convert to chrome

background.js

@@ -1,16 +1,33 @@
-browser.runtime.onMessage.addListener((message, sender, sendResponse) => {
-  if (message.type === "COOKIE") {
-    return browser.cookies.get({
-      url: message.url,
-      name: message.key
-    });
-    // const cookie = await browser.cookies.get({
-    //   url: message.url,
-    //   name: message.key
-    // });
-    // console.log(cookie)
-    // sendResponse({"cookie":cookie});
-  } else {
-    throw `Unkown message type ${message.type}`
+const extensionApi = globalThis.browser ?? globalThis.chrome;
+
+extensionApi.runtime.onMessage.addListener((message, sender, sendResponse) => {
+  if (message.type !== "COOKIE") {
+    sendResponse({ error: `Unknown message type ${message.type}` });
+    return false;
   }
+
+  const details = {
+    url: message.url,
+    name: message.key
+  };
+
+  if (globalThis.browser?.cookies?.get) {
+    extensionApi.cookies.get(details)
+      .then((cookie) => sendResponse(cookie))
+      .catch((error) => sendResponse({ error: error.message }));
+    return true;
+  }
+
+  extensionApi.cookies.get(details, (cookie) => {
+    const runtimeError = extensionApi.runtime.lastError;
+
+    if (runtimeError) {
+      sendResponse({ error: runtimeError.message });
+      return;
+    }
+
+    sendResponse(cookie);
+  });
+
+  return true;
 });