oven-sh/bun · error · Error

Inspector does not offer a URL

Error message

Inspector does not offer a URL

What it means

Error "Inspector does not offer a URL" thrown in oven-sh/bun.

Source

Thrown at packages/bun-debug-adapter-protocol/src/debugger/adapter.ts:330

    this.#breakpoints = new Map();
    this.#futureBreakpoints = new Map();
    this.#functionBreakpoints = new Map();
    this.#targets = new Map();
    this.#variableId = 1;
    this.#variables = new Map();
  }

  /**
   * Gets the inspector url. This is deprecated and exists for compat.
   * @deprecated You should get the inspector directly (with .getInspector()), and if it's a WebSocketInspector you can access `.url` direclty.
   */
  get url(): string {
    // This code has been migrated from a time when the inspector was always a WebSocketInspector.
    if (this.inspector instanceof WebSocketInspector) {
      return this.inspector.url;
    }

    throw new Error("Inspector does not offer a URL");
  }

  public getInspector() {
    return this.inspector;
  }

  abstract start(...args: unknown[]): Promise<boolean>;

  /**
   * Sends a request to the JavaScript inspector.
   * @param method the method name
   * @param params the method parameters
   * @returns the response
   * @example
   * const { result, wasThrown } = await adapter.send("Runtime.evaluate", {
   *   expression: "1 + 1",
   * });
   * console.log(result.value); // 2

View on GitHub (pinned to 8c5296ac45)

When it happens

Trigger: Thrown at packages/bun-debug-adapter-protocol/src/debugger/adapter.ts:330 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of oven-sh/bun@8c5296ac45 (2026-08-16). Data as JSON: /api/errors/8ea1bdb0bbed5708. Report an issue: GitHub.