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Node.jsNode.jsError code

ERR_PACKAGE_MAP_KEY_NOT_FOUND

package map key not found

What does this code mean?

Code ERR_PACKAGE_MAP_KEY_NOT_FOUND · An issue reported by Node.js.

Official explanation · Original text

A package's dependencies object in the package map references a package key that is not defined in the packages object. In this example, "nonexistent" is referenced as a dependency target but not defined in packages, which will throw this error. To fix this error, ensure all package keys referenced in dependencies values are defined in the packages object.

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