Do we need to remove event listeners from background service workers in chrome extensions when they are suspended?

When developing my chrome extension background service worker, I am incorporating listeners like 

chrome.tabs.onRemoved.addListener
. As stated in the documentation here: https://developer.chrome.com/docs/extensions/mv3/service_workers/#unloading, it mentions that:

Service workers automatically unload after a period of inactivity.

Does this imply that I don't need to implement logic to remove my listeners when the worker is suspended? For example, calling removeListener such as 

chrome.tabs.onRemoved.removeListener
on browser.runtime.onSuspend.

javascriptgoogle-chrome-extensionservice-workerchrome-extension-manifest-v3

Answer №1

Not quite.

When you set up a listener in Chrome, it create an internal record that your extension's background script should be activated when the specified event occurs in the future. However, if you delete the listener, Chrome will not activate your background script for that particular event.

By the way, instead of reading a confusing article about service workers, just remember this: the MV3 background script is basically the same as an MV2 background script with "persistent": false, minus some features related to regular tabs/windows like DOM and XMLHttpRequest.

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