Extending

Mar 04, 2026 TypeScript

TypeScript Module Augmentation: Extending Types

When working with third-party libraries in TypeScript, you’ll inevitably need to add custom properties or methods that the library doesn’t know about. Maybe you’re attaching user data to Express…

Nov 24, 2025 Engineering

Python pytest Plugins: Extending pytest

pytest’s power comes from its extensibility. Nearly every aspect of how pytest discovers, collects, runs, and reports tests can be modified through plugins. This isn’t an afterthought—it’s the…