feat(ts) convert service/statistics/constants to typescript

service/statistics/constants.js

-const Constants = {
-    LOCAL_JID: 'local'
-};
-
-module.exports = Constants;

service/statistics/constants.spec.ts

 describe( "/service/statistics/constants members", () => {
     const {
         LOCAL_JID,
-        Constants,
         ...others
-    } = exported as any; // TODO: remove cast after typescript conversion
+    } = exported;
 
     it( "known members", () => {
         expect( LOCAL_JID ).toBe( 'local' );
-        if ( Constants ) {
-            expect( Constants.LOCAL_JID ).toBe( 'local' );
-        }
     } );
 
     it( "unknown members", () => {

service/statistics/constants.ts

+export const LOCAL_JID = 'local'

types/auto/service/statistics/constants.d.ts

-export const LOCAL_JID: string;
+export declare const LOCAL_JID = "local";