Description

Fixes an issue where reporter options defined in the config file were being ignored when the reporter was specified via CLI flags.

Problem

When users configured a reporter in their vitest.config.ts with specific options:

export default defineConfig({
  test: {
    reporters: [
      ['junit', {
        suiteName: 'My Custom Suite',
        addFileAttribute: true,
      }],
    ],
  },
})

And then ran vitest with the CLI reporter flag (e.g., to run only JUnit in CI):

vitest --reporter junit

The reporter options (suiteName, addFileAttribute, etc.) from the config were completely ignored, and the reporter would use default options instead.

Solution

Modified the reporter resolution logic in resolveConfig.ts to preserve options from the config file when CLI reporters are specified. The fix:

1. Builds a map of reporter names to their options from the resolved config
2. When CLI reporters override the config, looks up each reporter in this map
3. Uses the config options if available, otherwise falls back to empty options

This ensures that users can:

• Define reporter options once in their config file
• Selectively enable reporters via CLI flags for CI/CD pipelines
• Have those reporters respect the configured options

Example

With this fix, running:

vitest --reporter junit

Will now correctly use the suiteName, addFileAttribute, and other options defined in the config file, producing the expected XML output with custom suite names and file attributes.

Testing

• Added new test case verifying CLI reporters preserve config options
• All existing reporter tests pass (junit, json, default, reporters.spec)
• Type checking and linting pass
• CodeQL security scan passes with 0 vulnerabilities

Closes #7535

• Fixes vitest --reporter junit does not pick up the options defined in the config file #8774

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