allow to type Params of RequestHandler

sveltejs · Feb 21, 2022 · b45336e · b45336e
1 parent 667a565
commit b45336e
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diff --git a/.changeset/proud-cooks-relax.md b/.changeset/proud-cooks-relax.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+allow to type `Params` of `RequestHandler`
diff --git a/packages/kit/types/index.d.ts b/packages/kit/types/index.d.ts
@@ -360,16 +360,16 @@ export interface PrerenderErrorHandler {
 	}): void;
 }
 
-export interface RequestEvent {
+export interface RequestEvent<Params = Record<string, string>> {
 	request: Request;
 	url: URL;
-	params: Record<string, string>;
+	params: Params;
 	locals: App.Locals;
 	platform: Readonly<App.Platform>;
 }
 
-export interface RequestHandler<Output extends Body = Body> {
-	(event: RequestEvent): MaybePromise<
+export interface RequestHandler<Params = Record<string, string>, Output extends Body = Body> {
+	(event: RequestEvent<Params>): MaybePromise<
 		Either<Output extends Response ? Response : EndpointOutput<Output>, Fallthrough>
 	>;
 }