feat: add helper types

poppinss · Jun 21, 2023 · 1cd390c · 1cd390c
1 parent af010cb
commit 1cd390c
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/src/types.ts b/src/types.ts
@@ -7,6 +7,13 @@
  * file that was distributed with this source code.
  */
 
+import type { Runner } from './runner.js'
+
+/**
+ * Exporting hooks runner as a type
+ */
+export { Runner }
+
 /**
  * Shape of the cleanup handler
  */
@@ -19,6 +26,13 @@ export type HookHandler<Args extends any[], CleanUpArgs extends any[]> = (
   ...args: Args
 ) => void | CleanupHandler<CleanUpArgs> | Promise<void> | Promise<CleanupHandler<CleanUpArgs>>
 
+/**
+ * Extracts args from a hook handler type
+ */
+export type ExtractHookHandlerArgs<Handler> = Handler extends HookHandler<infer A, infer B>
+  ? [A, B]
+  : never
+
 /**
  * Hook represented as an object with handle method
  */