migrate i18n helper.js some code to typescript and migrate vue file to composition API and typescript

src/lib/map/amap.ts

@@ -19,7 +19,7 @@ export class AmapMapProvider implements MapProvider {
     }
 
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    public asyncLoadAssets(language: string): Promise<unknown> {
+    public asyncLoadAssets(language?: string): Promise<unknown> {
         if (AmapMapProvider.AMap) {
             return Promise.resolve();
         }

src/lib/map/baidumap.ts

@@ -18,7 +18,7 @@ export class BaiduMapProvider implements MapProvider {
     }
 
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    public asyncLoadAssets(language: string): Promise<unknown> {
+    public asyncLoadAssets(language?: string): Promise<unknown> {
         if (BaiduMapProvider.BMap) {
             return Promise.resolve();
         }

src/lib/map/base.ts

@@ -1,6 +1,6 @@
 export interface MapProvider {
     getWebsite(): string;
-    asyncLoadAssets(language: string): Promise<unknown>;
+    asyncLoadAssets(language?: string): Promise<unknown>;
     createMapInstance(): MapInstance | null;
 }
 

src/lib/map/googlemap.ts

@@ -15,7 +15,7 @@ export class GoogleMapProvider implements MapProvider {
         return 'https://maps.google.com';
     }
 
-    public asyncLoadAssets(language: string): Promise<unknown> {
+    public asyncLoadAssets(language?: string): Promise<unknown> {
         if (GoogleMapProvider.GoogleMap) {
             return Promise.resolve();
         }

src/lib/map/index.ts

@@ -9,7 +9,7 @@ import { AmapMapProvider } from './amap.ts';
 
 let mapProvider: MapProvider | null = null;
 
-export function initMapProvider(language: string): void {
+export function initMapProvider(language?: string): void {
     const mapProviderType = getMapProvider();
 
     if (LEAFLET_TILE_SOURCES[mapProviderType] || mapProviderType === 'custom') {

src/lib/map/leaflet.ts

@@ -36,7 +36,7 @@ export class LeafletMapProvider implements MapProvider {
     }
 
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    public asyncLoadAssets(language: string): Promise<unknown> {
+    public asyncLoadAssets(language?: string): Promise<unknown> {
         return Promise.all([
             import('leaflet/dist/leaflet.css'),
             import('leaflet/dist/leaflet-src.esm.js').then(leaflet => LeafletMapProvider.Leaflet = leaflet)