OpenJS World

Many TypeScript developers are familiar with what are considered "advanced patterns", but it can be difficult to find applicable use cases for these patterns. Ethan's talk will take the audience on a problem solving journey using TypeScript definition patterns including generics, function overloading, discriminant unions, declaration merging, and more. The talk covers real problems he solved when authoring Fastify's (a fast and low overhead Node.js web server framework) v3 type definitions. If you are working with TypeScript directly or writing type definitions for a JavaScript project, you should attend this talk!