@types/bun: Reimplement WebSocket type in default environment (#19017)

bun.lock

@@ -27,10 +27,8 @@
     },
     "packages/bun-types": {
       "name": "bun-types",
-      "version": "1.2.5",
       "dependencies": {
         "@types/node": "*",
-        "@types/ws": "*",
       },
       "devDependencies": {
         "@biomejs/biome": "^1.5.3",
@@ -166,8 +164,6 @@
 
     "@types/semver": ["@types/semver@7.5.8", "", {}, "sha512-I8EUhyrgfLrcTkzV3TSsGyl1tSuPrEDzr0yd5m90UgNxQkyDXULk3b6MlQqTCpZpNtWe1K0hzclnZkTcLBe2UQ=="],
 
-    "@types/ws": ["@types/ws@8.5.11", "", { "dependencies": { "@types/node": "*" } }, "sha512-4+q7P5h3SpJxaBft0Dzpbr6lmMaqh0Jr2tbhJZ/luAwvD7ohSCniYkwz/pLxuT2h0EOa6QADgJj1Ko+TzRfZ+w=="],
-
     "@typescript-eslint/eslint-plugin": ["@typescript-eslint/eslint-plugin@7.16.1", "", { "dependencies": { "@eslint-community/regexpp": "^4.10.0", "@typescript-eslint/scope-manager": "7.16.1", "@typescript-eslint/type-utils": "7.16.1", "@typescript-eslint/utils": "7.16.1", "@typescript-eslint/visitor-keys": "7.16.1", "graphemer": "^1.4.0", "ignore": "^5.3.1", "natural-compare": "^1.4.0", "ts-api-utils": "^1.3.0" }, "peerDependencies": { "@typescript-eslint/parser": "^7.0.0", "eslint": "^8.56.0" } }, "sha512-SxdPak/5bO0EnGktV05+Hq8oatjAYVY3Zh2bye9pGZy6+jwyR3LG3YKkV4YatlsgqXP28BTeVm9pqwJM96vf2A=="],
 
     "@typescript-eslint/parser": ["@typescript-eslint/parser@7.16.1", "", { "dependencies": { "@typescript-eslint/scope-manager": "7.16.1", "@typescript-eslint/types": "7.16.1", "@typescript-eslint/typescript-estree": "7.16.1", "@typescript-eslint/visitor-keys": "7.16.1", "debug": "^4.3.4" }, "peerDependencies": { "eslint": "^8.56.0" } }, "sha512-u+1Qx86jfGQ5i4JjK33/FnawZRpsLxRnKzGE6EABZ40KxVT/vWsiZFEBBHjFOljmmV3MBYOHEKi0Jm9hbAOClA=="],
@@ -916,8 +912,6 @@
 
     "@eslint-community/eslint-utils/eslint-visitor-keys": ["eslint-visitor-keys@3.4.3", "", {}, "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag=="],
 
-    "@types/ws/@types/node": ["@types/node@20.12.14", "", { "dependencies": { "undici-types": "~5.26.4" } }, "sha512-scnD59RpYD91xngrQQLGkE+6UrHUPzeKZWhhjBSa3HSkwjbQc38+q3RoIVEwxQGRw3M+j5hpNAM+lgV3cVormg=="],
-
     "@typescript-eslint/typescript-estree/minimatch": ["minimatch@9.0.5", "", { "dependencies": { "brace-expansion": "^2.0.1" } }, "sha512-G6T0ZX48xgozx7587koeX9Ys2NYy6Gmv//P89sEte9V9whIapMNF4idKxnW2QtCcLiTWlb/wfCabAtAFWhhBow=="],
 
     "@typescript-eslint/visitor-keys/eslint-visitor-keys": ["eslint-visitor-keys@3.4.3", "", {}, "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag=="],
@@ -1008,8 +1002,6 @@
 
     "@definitelytyped/utils/which/isexe": ["isexe@3.1.1", "", {}, "sha512-LpB/54B+/2J5hqQ7imZHfdU31OlgQqx7ZicVlkm9kzg9/w8GKLEcFfJl/t7DCEDueOyBAD6zCCwTO6Fzs0NoEQ=="],
 
