What is property testing and how to approach it in JS?

The article by J.R. Sinclair explores property-based testing in JavaScript, particularly using the fast-check library. Property-based testing revolves around defining properties that we expect functions or modules to fulfill, followed by generating test cases based on these properties. Sinclair details how to install the fast-check library and begins with basic examples for newcomers. He discusses continuing the tests with more complex data and how to utilize the 'property' function to define expectations effectively. Moreover, the author explains how to convert traditional unit tests into property-based tests, which can greatly enhance test coverage and uncover potential bugs more efficiently. This approach to testing is incredibly beneficial for developers looking to ensure their code functions correctly across various scenarios while delivering a greater number of validated functionalities with minimal effort, even for intricate systems.