I'm working with a Flask and Peewee backend in Python and a Svelte frontend using TypeScript. I'm curious about the best strategies for ensuring type safety between the two. What methods or tools do you recommend to maintain a reliable connection and type consistency?
4 Answers
We set up a monorepo with a Node.js backend and a Vue frontend. There's a library called zodios which works well; it helps build out types that can be shared between the backend and frontend. It has a bit of a learning curve, but once you get a grip on it, it's fantastic!
If you're looking for something specific, consider using a library like TRPC. It's designed to bridge type safety between TypeScript backends and frontends seamlessly. It’s a great tool for ensuring that both ends communicate correctly without mismatched types.
I've been using GraphQL for a couple of years, and it has improved the developer experience significantly. It helps manage changes in the backend while keeping the frontend in check. I also utilize GraphQL Codegen as part of the CI/CD process, which gives me precise types during development and type checks during deployment.
One effective approach is to generate an OpenAPI specification from your Flask backend. You can then use this spec to create corresponding TypeScript types for your Svelte frontend. This way, both sides will be in sync regarding the expected data structures.
If your monorepo contains both parts, consider just sharing the same classes instead of complicating things further.