initAppState(opt:

canvas: HTMLCanvasElement

touchToMouse?: boolean

gamepads?: Record<string, GamepadDef>

pixelDensity?: number

maxFPS?: number

buttons?: ButtonsDef

):

canvas: HTMLCanvasElement

buttons: ButtonsDef

buttonsByKey: Map<Key, string[]>

buttonsByMouse: Map<MouseButton, string[]>

buttonsByGamepad: Map<KGamepadButton, string[]>

buttonsByKeyCode: Map<string, string[]>

loopID: null | number

stopped: boolean

dt: number

fixedDt: number

restDt: number

time: number

realTime: number

fpsCounter: FPSCounter

timeScale: number

skipTime: boolean

isHidden: boolean

numFrames: number

mousePos: Vec2

mouseDeltaPos: Vec2

keyState: ButtonState<Key>

mouseState: ButtonState<MouseButton>

mergedGamepadState: GamepadState

gamepadStates: Map<number, GamepadState>

lastInputDevice: "mouse" | "keyboard" | "gamepad" | null

buttonState: ButtonState<string>

gamepads: KGamepad[]

charInputted: string[]

isMouseMoved: boolean

lastWidth: number

lastHeight: number

events: KEventHandler<AppEventMap>