fix: type event.$fetch and event.fetch

src/runtime/app.ts

@@ -3,7 +3,6 @@ import {
   createApp,
   createRouter,
   eventHandler,
-  H3Event,
   lazyEventHandler,
   Router,
   toNodeListener,
@@ -16,10 +15,11 @@ import {
   createFetch as createLocalFetch,
 } from "unenv/runtime/fetch/index";
 import { createHooks, Hookable } from "hookable";
-import { NitroRuntimeHooks } from "./types";
+import type { NitroRuntimeHooks } from "./types";
 import { useRuntimeConfig } from "./config";
 import { cachedEventHandler } from "./cache";
 import { createRouteRulesHandler, getRouteRulesForPath } from "./route-rules";
+import type { $Fetch, NitroFetchRequest } from "nitropack";
 import { plugins } from "#internal/nitro/virtual/plugins";
 import errorHandler from "#internal/nitro/virtual/error-handler";
 import { handlers } from "#internal/nitro/virtual/server-handlers";
@@ -69,9 +69,11 @@ function createNitroApp(): NitroApp {
       }
       // Assign bound fetch to context
       event.fetch = (req, init) =>
-        fetchWithEvent(event, req as any, init, { fetch: localFetch });
-      event.$fetch = (req, init) =>
-        fetchWithEvent(event, req as any, init, { fetch: $fetch });
+        fetchWithEvent(event, req, init, { fetch: localFetch });
+      event.$fetch = ((req, init) =>
+        fetchWithEvent(event, req, init as RequestInit, {
+          fetch: $fetch,
+        })) as $Fetch<unknown, NitroFetchRequest>;
     })
   );
 

src/runtime/types.ts

@@ -1,6 +1,6 @@
 import type { H3Event } from "h3";
+import type { RenderResponse } from "./renderer";
 
-import type { RenderResponse } from "./types";
 export type { NitroApp } from "./app";
 export type {
   CacheEntry,
@@ -11,15 +11,6 @@ export type {
 export type { NitroAppPlugin } from "./plugin";
 export type { RenderResponse, RenderHandler } from "./renderer";
 
-declare module "h3" {
-  interface H3Event {
-    /** @experimental Calls fetch with same context and request headers */
-    fetch: typeof globalThis.fetch;
-    /** @experimental Calls fetch with same context and request headers */
-    $fetch: typeof globalThis.fetch;
-  }
-}
-
 export interface NitroRuntimeHooks {
   "render:response": (
     response: Partial<RenderResponse>,

src/types/h3.ts

@@ -0,0 +1,19 @@
+import type { NitroFetchRequest, $Fetch } from "./fetch";
+
+export type H3EventFetch = (
+  request: NitroFetchRequest,
+  init?: RequestInit
+) => Promise<Response>;
+
+export type H3Event$Fetch = $Fetch<unknown, NitroFetchRequest>;
+
+declare module "h3" {
+  interface H3Event {
+    /** @experimental Calls fetch with same context and request headers */
+    fetch: H3EventFetch;
+    /** @experimental Calls fetch with same context and request headers */
+    $fetch: H3Event$Fetch;
+  }
+}
+
+export {};

src/types/index.ts

@@ -1,5 +1,6 @@
 export * from "./fetch";
 export * from "./global";
+export * from "./h3";
 export * from "./serialize";
 export * from "./nitro";
 export * from "./handler";

types.d.ts

@@ -1,2 +1,2 @@
-export * from './dist/index'
-export * from './dist/runtime/types'
+export * from "./dist/index";
+export * from "./dist/runtime/types";