ui <CRoot />

• Type: boolean
• Default: false
• CLI: --ui, --ui=false

Enable Vitest UI.

::: warning This features requires a @vitest/ui package to be installed. If you do not have it already, Vitest will install it when you run the test command for the first time. :::

::: danger SECURITY ADVICE Make sure that your UI server is not exposed to the network. Since Vitest 4.1 setting api.host to anything other than localhost will disable the buttons to save the code or run any tests for security reasons, effectively making UI a readonly reporter. :::