ref: better type support in server side script

fix: a typo in return message at api/database/song/[id]

package.json

@@ -1,6 +1,6 @@
 {
   "name": "aquavox",
-  "version": "1.10.2",
+  "version": "1.12.13",
   "private": false,
   "scripts": {
     "dev": "vite dev",

src/routes/api/database/search/+server.ts

@@ -1,16 +1,17 @@
 import { songNameCache } from '$lib/server/cache.js';
 import { loadData } from '$lib/server/database/loadData';
-import { json, error } from '@sveltejs/kit';
+import { error, json } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
 
-export async function GET({ url }) {
+export const GET: RequestHandler = async ({ url }) => {
-    const keyword = url.searchParams.get("keyword");
+    const keyword = url.searchParams.get('keyword');
 
-    loadData();
+    await loadData();
 
     if (keyword === null) {
         return error(400, {
-            "message": "Miss parameter: keyword"
+            'message': 'Miss parameter: keyword'
-        })
+        });
     }
 
     const resultList: MusicMetadata[] = [];
@@ -22,6 +23,6 @@ export async function GET({ url }) {
     }
 
     return json({
-        "result": resultList
+        'result': resultList
     });
-}
+};

src/routes/api/database/song/[id]/+server.ts

@@ -1,19 +1,20 @@
 import { getCurrentFormattedDateTime } from '$lib/songUpdateTime';
 import { json, error } from '@sveltejs/kit';
 import fs from 'fs';
+import type { RequestHandler } from './$types';
 
-export async function GET({ params }) {
+export const GET: RequestHandler = async ({ params }) => {
     const filePath = `./data/song/${params.id}.json`;
     if (!fs.existsSync(filePath)) {
         return error(404, {
-            message: "No correspoding song."
+            message: "No corresponding song."
         })
     }
     const data = fs.readFileSync(filePath);
 	return json(JSON.parse(data.toString()));
 }
 
-export async function POST({ params, request }) {
+export const POST: RequestHandler = async ({ request, params }) => {
     const timeStamp = new Date().getTime();
     if (!fs.existsSync("./data/pending/")) {
         fs.mkdirSync("./data/pending");

src/routes/api/database/songs/+server.ts

@@ -1,8 +1,9 @@
 import { songData } from '$lib/server/cache.js';
 import { loadData } from '$lib/server/database/loadData.js';
 import { json } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
 
-export async function GET({ url }) {
+export const GET: RequestHandler = async ({ url }) => {
     const limit = parseInt(url.searchParams.get("limit") ?? "20");
     const offset = parseInt(url.searchParams.get("offset") ?? "0");
     loadData();

src/routes/database/edit/[id]/+page.server.ts

@@ -1,8 +1,8 @@
-/** @type {import('./$types').PageLoad} */
+import type { PageServerLoad } from './$types';
 import fs from 'fs';
 
 
-export function load({ params }) {
+export const load: PageServerLoad = ({ params }) => {
     const filePath = `./data/song/${params.id}.json`;
     if (!fs.existsSync(filePath)) {
         return {