feat: support coverage.reporters option

[9aoy]

Summary

support coverage.reporters option & update default value to ['text', 'html', 'clover', 'json']

import { defineConfig } from '@rstest/core';

export default defineConfig({
  coverage: {
    enabled: true,
    provider: 'istanbul',
    reporters: [['text', { skipFull: true }]],
  },
});

Related Links

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Copilot]

Pull Request Overview

This PR adds support for the coverage.reporters option to the rstest configuration, allowing users to customize coverage reporting output. The change updates the default reporters to include text, html, clover, and json formats and enables passing reporter-specific options.

• Added coverage.reporters configuration option with support for reporter-specific options
• Updated coverage provider to use configurable reporters instead of hardcoded ones
• Enhanced test coverage to verify both default and custom reporter configurations

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/coverage-istanbul/src/provider.ts	Updated to accept and use configurable reporters with options support
packages/core/src/types/coverage.ts	Added type definitions for reporters configuration and normalized options
packages/core/src/index.ts	Exported new NormalizedCoverageOptions type
packages/core/src/core/runTests.ts	Added logging for coverage provider information
packages/core/src/config.ts	Added default reporters configuration and normalization logic
packages/core/package.json	Added istanbul-reports type definitions dependency
e2e/test-coverage/index.test.ts	Enhanced tests to verify reporter functionality and custom options
e2e/test-coverage/fixtures/test/string.test.ts	Reduced test coverage to create uncovered code for testing
e2e/test-coverage/fixtures/rstest.skipFull.config.ts	Added test configuration for custom reporter options

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (1)

packages/core/src/types/coverage.ts:1

• The CoverageProvider constructor signature is inconsistent with the actual implementation which expects NormalizedCoverageOptions. Update the type to match the implementation: constructor(options: NormalizedCoverageOptions);

import type { ReportOptions } from 'istanbul-reports';

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