-    "@types/ws/@types/node/undici-types": ["undici-types@5.26.5", "", {}, "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="],
-
     "@typescript-eslint/typescript-estree/minimatch/brace-expansion": ["brace-expansion@2.0.1", "", { "dependencies": { "balanced-match": "^1.0.0" } }, "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA=="],
 
     "are-we-there-yet/readable-stream/isarray": ["isarray@1.0.0", "", {}, "sha512-VLghIWNM6ELQzo7zwmcg0NmTVyWKYjvIeM83yjp0wRDTmUnrM678fQbcKBo6n2CJEF0szoG//ytg+TKla89ALQ=="],

packages/bun-types/bun.d.ts

@@ -162,11 +162,6 @@ declare module "bun" {
     open: Event;
   }
 
-  interface EventListenerOptions {
-    /** Not directly used by Node.js. Added for API completeness. Default: `false`. */
-    capture?: boolean;
-  }
-
   interface AddEventListenerOptions extends EventListenerOptions {
     /** When `true`, the listener is automatically removed when it is first invoked. Default: `false`. */
     once?: boolean;
@@ -4264,6 +4259,211 @@ declare module "bun" {
     compact?: boolean;
   }
 
+  type WebSocketOptionsProtocolsOrProtocol =
+    | {
+        /**
+         * Protocols to use for the WebSocket connection
+         */
+        protocols?: string | string[];
+      }
+    | {
+        /**
+         * Protocol to use for the WebSocket connection
+         */
+        protocol?: string;
+      };
+
+  type WebSocketOptionsTLS = {
+    /**
+     * Options for the TLS connection
+     */
+    tls?: {
+      /**
+       * Whether to reject the connection if the certificate is not valid
+       *
+       * @default true
+       */
+      rejectUnauthorized?: boolean;
+    };
+  };
+
+  type WebSocketOptionsHeaders = {
+    /**
+     * Headers to send to the server
+     */
+    headers?: import("node:http").OutgoingHttpHeaders;
+  };
+
+  /**
+   * Constructor options for the `Bun.WebSocket` client
+   */
+  type WebSocketOptions = WebSocketOptionsProtocolsOrProtocol & WebSocketOptionsTLS & WebSocketOptionsHeaders;
+
+  interface WebSocketEventMap {
+    close: CloseEvent;
+    error: Event;
+    message: MessageEvent;
+    open: Event;
+  }
+
+  /**
+   * A WebSocket client implementation
+   *
+   * @example
+   * ```ts
+   * const ws = new WebSocket("ws://localhost:8080", {
+   *  headers: {
+   *    "x-custom-header": "hello",
+   *  },
+   * });
+   *
+   * ws.addEventListener("open", () => {
+   *   console.log("Connected to server");
+   * });
+   *
+   * ws.addEventListener("message", (event) => {
+   *   console.log("Received message:", event.data);
+   * });
+   *
+   * ws.send("Hello, server!");
+   * ws.terminate();
+   * ```
+   */
+  interface WebSocket extends EventTarget {
+    /**
+     * The URL of the WebSocket connection
+     */
+    readonly url: string;
+
+    /**
+     * Legacy URL property (same as url)
+     * @deprecated Use url instead
+     */
+    readonly URL: string;
+
+    /**
+     * The current state of the connection
+     */
+    readonly readyState:
+      | typeof WebSocket.CONNECTING
+      | typeof WebSocket.OPEN
+      | typeof WebSocket.CLOSING
+      | typeof WebSocket.CLOSED;
+
+    /**
+     * The number of bytes of data that have been queued using send() but not yet transmitted to the network
+     */
+    readonly bufferedAmount: number;
+
+    /**
+     * The protocol selected by the server
+     */
+    readonly protocol: string;
+
+    /**
+     * The extensions selected by the server
