graphql-code-generator

Maybe this isn't what the GP comment meant, but I think codegen can serve this function pretty well nowadays. I'm currently working on two separate projects, the first is a Django project with DRF and I codegen with drf-spectacular [1] and openapi-typescript-codegen [2]. The other project also uses Django, with the API through Hasura and codegen with graphql-codegen [3]. In both of these cases I've been able to largely avoid duplicating my models clientside, or at least it isn't manual. 1: https://github.com/ferdikoomen/openapi-typescript-codegen 2: https://drf-spectacular.readthedocs.io/en/latest/ 3: https://github.com/dotansimha/graphql-code-generator

While I think this is pretty cool, given his use case (wanting to use a strongly typed client and server), I can't see why one wouldn't just use GraphQL with TypeScript on both the client and server. I've done this and I love it: 1. Define the GraphQL interface with GraphQL's typedef language. GraphQL then takes care of validating all the request and responses at runtime. 2. Use something like https://github.com/dotansimha/graphql-code-generator to generate all your TypeScript types from your GraphQL schema. Place these types on your resolvers and then you get compile-time type checking. 3. Since GraphQL actually exposes your schema as part of the endpoint, clients can use the same tool to keep their TypeScript types in sync, and get the same typing benefits when writing the client code.

> Of course, the long term dream would be to generate type definitions from the SQL files, but I assume that would require a heck of a lot of magic (e.g. "actually run a query, figure out what the schema of the result table is, and create a snapshot of that"). I haven't seen a lot of prior art in terms of "static typing of DB access without a big ol' ORM," Regarding GraphQL, a combination of something like Postgraphile[0] and graphql-code-generator[1] or graphqlgen[2] gets you pretty much there without writing a single line of code. [0] https://www.graphile.org/ [1] https://github.com/dotansimha/graphql-code-generator [2] https://oss.prisma.io/graphqlgen/

An alternative to this and Apollo codegen is GraphQL Code Generator[1]. Like codegen it takes the opposite approach by generating typescript from graphql. It's similar to codegen, with the main two differences being 1) it's not centered around queries, it will generate types for all schema parts as well as queries defined client-side. This is useful for getting typescript types for all the individual schema parts without being "wrapped" in the type of a query, and 2) it's template based and relatively easy to extend modify how the code is generated. [1]: https://github.com/dotansimha/graphql-code-generator

> .. completely flew over me Thanks for the feedback. We thought that the 'BaaS' part would convey it. > .. small datamodel to a very complete GraphQL types .. Given any GraphQL server, you can generate the types/functions (using introspection) to access the GraphQL server in a typesafe/idiomatic way for a language. A project which does this: https://github.com/dotansimha/graphql-code-generator.