fix: replace curl-impersonate with impit - #1
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ky uses Node.js native fetch (undici) which has a distinct TLS fingerprint (JA3/JA4) that Cloudflare detects and blocks with a challenge page. impit uses a Rust-based TLS stack (patched rustls) that impersonates Chrome's TLS handshake. Uses chrome142 fingerprint which produces the same JA4 as curl_chrome145: t13d1516h2_8daaf6152771_d8a2da3f94cd
- Delete create-fetch.ts — inline Impit creation into create-client.ts - Delete npm-fetch.ts — bake base URL into context.fetch - Simplify NpmContext.fetch type — drop NpmFetch/NpmFetchResponse - All call sites: npmFetch(context, path) → context.fetch(path) - Fix leading-slash edge case in URL resolution - Smoke test uses bare Impit instance
…acks - Smoke test now goes through createClient (not bare Impit) to catch misconfiguration. Tests both GET and POST requests. - Add createClient fetch integration test for URL resolution - Add list-packages test for missing field fallback defaults - 87 tests total (was 82)
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March 23, 2026 06:48
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Replaces the
curl_chrome145external binary with impit — a Rust-based HTTP client with Chrome TLS fingerprint impersonation, distributed as a regular npm package with prebuilt binaries.curl-fetch.tsandnpm-fetch.ts— replaced by impit increate-client.tsnpmFetch(context, path)→client.fetch(path)CurlFetch/CurlRequestInit/CurlResponseLiketypesNpmContext→NpmInternalClient.npm-pkg-settings.session.txtto.npm-pkg-settings.cookies.jsoncreateClient(GET + POST verified against Cloudflare)impit,tough-cookie,tough-cookie-file-storenano-spawn