+     */
+    readonly extensions: string;
+
+    /**
+     * The type of binary data being received.
+     */
+    binaryType: "arraybuffer" | "nodebuffer";
+
+    /**
+     * Event handler for open event
+     */
+    onopen: ((this: WebSocket, ev: Event) => any) | null;
+
+    /**
+     * Event handler for message event
+     */
+    onmessage: ((this: WebSocket, ev: MessageEvent) => any) | null;
+
+    /**
+     * Event handler for error event
+     */
+    onerror: ((this: WebSocket, ev: Event) => any) | null;
+
+    /**
+     * Event handler for close event
+     */
+    onclose: ((this: WebSocket, ev: CloseEvent) => any) | null;
+
+    /**
+     * Transmits data to the server
+     * @param data The data to send to the server
+     */
+    send(data: string | ArrayBufferLike | ArrayBufferView): void;
+
+    /**
+     * Closes the WebSocket connection
+     * @param code A numeric value indicating the status code
+     * @param reason A human-readable string explaining why the connection is closing
+     */
+    close(code?: number, reason?: string): void;
+
+    /**
+     * Sends a ping frame to the server
+     * @param data Optional data to include in the ping frame
+     */
+    ping(data?: string | ArrayBufferLike | ArrayBufferView): void;
+
+    /**
+     * Sends a pong frame to the server
+     * @param data Optional data to include in the pong frame
+     */
+    pong(data?: string | ArrayBufferLike | ArrayBufferView): void;
+
+    /**
+     * Immediately terminates the connection
+     */
+    terminate(): void;
+
+    /**
+     * Registers an event handler of a specific event type on the WebSocket.
+     * @param type A case-sensitive string representing the event type to listen for
+     * @param listener The function to be called when the event occurs
+     * @param options An options object that specifies characteristics about the event listener
+     */
+    addEventListener<K extends keyof WebSocketEventMap>(
+      type: K,
+      listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any,
+      options?: boolean | AddEventListenerOptions,
+    ): void;
+    addEventListener(
+      type: string,
+      listener: EventListenerOrEventListenerObject,
+      options?: boolean | AddEventListenerOptions,
+    ): void;
+
+    /**
+     * Removes an event listener previously registered with addEventListener()
+     * @param type A case-sensitive string representing the event type to remove
+     * @param listener The function to remove from the event target
+     * @param options An options object that specifies characteristics about the event listener
+     */
+    removeEventListener<K extends keyof WebSocketEventMap>(
+      type: K,
+      listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any,
+      options?: boolean | EventListenerOptions,
+    ): void;
+    removeEventListener(
+      type: string,
+      listener: EventListenerOrEventListenerObject,
+      options?: boolean | EventListenerOptions,
+    ): void;
+
+    /** @deprecated Use instance property instead */
+    readonly CONNECTING: 0;
+    /** @deprecated Use instance property instead */
+    readonly OPEN: 1;
+    /** @deprecated Use instance property instead */
+    readonly CLOSING: 2;
+    /** @deprecated Use instance property instead */
+    readonly CLOSED: 3;
+  }
+
   /**
    * Pretty-print an object the same as {@link console.log} to a `string`
    *

