fix(types): align FetchError.errno with NodeJS ErrnoException#1875

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nthbotast wants to merge 1 commit intonode-fetch:mainfrom

nthbotast:fix-fetcherror-errno-type-1831

nthbotast commented Mar 6, 2026 •

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Summary

update FetchError.errno type from string to NodeJS.ErrnoException['errno']
keep type behavior aligned with Node's ErrnoException contract
adjust the existing type test snippet to accept both number and string errno values

Closes #1831

Validation

git diff --cached --check
⚠️ npm run test-types currently fails in this ephemeral environment due to @types/node/http2.d.ts parser/type errors (toolchain mismatch), unrelated to this patch


          fix(types): align FetchError.errno with NodeJS ErrnoException

e9bd0e4

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