isFirefox is a boolean from pota/use/browser,
true when the user agent contains firefox. Evaluated once at
module load — prefer feature detection where you can, and reserve this
for genuine Firefox-specific branches.
Reads the boolean once and runs Firefox-only code behind the guard.
import { isFirefox } from 'pota/use/browser'
if (isFirefox) {
/* ... */
}