try revert getAppPath

src/browser/browserApi.ts

@@ -133,6 +133,16 @@ export class BrowserApi {
         }
     }
 
+    static getAssetUrl(path: string): Promise<string> {
+        if (BrowserApi.isChromeApi) {
+            return Promise.resolve(chrome.extension.getURL(path));
+        } else if (BrowserApi.isSafariApi) {
+            return SafariApp.sendMessageToApp('getAppPath');
+        } else {
+            return Promise.resolve(null);
+        }
+    }
+
     static messageListener(name: string, callback: (message: any, sender: any, response: any) => void) {
         if (BrowserApi.isChromeApi) {
             chrome.runtime.onMessage.addListener((msg: any, sender: any, response: any) => {

src/safari/safari/SafariExtensionViewController.swift

@@ -205,6 +205,13 @@ class SafariExtensionViewController: SFSafariExtensionViewController, WKScriptMe
                     }
                 }
             }
+        } else if command == "getAppPath" {
+            SFSafariExtension.getBaseURI(completionHandler: { uri in
+                if uri != nil {
+                    m!.responseData = uri!.absoluteString
+                    self.replyMessage(message: m!)
+                }
+            })
         }
     }