What's Changed

• workflow: add scorecard.yml by @RafaelGSS in https://github.com/nodejs/undici/pull/1942
• ci: timeout CI jobs after 15 minutes by @dominykas in https://github.com/nodejs/undici/pull/1946
• test(wpt): respect variants by @panva in https://github.com/nodejs/undici/pull/1951
• fix: improve isFormDataLike compat by @ronag in https://github.com/nodejs/undici/pull/1953
• fix: flaky fetch tests by @KhafraDev in https://github.com/nodejs/undici/pull/1956
• test(wpt): include all testing files by @KhafraDev in https://github.com/nodejs/undici/pull/1954
• fix: remove unneeded fetch tests by @KhafraDev in https://github.com/nodejs/undici/pull/1960
• fix: use normal timers for delays < 1s by @ronag in https://github.com/nodejs/undici/pull/1961
• perf: optimize happy path by @anonrig in https://github.com/nodejs/undici/pull/1955
• fix: 🐛 add URL upstream variations in BalancedPool types by @jimmy-guzman in https://github.com/nodejs/undici/pull/1966
• test(wpt): handle uncaught exceptions by @KhafraDev in https://github.com/nodejs/undici/pull/1965
• Fix failing wpts by @KhafraDev in https://github.com/nodejs/undici/pull/1967
• test(wpt): add results to an existing WPT Report by @panva in https://github.com/nodejs/undici/pull/1944
• fix: strengthen isStream condition checking by @debadree25 in https://github.com/nodejs/undici/pull/1969
• fix: implement basic policy container by @KhafraDev in https://github.com/nodejs/undici/pull/1970
• TypeScript type fixes, for #1949 by @joshxyzhimself in https://github.com/nodejs/undici/pull/1968
• websocket: separate connection logic from websocket by @KhafraDev in https://github.com/nodejs/undici/pull/1973
• README: h3 not showing ### as a header by @hilleer in https://github.com/nodejs/undici/pull/1975
• wptrunner: expose gc by @KhafraDev in https://github.com/nodejs/undici/pull/1974
• perf: cork socket before writing by @ronag in https://github.com/nodejs/undici/pull/1982
• fix: fast timers and event loop lag by @ronag in https://github.com/nodejs/undici/pull/1977
• fix: correctly calculate resource timing duration by @amilajack in https://github.com/nodejs/undici/pull/1988
• wpt: update tests by @KhafraDev in https://github.com/nodejs/undici/pull/1984
• fix: undici stream throwOnError by @dancastillo in https://github.com/nodejs/undici/pull/1995
• fix: remove unnecessary WeakRef by @ronag in https://github.com/nodejs/undici/pull/2000
• Fix: websocket.d.ts - error TS2304: Cannot find name 'MessagePort' by @ZaBlazzingZephyrus in https://github.com/nodejs/undici/pull/1997
• feat: add abort signal to body.dump() by @debadree25 in https://github.com/nodejs/undici/pull/1993
• fix(fetch): third party abortcontrollers throwing errors by @KhafraDev in https://github.com/nodejs/undici/pull/2002
• Improve ProxyAgent example with autentication by @egmen in https://github.com/nodejs/undici/pull/2004
• Add clientFactory option to ProxyAgent by @andrewfecenko in https://github.com/nodejs/undici/pull/2003

New Contributors

• @jimmy-guzman made their first contribution in https://github.com/nodejs/undici/pull/1966
• @hilleer made their first contribution in https://github.com/nodejs/undici/pull/1975
• @amilajack made their first contribution in https://github.com/nodejs/undici/pull/1988
• @ZaBlazzingZephyrus made their first contribution in https://github.com/nodejs/undici/pull/1997
• @egmen made their first contribution in https://github.com/nodejs/undici/pull/2004
• @andrewfecenko made their first contribution in https://github.com/nodejs/undici/pull/2003

Full Changelog: https://github.com/nodejs/undici/compare/v5.20.0...v5.21.0