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ERR_ASYNC_TYPE

async type

What does this code mean?

Code ERR_ASYNC_TYPE · An issue reported by Node.js.

Official explanation · Original text

The type of an asynchronous resource was invalid. Users are also able to define their own types if using the public embedder API.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Errors | Node.js v26.13.1 Documentation ↗

Creator: Node.js contributors; Joyent, Inc. and other Node contributors
License: MIT License (Node.js documentation)
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

Source details · Original licenses and notices