feat: Typings for page routes

Author: elliott-with-the-longest-name-on-github

packages/kit/src/core/sync/write_types/index.js

@@ -442,6 +442,15 @@ function process_node(node, outdir, is_page, proxies, all_pages_have_load = true
 
 	exports.push(`export type ${prefix}Data = ${data};`);
 
+	if (
+		proxies?.server?.exports.includes('entries') ||
+		proxies?.universal?.exports.includes('entries')
+	) {
+		exports.push(
+			`export type EntryGenerator = () => Promise<Array<RouteParams>> | Array<RouteParams>;`
+		);
+	}
+
 	return { declarations, exports, proxies };
 
 	/**
@@ -560,7 +569,7 @@ function replace_ext_with_js(file_path) {
  * @returns {Omit<NonNullable<Proxy>, 'file_name'> | null}
  */
 export function tweak_types(content, is_server) {
-	const names = new Set(is_server ? ['load', 'actions'] : ['load']);
+	const names = new Set(is_server ? ['load', 'actions', 'entries'] : ['load', 'entries']);
 
 	try {
 		let modified = false;