Fix refresh for hash based URL in Preview (codesandbox#3881)

* fix(Preview): dispatch 'refresh' for hashed based URL

* refactor(preview): rename hashedURL method

* refactor(preview): use early return in hash URL handler

Author: tanmoyopenroot

packages/common/src/components/Preview/index.tsx

@@ -487,6 +487,8 @@ class BasePreview extends React.Component<Props, State> {
         back: false,
         forward: false,
       });
+
+      this.refreshHashedUrl(urlInAddressBar);
     }
   };
 
@@ -497,7 +499,10 @@ class BasePreview extends React.Component<Props, State> {
     const urlToSet = urlInAddressBar || url;
 
     if (this.element) {
-      this.element.src = urlToSet || this.currentUrl();
+      const iframeSRC = urlToSet || this.currentUrl();
+      this.element.src = iframeSRC;
+
+      this.refreshHashedUrl(iframeSRC);
     }
 
     this.setState({
@@ -507,6 +512,14 @@ class BasePreview extends React.Component<Props, State> {
     });
   };
 
+  refreshHashedUrl = url => {
+    if (!url.includes('#')) {
+      return;
+    }
+
+    dispatch({ type: 'refresh' });
+  };
+
   handleBack = () => {
     dispatch({
       type: 'urlback',