support async and sync function handlers (#28)

slackapi · Apr 18, 2022 · 2d551dc · 2d551dc
1 parent c07892d
commit 2d551dc
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/src/functions/types.ts b/src/functions/types.ts
@@ -24,12 +24,22 @@ export type FunctionInvocationBody = {
   };
 };
 
-export type FunctionHandler<InputParameters, OutputParameters> = {
+type AsyncFunctionHandler<InputParameters, OutputParameters> = {
   (
     context: FunctionContext<InputParameters>,
   ): Promise<FunctionHandlerReturnArgs<OutputParameters>>;
 };
 
+type SyncFunctionHandler<InputParameters, OutputParameters> = {
+  (
+    context: FunctionContext<InputParameters>,
+  ): FunctionHandlerReturnArgs<OutputParameters>;
+};
+
+export type FunctionHandler<InputParameters, OutputParameters> =
+  | AsyncFunctionHandler<InputParameters, OutputParameters>
+  | SyncFunctionHandler<InputParameters, OutputParameters>;
+
 type SuccessfulFunctionReturnArgs<OutputParameters> = {
   completed?: boolean;
   outputs: OutputParameters;