fix broken AdapterEntry type (#4674)

* fix broken AdapterEntry type

* stfu

Author: Rich-Harris

.changeset/pretty-bottles-listen.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix broken AdapterEntry type

packages/adapter-netlify/index.js

@@ -62,7 +62,7 @@ export default function ({ split = false, edge = edgeSetInEnvVar } = {}) {
 				if (split) {
 					throw new Error('Cannot use `split: true` alongside `edge: true`');
 				}
-				
+
 				await generate_edge_functions({ builder });
 			} else {
 				await generate_lambda_functions({ builder, esm, split, publish });

packages/kit/types/private.d.ts

@@ -23,7 +23,7 @@ export interface AdapterEntry {
 	 */
 	complete: (entry: {
 		generateManifest: (opts: { relativePath: string; format?: 'esm' | 'cjs' }) => string;
-	}) => Promise<void>;
+	}) => MaybePromise<void>;
 }
 
 // Based on https://github.com/josh-hemphill/csp-typed-directives/blob/latest/src/csp.types.ts