KUBB_LINT_FAILED: Lint failed

Code: KUBB_LINT_FAILED Level: error

The linter pass over the generated files failed. Linting runs after generation. The files are written, but the run is marked failed.

What happened ​

When output.lint is set, Kubb runs the configured linter (oxlint, biome, or eslint) over the output directory. A non-zero exit from the linter shows up here, in the summary, and in --reporter json. Earlier versions swallowed it.

How to fix it ​

• Confirm the linter is installed and its config is valid.
• Run it manually on the output to see the underlying error, for example oxlint ./src/gen.
• Relax the rules for generated files, or remove output.lint if you do not want a linter pass.

Common causes ​

• The linter is not installed in the project.
• The linter config is invalid or points at a missing file.
• Lint rules flag the generated code as errors.

Example output ​

[KUBB_LINT_FAILED]: linter failed: Cannot find module 'oxlint' fix: Check that the tool is installed and that the command and its config are correct. see: https://kubb.dev/docs/5.x/reference/diagnostics/kubb-lint-failed

See also ​

• Configuration
• KUBB_FORMAT_FAILED
• Diagnostics reference