strictTags 4.1.0+

• Type: boolean
• Default: true
• CLI: --strict-tags, --no-strict-tags

Should Vitest throw an error if test has a tag that is not defined in the config to avoid silently doing something surprising due to mistyped names (applying the wrong configuration or skipping the test due to a --tags-filter flag).

Note that Vitest will always throw an error if --tags-filter flag defines a tag not present in the config.

For example, this test will throw an error because the tag fortnend has a typo (it should be frontend):

form.test.js

test('renders a form', { tags: ['fortnend'] }, () => {
  // ...
})

vitest.config.js

import { defineConfig } from 'vitest/config'

export default defineConfig({
  test: {
    tags: [
      { name: 'frontend' },
    ],
  },
})