Type Alias: ExtractHookHandlerArgs<Handler>

type ExtractHookHandlerArgs<Handler> =
  Handler extends HookHandler<infer A, infer B> ? [A, B] : never;

Utility type to extract argument types from a hook handler.

Extracts both the hook handler arguments and cleanup handler arguments from a HookHandler type.

Type Parameters

Type Parameter	Description
Handler	The hook handler type to extract arguments from

Returns

A tuple containing [HookArgs, CleanupArgs]

Example

type MyHandler = HookHandler<[User, Transaction], [Error | null, User]>;
type Args = ExtractHookHandlerArgs<MyHandler>;
// Args = [[User, Transaction], [Error | null, User]]