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  codex/hoist-hot-regex
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perf(router-core): hoist regex literals evaluated per built location A regex literal creates a new RegExp object every time it is evaluated (measured: 56 B per evaluation, 0 once hoisted). decodePath and encodePathLikeUrl run on every buildLocation, cleanPath on every href of a basepath router, encodeParam on every splat and trimPathRight on every trailing-slash path; parseLocation's fast-path test runs per navigation. Their literals are now module constants. trimPathLeft (construction only) and the cold branches of getUrlScheme are left as they were. Allocation per buildLocation (sampling heap profiler over 160k builds against the production dist, Node 24.8; on top of the previous commit): relative destination 1309 -> 1197 B (-112) search updater 1085 -> 969 B (-116) static destination 955 -> 786 B (-169) CPU (tests/build-location.bench.ts, two rounds, hz): within noise, directionally +1-2%: search updater 41.6k/44.2k -> 43.5k/43.2k, relative 29.8k/30.2k -> 29.6k/30.3k, masked 20.5k/20.9k -> 20.8k/20.6k. Bundle: react-router.minimal +18 gzip (derived from the composed measurements 86077 with, 86059 without these hoists). Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> (cherry picked from commit 72b093cad28641112858bfbc9140175eb2c1a3da)

nx affected --targets=test:eslint,test:unit,test:e2e,test:types,test:build,build --parallel=3

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4fc006a88425

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10 of 793 tasks used cache.

92%

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12m 51s instead of 2h 47m 51s.

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310 groups of tasks optimized.

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routerWorkspace