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hyper-express for the router benchmark

hyper-express runs on uWebSockets.js, a native addon, so ../bench.ts runs it as a process of its own (server.mjs, the same routes as every other entry) under two runtimes:

Entry Runtime
hyper-express-node Node.js (22, 24 or 26: uWebSockets.js supports no other)
hyper-express-bun Bun — does not load: uWebSockets.js is built against V8's C++ API, not Node-API, so Bun reports symbol 'napi_register_module_v1' not found and the benchmark skips the entry with that error

Setup

cd benchmarks/hyper-express
npm run setup   # clones uWebSockets.js v20.69.0 into vendor/, then npm install

hyper-express depends on uWebSockets.js through a GitHub ref. Where GitHub's tarball API is not reachable (it answers 403 through some proxies) neither bun install nor npm install can fetch that ref, but git clone can, so the clone goes to vendor/ and overrides points the dependency there. npm, not Bun: Bun ignores overrides/resolutions for a GitHub-ref dependency.

Without this install, bench.ts skips both entries and says to run it.

Caveat

Every other entry serves from the benchmark's own process, which also runs autocannon's coordinator; hyper-express has a process to itself. On a small machine that is a small advantage to it.