feat-next: call the page reload just once (#655)

Author: vtrifonov

hot-loader-helper.js

@@ -2,10 +2,14 @@ module.exports.reload = function(type) { return `
     if (module.hot) {
         module.hot.accept();
         module.hot.dispose(() => {
+            global.__hmrNeedReload = true;
             setTimeout(() => {
-                global.__hmrLivesyncBackup();
+                if(global.__hmrNeedReload) {
+                    global.__hmrNeedReload = false;
+                    global.__hmrLivesyncBackup();
+                }
             }, ${type === 'style' ? "global.__hmrInitialSync ? 1000 : 0" : 0});
         })
     }
 `};
-// we need to add a timeout of 1000 if we have a css change, otherwise the app crashes on initial hmr sync
+// we need to add a timeout of 1000 if we have a css change, otherwise the app crashes on initial hmr sync