moeru-ai/airi · error · Error

Cannot open a DualSense controller while it is ${this.#lifec

Error message

Cannot open a DualSense controller while it is ${this.#lifecycle}.

What it means

open() is only valid from the 'closed' lifecycle state. The guard throws when open() is called while the controller is in a transitional or busy state ('opening', 'closing'), meaning a previous open/close is still in flight and the HID device cannot safely start another open sequence. A repeat open while already 'open' returns silently and never reaches this error.

Source

Thrown at packages/input-playstation-dualsense-5/src/controller.ts:64

  async open(): Promise<void> {
    if (this.#lifecycle === 'open')
      return
    if (this.#lifecycle !== 'closed')
      throw new Error(`Cannot open a DualSense controller while it is ${this.#lifecycle}.`)

    this.#lifecycle = 'opening'
    try {
      if (!this.#device.opened)
        await this.#device.open()
      if (this.#connectionType === 'bluetooth')
        await this.#device.receiveFeatureReport(0x05)
      this.#device.addEventListener('inputreport', this.#handleInputReport)
      this.#lifecycle = 'open'
    }

View on GitHub (pinned to 9c213115f8)

Solutions

1. Await the in-flight open()/close() promise before calling open() again instead of issuing concurrent lifecycle calls.
2. Track the open() promise in the caller and reuse it (memoize the promise rather than the result).
3. Retry open() after the current transition completes; the error message names the current lifecycle state to make this diagnosable.

When it happens

Trigger: Thrown at packages/input-playstation-dualsense-5/src/controller.ts:64 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of moeru-ai/airi@9c213115f8 (2026-09-02). Data as JSON: /api/errors/6239f3003aa80f30. Report an issue: GitHub.