Safari iOS < 16.4 Error Regex Lookbehind

Hello
the npm package has a Regex which uses "Lookbehind" in one of its patterns.
const regExp = /(?<=^|;)\s*([^:]+)\s*:\s*([^;]+)\s*/g;
Safari on iOS doesn't support Regex Lookbehind previous to 16.4 (which was just recently released). https://caniuse.com/js-regexp-lookbehind
This leads to an error when used on an older iOS Version.
It would be good to replace the lookbehind in the pattern to increase the browser compatibilty.