Author: Freelancer Dev

In functional programming, the Lenses pattern offers a solution for handling data manipulation in an immutable way. A Lens essentially serves as a first-class reference to a subpart of some data type. Despite its regular use in languages with built-in support for lenses (e.g. Haskell), a JavaScript developer can still incorporate the lens pattern via libraries or custom implementations. This blog post will explore the lenses pattern and demonstrate how you can implement it in JavaScript to work with deeply nested paths. What is a Lens? A Lens is a functional pattern used to manage immutable data operations. They let us “zoom…