tor-browser

preferences-helper.js (409B)

---

window.changeEventPromise = function changeEventPromise(preference, t) {
   return Promise.race([
       new Promise(resolve => {
           navigator.preferences[preference].onchange = resolve;
       }),
       new Promise((resolve, reject) => {
           t.step_timeout(() => {
               reject(`Change event for ${preference} preference not fired.`);
           }, 500);
       })
   ]);
}