Chai Assertion Library

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library 6.2.2 ·javascript
verified May 27, 2026

Chai is a widely used BDD/TDD assertion library for both Node.js and browser environments, designed to be framework-agnostic and pair delightedly with any JavaScript testing framework. The current stable version is 6.2.2, with frequent patch and minor releases, alongside periodic major updates, demonstrating an active development cadence.

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