refactor(response-modifier): rewrite modifiers with Typescript

Bug: twpowertools:230
Change-Id: Ibedccb24445098aae87fdbca94b0868bdcfccd41
diff --git a/src/xhrInterceptor/responseModifiers/index.js b/src/xhrInterceptor/responseModifiers/index.js
index 057960f..b822153 100644
--- a/src/xhrInterceptor/responseModifiers/index.js
+++ b/src/xhrInterceptor/responseModifiers/index.js
@@ -1,9 +1,9 @@
 import MWOptionsWatcherClient from '../../common/mainWorldOptionsWatcher/Client.js';
 import {convertJSONToResponse, convertJSONToResponseText, getResponseJSON} from '../utils.js';
 
-import createMessageRemoveParentRef from './createMessageRemoveParentRef.js';
-import flattenThread from './flattenThread.js';
-import loadMoreThread from './loadMoreThread.js';
+import createMessageRemoveParentRef from './createMessageRemoveParentRef';
+import flattenThread from './flattenThread';
+import loadMoreThread from './loadMoreThread';
 
 export const responseModifiers = [
   loadMoreThread,