clean code

lib/models/page.js

@@ -1018,13 +1018,13 @@ module.exports = function(crowi) {
   };
 
   pageSchema.statics.updatePage = async function(pageData, body, user, options) {
-    var Page = this
+    const Page = this
       , Revision = crowi.model('Revision')
       , grant = options.grant || null
       , grantUserGroupId = options.grantUserGroupId || null
       ;
     // update existing page
-    var newRevision = await Revision.prepareRevision(pageData, body, user);
+    const newRevision = await Revision.prepareRevision(pageData, body, user);
 
     const revision = await Page.pushRevision(pageData, newRevision, user);
     const savedPage = await Page.findPageByPath(revision.path).populate('revision').populate('creator');
@@ -1037,7 +1037,7 @@ module.exports = function(crowi) {
   };
 
   pageSchema.statics.deletePage = function(pageData, user, options) {
-    var Page = this
+    const Page = this
       , newPath = Page.getDeletedPageName(pageData.path)
       , isTrashed = checkIfTrashed(pageData.path)
       ;