Offloading Main Thread: Improving Web Performance with PartyTown
summary
Library PartyTown moves third‑party scripts into a web worker so page JavaScript stops getting blocked, using a service worker plus synchronous XHR proxy calls when a worker needs main‑thread values. Installation copies PartyTown files to the public folder and decorates scripts with type='text/partytown', requires same‑origin hosting for those scripts. Demo shifts total blocking time from ~1420 ms to 0 and raises Lighthouse performance from 32 to 67. Beta status; recommended for analytics with a fallback wrapper.
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