packages/bun-types/globals.d.ts

@@ -11,7 +11,7 @@ declare module "bun" {
     type NodeCryptoWebcryptoSubtleCrypto = import("crypto").webcrypto.SubtleCrypto;
     type NodeCryptoWebcryptoCryptoKey = import("crypto").webcrypto.CryptoKey;
 
-    type LibEmptyOrWSWebSocket = LibDomIsLoaded extends true ? {} : import("ws").WebSocket;
+    type LibEmptyOrBunWebSocket = LibDomIsLoaded extends true ? {} : Bun.WebSocket;
 
     type LibEmptyOrNodeUtilTextEncoder = LibDomIsLoaded extends true ? {} : import("node:util").TextEncoder;
 
@@ -63,15 +63,71 @@ declare var Worker: Bun.__internal.UseLibDomIfAvailable<
   }
 >;
 
-interface WebSocket extends Bun.__internal.LibEmptyOrWSWebSocket {}
+/**
+ * A WebSocket client implementation.
+ */
+interface WebSocket extends Bun.__internal.LibEmptyOrBunWebSocket {}
 /**
  * A WebSocket client implementation
- *
- * If `DOM` is included in tsconfig `lib`, this falls back to the default DOM global `WebSocket`.
- * Otherwise (when outside of a browser environment), this will be the `WebSocket`
- * implementation from the `ws` package, which Bun implements.
  */
-declare var WebSocket: Bun.__internal.UseLibDomIfAvailable<"WebSocket", typeof import("ws").WebSocket>;
+declare var WebSocket: Bun.__internal.UseLibDomIfAvailable<
+  "WebSocket",
+  {
+    prototype: WebSocket;
+
+    /**
+     * Creates a new WebSocket instance with the given URL and options.
+     *
+     * @param url The URL to connect to.
+     * @param options The options to use for the connection.
+     *
+     * @example
+     * ```ts
+     * const ws = new WebSocket("wss://dev.local", {
+     *  protocols: ["proto1", "proto2"],
+     *  headers: {
+     *    "Cookie": "session=123456",
+     *  },
+     * });
+     * ```
+     */
+    new (url: string | URL, options?: Bun.WebSocketOptions): WebSocket;
+
+    /**
+     * Creates a new WebSocket instance with the given URL and protocols.
+     *
+     * @param url The URL to connect to.
+     * @param protocols The protocols to use for the connection.
+     *
+     * @example
+     * ```ts
+     * const ws = new WebSocket("wss://dev.local");
+     * const ws = new WebSocket("wss://dev.local", ["proto1", "proto2"]);
+     * ```
+     */
+    new (url: string | URL, protocols?: string | string[]): WebSocket;
+
+    /**
+     * The connection is not yet open
+     */
+    readonly CONNECTING: 0;
+
+    /**
+     * The connection is open and ready to communicate
+     */
+    readonly OPEN: 1;
+
+    /**
+     * The connection is in the process of closing
+     */
+    readonly CLOSING: 2;
+
+    /**
+     * The connection is closed or couldn't be opened
+     */
+    readonly CLOSED: 3;
+  }
+>;
 
 interface Crypto {
   readonly subtle: SubtleCrypto;

packages/bun-types/package.json

@@ -15,8 +15,7 @@
   ],
   "homepage": "https://bun.sh",
   "dependencies": {
-    "@types/node": "*",
+    "@types/node": "*"
-    "@types/ws": "*"
   },
   "devDependencies": {
     "@biomejs/biome": "^1.5.3",

test/integration/bun-types/bun-types.test.ts

@@ -122,7 +122,22 @@ describe("@types/bun integration test", () => {
       "error TS2339: Property 'write' does not exist on type 'ReadableByteStreamController'.",
 
       "websocket.ts",
-      "error TS2353: Object literal may only specify known properties, and 'headers' does not exist in type 'string[]'.",
+      `error TS2353: Object literal may only specify known properties, and 'protocols' does not exist in type 'string[]'.`,
+      `error TS2353: Object literal may only specify known properties, and 'protocol' does not exist in type 'string[]'.`,
+      `error TS2353: Object literal may only specify known properties, and 'protocol' does not exist in type 'string[]'.`,
+      `error TS2353: Object literal may only specify known properties, and 'headers' does not exist in type 'string[]'.`,
+      `error TS2353: Object literal may only specify known properties, and 'protocols' does not exist in type 'string[]'.`,
+      `error TS2554: Expected 2 arguments, but got 0.`,
+      `error TS2551: Property 'URL' does not exist on type 'WebSocket'. Did you mean 'url'?`,
+      `error TS2339: Property 'ping' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'ping' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'ping' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'ping' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'pong' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'pong' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'pong' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'pong' does not exist on type 'WebSocket'.`,
+      `error TS2339: Property 'terminate' does not exist on type 'WebSocket'.`,
 
       "worker.ts",
       "error TS2339: Property 'ref' does not exist on type 'Worker'.",

test/integration/bun-types/fixture/websocket.ts

@@ -1,15 +1,271 @@
-export class TestWebSocketClient {
+import { expectType } from "./utilities";
-  #ws: WebSocket;
 
-  constructor() {
+// WebSocket constructor tests
-    this.#ws = new WebSocket("wss://dev.local", {
+{
-      headers: {
+  // Constructor with string URL only
-        cookie: "test=test",
+  new WebSocket("wss://dev.local");
-      },
-    });
-  }
 
