@vitest/coverage-c8

What is @vitest/coverage-c8?

@vitest/coverage-c8 is an npm package that integrates with Vitest to provide code coverage reporting using the c8 library. It helps developers measure how much of their code is being tested, ensuring that their tests cover the necessary parts of their application.

What are @vitest/coverage-c8's main functionalities?

Basic Coverage Reporting

This configuration enables basic coverage reporting using c8. It specifies the coverage provider as 'c8' and sets up multiple reporters to output coverage data in text, JSON, and HTML formats.

module.exports = {
  coverage: {
    provider: 'c8',
    reporter: ['text', 'json', 'html'],
  },
};

Custom Coverage Directory

This configuration allows you to specify a custom directory for storing coverage reports. By setting the 'reportsDirectory' option, you can control where the coverage data is saved.

module.exports = {
  coverage: {
    provider: 'c8',
    reporter: ['text', 'json', 'html'],
    reportsDirectory: './custom-coverage',
  },
};

Excluding Files from Coverage

This configuration demonstrates how to exclude certain files or directories from coverage reporting. The 'exclude' option takes an array of glob patterns to specify which files should be ignored.

module.exports = {
  coverage: {
    provider: 'c8',
    reporter: ['text', 'json', 'html'],
    exclude: ['**/node_modules/**', '**/test/**'],
  },
};

Other packages similar to @vitest/coverage-c8

nyc

nyc is a popular code coverage tool for JavaScript that works with various testing frameworks. It provides detailed coverage reports and supports multiple reporters. Compared to @vitest/coverage-c8, nyc is more widely used and has broader support for different testing environments.

jest

Jest is a comprehensive testing framework that includes built-in support for code coverage. It provides an easy-to-use interface for running tests and generating coverage reports. While Jest is a full-fledged testing solution, @vitest/coverage-c8 focuses specifically on integrating coverage reporting with Vitest.

c8

c8 is a standalone code coverage tool that uses V8's built-in coverage feature. It is the underlying library used by @vitest/coverage-c8 for generating coverage reports. Using c8 directly provides more flexibility and control over coverage reporting, but it requires additional setup compared to the integrated solution provided by @vitest/coverage-c8.

README

The README file is missing