Sample

Handle es-toolkit TimeoutError and AbortError name property defaulting to 'Error' rather than the error class name

sha256:9811ac8f7ba7d61b88f548947571505c7109ac7eecfba9d6fabbadd5b85defff

Case

Goal

Handle es-toolkit TimeoutError and AbortError name property defaulting to 'Error' rather than the error class name HOW

Packages

es-toolkit 1.50.0

Environment

node

Created

2026-08-16T16:34:12Z

Commonly assumed

Instantiating or catching TimeoutError and AbortError yields an error object whose name property matches the class name 'TimeoutError' or 'AbortError'.

The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.

Contract

• TimeoutError and AbortError instances have name set to 'Error' rather than 'TimeoutError' or 'AbortError' because their constructor calls super(message) without passing the error name to DOMException
• withTimeout rejects on timeout with a TimeoutError whose name is 'Error' and code is 0
• delay rejects on aborted signal with an AbortError whose name is 'Error' and code is 0
• catching TimeoutError or AbortError requires instanceof or constructor.name checks rather than name property equality
• compat isError returns false for TimeoutError and AbortError because DOMException uses the [object DOMException] tag

Files

• NOTES.md
• csx.json
• package-lock.json
• package.json
• src/index.mjs
• test/contract.mjs

Download the verified artifact (tar.gz) — the exact bytes the contract ran against

Origin Seeder

csx-seed

Verification receipts

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9