-  close() {
+  // Constructor with string URL and protocols array
-    if (this.#ws != null) this.#ws.close();
+  new WebSocket("wss://dev.local", ["proto1", "proto2"]);
-  }
+
+  // Constructor with string URL and single protocol string
+  new WebSocket("wss://dev.local", "proto1");
+
+  // Constructor with URL object only
+  new WebSocket(new URL("wss://dev.local"));
+
+  // Constructor with URL object and protocols array
+  new WebSocket(new URL("wss://dev.local"), ["proto1", "proto2"]);
+
+  // Constructor with URL object and single protocol string
+  new WebSocket(new URL("wss://dev.local"), "proto1");
+
+  // Constructor with string URL and options object with protocols
+  new WebSocket("wss://dev.local", {
+    protocols: ["proto1", "proto2"],
+  });
+
+  // Constructor with string URL and options object with protocol
+  new WebSocket("wss://dev.local", {
+    protocol: "proto1",
+  });
+
+  // Constructor with URL object and options with TLS settings
+  new WebSocket(new URL("wss://dev.local"), {
+    protocol: "proto1",
+    tls: {
+      rejectUnauthorized: false,
+    },
+  });
+
+  // Constructor with headers
+  new WebSocket("wss://dev.local", {
+    headers: {
+      "Cookie": "session=123456",
+      "User-Agent": "BunWebSocketTest",
+    },
+  });
+
+  // Constructor with full options object
+  new WebSocket("wss://dev.local", {
+    protocols: ["proto1", "proto2"],
+    headers: {
+      "Cookie": "session=123456",
+    },
+    tls: {
+      rejectUnauthorized: true,
+    },
+  });
+}
+
+// Assignability test
+{
+  function toAny<T>(value: T): any {
+    return value;
+  }
+
+  const AnySocket = toAny(WebSocket);
+
+  const ws: WebSocket = new AnySocket("wss://dev.local");
+
+  ws.close();
+  ws.addEventListener("open", e => expectType(e).is<Event>());
+  ws.addEventListener("message", e => expectType(e).is<MessageEvent>());
+  ws.addEventListener("message", (e: MessageEvent<string>) => expectType(e).is<MessageEvent<string>>());
+  ws.addEventListener("message", (e: MessageEvent<string>) => expectType(e.data).is<string>());
+}
+
+// WebSocket static properties test
+{
+  expectType(WebSocket.CONNECTING).is<0>();
+  expectType(WebSocket.OPEN).is<1>();
+  expectType(WebSocket.CLOSING).is<2>();
+  expectType(WebSocket.CLOSED).is<3>();
+
+  const instance: WebSocket = null as never;
+  expectType(instance.CONNECTING).is<0>();
+  expectType(instance.OPEN).is<1>();
+  expectType(instance.CLOSING).is<2>();
+  expectType(instance.CLOSED).is<3>();
+}
+
+// WebSocket event handlers test
+{
+  const ws = new WebSocket("wss://dev.local");
+
+  // Using event handler properties
+  ws.onopen = (event: Event) => {
+    expectType(event).is<Event>();
+  };
+
+  ws.onmessage = (event: MessageEvent<string>) => {
+    expectType(event.data).is<string>();
+  };
+
+  ws.onerror = (event: Event) => {
+    expectType(event).is<Event>();
+  };
+
+  ws.onclose = (event: CloseEvent) => {
+    expectType(event).is<CloseEvent>();
+    expectType(event.code).is<number>();
+    expectType(event.reason).is<string>();
+    expectType(event.wasClean).is<boolean>();
+  };
+
+  // Using event handler properties without typing the agument
+  ws.onopen = event => {
+    expectType(event).is<Event>();
+  };
+
+  ws.onmessage = event => {
+    expectType(event.data).is<any>();
+
+    if (typeof event.data === "string") {
+      expectType(event.data).is<string>();
+    } else if (event.data instanceof ArrayBuffer) {
+      expectType(event.data).is<ArrayBuffer>();
+    }
+  };
+
+  ws.onerror = event => {
+    expectType(event).is<Event>();
+  };
+
+  ws.onclose = event => {
+    expectType(event).is<CloseEvent>();
+    expectType(event.code).is<number>();
