devtools/client/styleeditor/test/iframe_service_worker.js


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"use strict";

self.onfetch = function (event) {
  if (event.request.url.includes("sheet.css")) {
    return event.respondWith(new Response("* { color: green; }"));
  }
  return null;
};

self.onactivate = function (event) {
  event.waitUntil(self.clients.claim());
};