Trying Firefox again after many years on Chrome. As a developer, this is the thing I'm missing most so far. Have been using the Allow-Control-Allow-Origin: * e

Trying Firefox again after many years on Chrome. As a developer, this is the thing I'm missing most so far. Have been using the Allow-Control-Allow-Origin: * extension[1] on Chrome, while not perfect, is tolerable. 1. https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi?hl=en https://chrome.google.com/webstore/detail/allow-control-allo...