+    expectType(event.reason).is<string>();
+    expectType(event.wasClean).is<boolean>();
+  };
+}
+
+// WebSocket addEventListener test
+{
+  const ws = new WebSocket("wss://dev.local");
+
+  // Event handler functions
+  const handleOpen = (event: Event) => {
+    expectType(event).is<Event>();
+  };
+
+  const handleMessage = (event: MessageEvent<string>) => {
+    expectType(event.data).is<string>();
+  };
+
+  const handleError = (event: Event) => {
+    expectType(event).is<Event>();
+  };
+
+  const handleClose = (event: CloseEvent) => {
+    expectType(event).is<CloseEvent>();
+    expectType(event.code).is<number>();
+    expectType(event.reason).is<string>();
+    expectType(event.wasClean).is<boolean>();
+  };
+
+  // Add event listeners
+  ws.addEventListener("open", handleOpen);
+  ws.addEventListener("message", handleMessage);
+  ws.addEventListener("error", handleError);
+  ws.addEventListener("close", handleClose);
+
+  // Remove event listeners
+  ws.removeEventListener("open", handleOpen);
+  ws.removeEventListener("message", handleMessage);
+  ws.removeEventListener("error", handleError);
+  ws.removeEventListener("close", handleClose);
+}
+
+// WebSocket property access test
+{
+  const ws = new WebSocket("wss://dev.local");
+
+  // Read various properties
+  expectType(ws.readyState).is<0 | 2 | 1 | 3>();
+  expectType(ws.bufferedAmount).is<number>();
+  expectType(ws.url).is<string>();
+  expectType(ws.protocol).is<string>();
+  expectType(ws.extensions).is<string>();
+
+  // Legacy URL property (deprecated but exists)
+  expectType(ws.URL).is<string>();
+
+  // Set binary type
+  ws.binaryType = "arraybuffer";
+  ws.binaryType = "blob";
+}
+
+// WebSocket send method test
+{
+  const ws = new WebSocket("wss://dev.local");
+
+  // Send string data
+  ws.send("Hello, server!");
+
+  // Send ArrayBuffer
+  const buffer = new ArrayBuffer(10);
+  ws.send(buffer);
+
+  // Send ArrayBufferView (Uint8Array)
+  const uint8Array = new Uint8Array(buffer);
+  ws.send(uint8Array);
+
+  // --------------------------------------- //
+  // `.send(blob)` is not supported yet
+  // --------------------------------------- //
+  // // Send Blob
+  // const blob = new Blob(["Hello, server!"]);
+  // ws.send(blob);
+  // --------------------------------------- //
+}
+
+// WebSocket close method test
+{
+  const ws = new WebSocket("wss://dev.local");
+
+  // Close without parameters
+  ws.close();
+
+  // Close with code
+  ws.close(1000);
+
+  // Close with code and reason
+  ws.close(1001, "Going away");
+}
+
+// Bun-specific WebSocket extensions test
+{
+  const ws = new WebSocket("wss://dev.local");
+
+  // Send ping frame with no data
+  ws.ping();
+
+  // Send ping frame with string data
+  ws.ping("ping data");
+
+  // Send ping frame with ArrayBuffer
+  const pingBuffer = new ArrayBuffer(4);
+  ws.ping(pingBuffer);
+
+  // Send ping frame with ArrayBufferView
+  const pingView = new Uint8Array(pingBuffer);
+  ws.ping(pingView);
+
+  // Send pong frame with no data
+  ws.pong();
+
+  // Send pong frame with string data
+  ws.pong("pong data");
+
+  // Send pong frame with ArrayBuffer
+  const pongBuffer = new ArrayBuffer(4);
+  ws.pong(pongBuffer);
+
+  // Send pong frame with ArrayBufferView
+  const pongView = new Uint8Array(pongBuffer);
+  ws.pong(pongView);
+
+  // Terminate the connection immediately
+  ws.terminate();
 }

test/integration/bun-types/fixture/ws.ts

@@ -1,11 +0,0 @@
-import { WebSocket, WebSocketServer } from "ws";
-
-const ws = new WebSocket("ws://www.host.com/path");
-
-ws.send("asdf");
-
-const wss = new WebSocketServer({
-  port: 8080,
-  perMessageDeflate: false,
-});
-wss;