Hey everyone! I’m working on a project where I’m using Flask and Peewee on the backend (Python) and Svelte with TypeScript on the frontend. I’m really struggling to figure out how to keep my types in sync between the two.
I’ve run into a few issues where I change something on the backend, but forget to update the frontend types. This has led to some frustrating bugs. Does anyone have any tips or tricks for keeping everything consistent?
I’ve heard about things like code generation, but I’m not sure how to set that up or if it’s the right solution for my stack. Any advice would be super helpful! Thanks in advance!
One effective approach for ensuring type consistency is to establish a single source of truth for your data schema. By defining your data structures in a neutral format such as JSON Schema or Protocol Buffers, you can generate both TypeScript types for your frontend and Python classes for your backend automatically.
This strategy not only minimizes human error but also streamlines updates, as any change in the schema triggers regeneration of types across your stack. Although tools like quicktype and frameworks like GraphQL might add initial complexity, they ultimately enhance reliability in your development workflow.
have u tried using OpenAPI (Swagger)? it’s pretty cool for this. u can define ur API schema once & generate both TS types & Python classes from it. saves a ton of time & keeps things in sync. might be worth checkin out for ur project
oooh, that’s a tricky one! have u thought about using shared interfaces? maybe create a common folder with JSON files defining ur data structures? then u could import those in both ur Python and TS code. it’s not perfect, but might help keep things more aligned. what do u think? any other ideas you’ve tried?