Error [ERR_MODULE_NOT_FOUND]: Cannot find module '.../node_modules/prettier/index.mjs' #18884

ilg-ul · 2026-02-21T20:45:30Z

ilg-ul
Feb 21, 2026

I'm using prettier for quite some time, and recently I noticed VS Code notifying me in a separate console about some errors:

["ERROR" - 22:41:51] Failed to resolve config file for /Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/.vscode/launch.json
["ERROR" - 22:41:51] Cannot find module '/Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.mjs' imported from /Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.cjs
Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.mjs' imported from /Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.cjs
    at finalizeResolution (node:internal/modules/esm/resolve:278:11)
    at moduleResolve (node:internal/modules/esm/resolve:871:10)
    at defaultResolve (node:internal/modules/esm/resolve:995:11)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at resolve (data:text/javascript;base64,CglleHBvcnQgYXN5bmMgZnVuY3Rpb24gcmVzb2x2ZShzcGVjaWZpZXIsIGNvbnRleHQsIG5leHRSZXNvbHZlKSB7CgkJaWYgKHNwZWNpZmllciA9PT0gJ2ZzJykgewoJCQlyZXR1cm4gewoJCQkJZm9ybWF0OiAnYnVpbHRpbicsCgkJCQlzaG9ydENpcmN1aXQ6IHRydWUsCgkJCQl1cmw6ICdub2RlOm9yaWdpbmFsLWZzJwoJCQl9OwoJCX0KCgkJLy8gRGVmZXIgdG8gdGhlIG5leHQgaG9vayBpbiB0aGUgY2hhaW4sIHdoaWNoIHdvdWxkIGJlIHRoZQoJCS8vIE5vZGUuanMgZGVmYXVsdCByZXNvbHZlIGlmIHRoaXMgaXMgdGhlIGxhc3QgdXNlci1zcGVjaWZpZWQgbG9hZGVyLgoJCXJldHVybiBuZXh0UmVzb2x2ZShzcGVjaWZpZXIsIGNvbnRleHQpOwoJfQ==:13:10)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at resolve (data:text/javascript;base64,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:22:11)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at Hooks.resolve (node:internal/modules/esm/hooks:240:30)
    at handleMessage (node:internal/modules/esm/worker:199:24)
["ERROR" - 22:41:51] Error handling text editor change
["ERROR" - 22:41:51] Cannot find module '/Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.mjs' imported from /Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.cjs
Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.mjs' imported from /Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/node_modules/prettier/index.cjs
    at finalizeResolution (node:internal/modules/esm/resolve:278:11)
    at moduleResolve (node:internal/modules/esm/resolve:871:10)
    at defaultResolve (node:internal/modules/esm/resolve:995:11)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at resolve (data:text/javascript;base64,CglleHBvcnQgYXN5bmMgZnVuY3Rpb24gcmVzb2x2ZShzcGVjaWZpZXIsIGNvbnRleHQsIG5leHRSZXNvbHZlKSB7CgkJaWYgKHNwZWNpZmllciA9PT0gJ2ZzJykgewoJCQlyZXR1cm4gewoJCQkJZm9ybWF0OiAnYnVpbHRpbicsCgkJCQlzaG9ydENpcmN1aXQ6IHRydWUsCgkJCQl1cmw6ICdub2RlOm9yaWdpbmFsLWZzJwoJCQl9OwoJCX0KCgkJLy8gRGVmZXIgdG8gdGhlIG5leHQgaG9vayBpbiB0aGUgY2hhaW4sIHdoaWNoIHdvdWxkIGJlIHRoZQoJCS8vIE5vZGUuanMgZGVmYXVsdCByZXNvbHZlIGlmIHRoaXMgaXMgdGhlIGxhc3QgdXNlci1zcGVjaWZpZWQgbG9hZGVyLgoJCXJldHVybiBuZXh0UmVzb2x2ZShzcGVjaWZpZXIsIGNvbnRleHQpOwoJfQ==:13:10)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at resolve (data:text/javascript;base64,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:22:11)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at Hooks.resolve (node:internal/modules/esm/hooks:240:30)
    at handleMessage (node:internal/modules/esm/worker:199:24)

This happens when i select the file in the File Explorer.

When I invoke the command prettier, it performs normally.

Am I doing something stupid?

Anyone else seeing this weird behaviour in VS Code?

ilg-ul · 2026-02-21T23:42:01Z

ilg-ul
Feb 21, 2026
Author

After a discussion with Copilot, he concluded that it must be something wrong with my VS Code, did some magic, asked me to reload the VS Code window, and the issue no longer occurs.

The console now shows messages like:

"INFO" - 01:35:52] EditorConfig support is enabled, checking for .editorconfig files
["INFO" - 01:35:52] Using custom config path from settings: /Users/ilg/MyProjects/xpack.github/packages/xpm-lib-ts.git/config/.prettierrc.json
["INFO" - 01:35:52] Resolved config:
{
  "printWidth": 80,
  "semi": false,
  "singleQuote": true,
  "trailingComma": "es5"
}
["INFO" - 01:35:52] No Prettier config file found, but settings were loaded from .editorconfig

I have no idea what was wrong, but as long as it works, we'll leave it like this.

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Feb 21, 2026

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Feb 21, 2026
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