I have a Chrome Extension which has an chrome.webRequest.onBeforeRequest handler, with ["requestBody", "blocking"] params.

I want to call an async function inside the background script from within this handler.

Currently I use chrome.tabs.sendMessage to pass a message to the content script which then receives it and sends a message to the background using chrome.extension.sendMessage, which receives it and calls the said async function.

Both the background & content script are using chrome.runtime.onMessage to listen to those messages.

This feels like a pretty messy workaround - I guess I don't need the content script to act as proxy.
Can I trigger an async function from within the onBeforeRequest handler directly?