removalOptions Optional

object. A browsingData.RemovalOptions object. This parameter has no effect.

A Promise that will be fulfilled with no arguments when the removal has finished. If any error occurs, the promise will be rejected with an error message.

Clear the browser cache:

function onRemoved() {
  console.log("removed");
}

function onError(error) {
  console.error(error);
}

browser.browsingData.removeCache({}).then(onRemoved, onError);