Type Alias HandlerCallback<C, R>

HandlerCallback: (update: Update, context: C) => Promise<R> | R

Standard callback function signature for update handlers.

Type Parameters

C extends CallbackContext = CallbackContext
Type of the callback context.
R = unknown
Return value type from the handler callback.

Type Declaration

- (update: Update, context: C): Promise<R> | R
- Parameters
  - update: Update
    The incoming Telegram update object.
  - context: C
    The execution context with bot client and stored state.
  Returns Promise<R> | R
  Resolves with the result returned by the handler callback.