+      init = webidl.converters.WebSocketCloseInfo(init)
+    }
+
+    // 3. Let code be init [" closeCode "] if it exists , or null otherwise.
+    let code = init.closeCode ?? null
+
+    // 4. Let reason be init [" reason "] if it exists , or the empty string otherwise.
+    const reason = init.reason ?? ''
+
+    // 5. Validate close code and reason with code and reason .
+    validateCloseCodeAndReason(code, reason)
+
+    // 6. If reason is non-empty, but code is not set, then set code to 1000 ("Normal Closure").
+    if (reason.length !== 0 && code === null) {
+      code = 1000
+    }
+
+    // 7. Set this 's closeCode to code .
+    this.#closeCode = code
+
+    // 8. Set this 's reason to reason .
+    this.#reason = reason
+  }
+
+  get closeCode () {
+    return this.#closeCode
+  }
+
+  get reason () {
+    return this.#reason
+  }
+
+  /**
+   * @param {string} message
+   * @param {number|null} code
+   * @param {string} reason
+   */
+  static createUnvalidatedWebSocketError (message, code, reason) {
+    const error = new WebSocketError(message, kConstruct)
+    error.#closeCode = code
+    error.#reason = reason
+    return error
+  }
+}
+
+const { createUnvalidatedWebSocketError } = WebSocketError
+delete WebSocketError.createUnvalidatedWebSocketError
+
+Object.defineProperties(WebSocketError.prototype, {
+  closeCode: kEnumerableProperty,
+  reason: kEnumerableProperty,
+  [Symbol.toStringTag]: {
+    value: 'WebSocketError',
+    writable: false,
+    enumerable: false,
+    configurable: true
+  }
+})
+
+webidl.is.WebSocketError = webidl.util.MakeTypeAssertion(WebSocketError)
+
+module.exports = { WebSocketError, createUnvalidatedWebSocketError }