Simple mocking lib with JS proxy

📰 Medium · Programming

Learn to create a simple mocking library using JavaScript Proxy objects for efficient testing and development

intermediate Published 22 May 2026
Action Steps
  1. Create a Proxy object to intercept and manipulate property access
  2. Use the Proxy handler to define custom behavior for get, set, and delete operations
  3. Apply the mocking library to a sample object to test its functionality
  4. Configure the mock to return specific values or throw errors for testing purposes
  5. Test the mocked object to verify its behavior
Who Needs to Know This

Developers and QA engineers can benefit from this technique to improve their testing workflows and reduce debugging time

Key Insight

💡 JavaScript Proxy objects can be used to create a simple and effective mocking library for testing and development

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🚀 Create a simple mocking lib with JS Proxy to streamline your testing workflow! 💻

Key Takeaways

Learn to create a simple mocking library using JavaScript Proxy objects for efficient testing and development

Full Article

One of the coolest features in JS is a Proxy object. Pity I can’t find more uses for them in a day-to-day development. Or maybe that’s a… Continue reading on Medium »
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