Migrating my extension from MV2 has been a real pain for me. How do I prevent my extension SW from dying before a certain event (like onMessage or onStorageChanged) is triggered? this is the scenario:
1 - Send a message to contentScript from SW
2 - Wait for the contentScript to complete an operation
3 - contentScript sends a message back to SW when it's done
Unfortunately, the SW dies between steps 2 and 3. How can I prevent that?
Don't send separate messages, but use a single message cycle.
background service worker:
chrome.tabs.sendMessage(tabId, {foo: 'bar'}, response => {
// process the response
});
content script:
chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {
doSomethingAsynchronous(msg).then(sendResponse);
return true; // keep the channel open
});
This will keep the worker running for up to five minutes. If you need more than that or if you really want to send separate messages then open a new connection via chrome.runtime.connect (documentation) from your content script at the start of the cycle and repeat it every five minutes until the work is done.
