▲ 7 ▼ Custom JSON unmarshaler for a GraphQL client

In this post, I will tell a story of how I had to build a custom JSON unmarshaler for the needs of a GraphQL client library in Go. I'll start with the history of how everything started, build motivation for why a custom JSON marshaler was truly needed, and then describe how it was implemented. This is going to be a long journey, so strap yourself in, and here we go!