add the code for the logger

2021-03-19_axios-01-start/src/main.js

@@ -10,3 +10,11 @@ new Vue({
   store,
   render: h => h(App)
 })
+
+if (module.hot) {
+  module.hot.accept(); // already had this init code
+
+  module.hot.addStatusHandler(status => {
+    if (status === 'prepare') console.clear();
+  });
+}