Jest

Delightful JavaScript testing framework

⭐ 4.6/5 (10000 reviews)

About Jest

Jest is the most popular JavaScript testing framework with zero-config setup, snapshot testing, and built-in code coverage.

Key Features

  • Zero config
  • Snapshot testing
  • Code coverage
  • Mocking
  • Parallel execution
  • Watch mode

✅ Pros

  • Easy to start
  • Great snapshots
  • Built-in coverage
  • Fast

❌ Cons

  • Slow for large suites
  • ESM support lagging
  • Heavy dependency
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