tinyhttp / tinyhttp / 21588683619

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perf: optimize hot path performance in request handling (#485)

* perf: optimize hot path performance in request handling

- Pre-compile regex at middleware registration time instead of lazily on first request
- Replace object spread with Object.assign for params merging to avoid allocations
- Use arrow functions instead of .bind() for fresh/stale getters
- Make stale property a lazy getter instead of eagerly evaluating
- Remove duplicate host string indexOf check

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* perf: reduce allocations in request handler hot path

- Extract HEAD handler middleware to shared module-level constant
- Inline method/exclusion filtering into #find() to avoid intermediate array
- Remove currying from handle() to avoid creating new function per middleware call

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* test: add explicit test for middleware exclusion in #find()

Adds a test verifying that middleware is only executed once even when
it would match the URL multiple times during request processing. This
exercises the exclude.includes(m) branch in the #find() method.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* test: add test for Accepts instance caching in extend.ts

Adds a test that calls multiple accepts methods (accepts, acceptsEncodings,
acceptsCharsets, acceptsLanguages) on the same request to exercise the
lazy caching branch in getAcceptsInstance().

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* chore: changeset

* test: add coverage tests for pushMiddleware and normalizeKeys

Add tests for precompiled regex usage, static routes with false keys,
and wildcard key normalization to improve router branch coverage.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: add c8 ignore for V8 coverage quirk and use random port in test

- Add c8 ignore comment for ?? operator branch that V8 coverage
  doesn't track correctly despite being tested
- Remove hardcoded po... (continued)

997 of 1019 branches covered (97.84%)

Branch coverage included in aggregate %.

42 of 44 new or added lines in 3 files covered. (95.45%)

1323 of 1328 relevant lines covered (99.62%)

262.83 hits per line