Pattern Matching Custom Data Types in Typescript

Our application data comes in all shapes and sizes. We choose the best data structures for our problem, but when we need to put a variety of our data through the same pipeline, we have to manage safely distinguishing our data types and handling all their possible variations. In this post, I want to share a pattern I’ve discovered for working with different data types in a homogenous way. You can think of it as a functional programming version of the adapter pattern.…