Type-graphql: Question: How to generate a schema.graphql file using type-graphql

[ajmath]

I'm currently working on setting up a graphql server using AWS AppSync and lambda. Part of the requirement is to have a schema.graphql written to disk at deploy time. Is this possible with type-graphql? I know there isn't any CLI tool available for this library but could this be done with the GraphQLSchema object returned from buildSchema? Thanks

[MichalLytek]

graphql-js has a printSchema helper:
http://graphql.org/graphql-js/utilities/#printschema

[omatrot]

@ajmath Are you in the gitter lobby ? I'ld like to discuss this topic with you because I'm doing the same

[ajmath]

I ended up going a different route and generating basic typescript types
from a graphql schema using
https://github.com/dotansimha/graphql-code-generator

On Fri, May 18, 2018 at 8:54 AM Olivier MATROT [e-mail]
wrote:

@ajmath https://github.com/ajmath Are you in the gutter lobby ? I'ld
like to discuss this topic with you because I'm doing the same

—
You are receiving this because you were mentioned.

Reply to this email directly, view it on GitHub
https://github.com/19majkel94/type-graphql/issues/81#issuecomment-390197851,
or mute the thread
https://github.com/notifications/unsubscribe-auth/AAQRt_oTZPQWnYxVOIhrYRNCCOuAzw2Kks5tzsSWgaJpZM4T-e5_
.

[MichalLytek]

I've used this approach (schema in SDL, generating TS interfaces, writing resolvers using graphql-tools) in my earlier GraphQL projects and keeping things in sync was a real pain, as I described in article:
https://medium.com/@19majkel94/graphql-typescript-typegraphql-ba0225cb4bed
That's why TypeGraphQL has been created, to have one source of truth - only classes in the code.

If you need the SDL schema file for deployment purposes, you can create a simple npm script for that and you can run this even as a git commit hook.

// createSchema.ts
export function createSchema() {
  return buildSchema({
    // ...
  }
}

// generate.ts
(async () => {
  const schema = await createSchema();
  const sdl = printSchema(schema);
  await fs.writeFile(__dirname + '/schema.graphql', sdl);
})();

{
  "scripts": {
    "generate-schema": "ts-node ./generate.ts"
  }
}

[MichalLytek]

FYI, done in #170 🎉