ladybird/Libraries/LibWeb/Gamepad/GamepadHapticActuator.idl

// https://w3c.github.io/gamepad/#gamepadhapticsresult-enum
enum GamepadHapticsResult {
    "complete",
    "preempted"
};

// https://w3c.github.io/gamepad/#gamepadhapticeffecttype-enum
enum GamepadHapticEffectType {
    "dual-rumble",
    "trigger-rumble"
};

// https://w3c.github.io/gamepad/#gamepadeffectparameters-dictionary
dictionary GamepadEffectParameters {
    unsigned long long duration = 0;
    unsigned long long startDelay = 0;
    double strongMagnitude = 0.0;
    double weakMagnitude = 0.0;
    double leftTrigger = 0.0;
    double rightTrigger = 0.0;
};

// https://w3c.github.io/gamepad/#gamepadhapticactuator-interface
[Exposed=Window]
interface GamepadHapticActuator {
    [SameObject] readonly attribute FrozenArray<GamepadHapticEffectType> effects;
    Promise<GamepadHapticsResult> playEffect(GamepadHapticEffectType type, optional GamepadEffectParameters params = {});
    Promise<GamepadHapticsResult> reset();
};