Function onDispose

src/background/utils/preinject.js:67–70

(val)

const cache = initCache({
  lifetime: 5 * 60e3,
  onDispose(val) {
    if (IS_FIREFOX) unregisterScriptFF(val);
    cache.del(val[MORE]);
  },
});
// KEY_XXX for hooked options
const GRANT_NONE_VARS = '{GM,GM_info}';