geoip: fix service register

packages/geoip/index.ts

@@ -13,8 +13,7 @@ export interface Result {
     display: string
 }
 
-export function apply() {
-    Context.service('geoip', class GeoIPService extends Service {
+class GeoIPService extends Service {
     provider = '<a href="http://www.maxmind.com" target="_blank">MaxMind</a>';
     lookup(ip: string, locale: string): Result {
         const res: any = reader.get(ip);
@@ -30,5 +29,8 @@ export function apply() {
         ret.display = `${ret.continent} ${ret.country}${ret.city ? ` ${ret.city}` : ''}`;
         return ret;
     }
-    });
+}
+export function apply(ctx: Context) {
+    Context.service('geoip', GeoIPService);
+    ctx.geoip = new GeoIPService(ctx, 'geoip', true);
 }