Fix opts as constant

Author: GavinMendelGleason

lib/woqlClient.js

@@ -1484,8 +1484,8 @@ WOQLClient.prototype.getDiff = function (before, after, options) {
       new Error(ErrorMessage.getInvalidParameterMessage(CONST.GET_DIFF, errmsg)),
     );
   }
-  let opt = (typeof options === 'undefined') ? {} : options
-  const payload = {before, after, ...opt}
+  const opt = (typeof options === 'undefined') ? {} : options;
+  const payload = { before, after, ...opt };
 
   return this.dispatch(
     CONST.POST,
@@ -1516,8 +1516,10 @@ WOQLClient.prototype.getVersionObjectDiff = function (id, beforeVersion, after,
       new Error(ErrorMessage.getInvalidParameterMessage(CONST.GET_DIFF, errmsg)),
     );
   }
-  let opt = (typeof options === 'undefined') ? {} : options
-  const payload = { document_id: id, before_data_version: beforeVersion, after, ...opt};
+  const opt = (typeof options === 'undefined') ? {} : options;
+  const payload = {
+    document_id: id, before_data_version: beforeVersion, after, ...opt,
+  };
   return this.dispatch(
     CONST.POST,
     this.connectionConfig.diffURL(),
@@ -1547,12 +1549,12 @@ WOQLClient.prototype.getVersionDiff = function (id, beforeVersion, afterVersion,
       new Error(ErrorMessage.getInvalidParameterMessage(CONST.GET_DIFF, errmsg)),
     );
   }
-  let opt = (typeof options === 'undefined') ? {} : options
+  const opt = (typeof options === 'undefined') ? {} : options;
   const payload = {
     document_id: id,
     before_data_version: beforeVersion,
     after_data_version: afterVersion,
-    ...opt
+    ...opt,
   };
   return this.dispatch(
     CONST.POST,