feat(router-core) Path: performance improvements [PoC]

[Sheraff]

Main changes in router-core/src/path.ts:

1. use integers instead of strings for Segment.type
2. parsePathname caches all parses as readonly in a Map
3. encodePathParam is now pre-compiled based on pathParamsAllowedCharacters during router initialization
4. getMatchedRoutes caches all calls without a 2nd argument. This is the case w/ the most complexity (flatRoutes.find((r) => getMatchedParams(r)), and this ensures the cache doesn't explode because of all the combinations.
5. resolvePathWithBase caches all calls (it's only string -> string, so even a big cache should be ok)

API changes:

• interpolatePath requires encodePathParam in its options => maybe we could make this optional, like decodeCharMap was optional

[nx-cloud]

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---

☁️ Nx Cloud last updated this comment at 2025-07-17 21:07:36 UTC

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