KUBB_POST_GENERATE_FAILED: Post-generate command failed#

Code: KUBB_POST_GENERATE_FAILED
Level: error

A post-generate command (output.postGenerate) exited with a non-zero status. These commands run after generation. The files are written, but the run is marked failed.

What happened#

output.postGenerate runs shell commands once the generated files are formatted and linted, for example a formatter or a tsc check. A command that exits non-zero shows up here, in the summary, and in --reporter json. Earlier versions only logged a line and moved on.

Common causes#

• The command is not installed or not on PATH.
• The command has a typo.
• The command did real work and genuinely failed, such as a type error caught by tsc.

How to fix it#

• Run the command manually from the project root to see its output.
• Confirm the binary is installed and the command is spelled correctly.

import { defineConfig } from 'kubb/config'

export default defineConfig({
  input: { path: './petStore.yaml' },
  output: {
    path: './src/gen',
    postGenerate: ['biome check --write ./src/gen'],
  },
})

Example output#

[KUBB_POST_GENERATE_FAILED]: Post-generate command failed: Command failed with exit code 1
  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-post-generate-failed

See also#

• Configuration
• Diagnostics reference