Generate GraphQL resolvers easily with GraphQL Centaur CLI

GraphQL Centaur is a CLI tool with a goal to provide seamless experience creating GraphQL as a service.

GraphQL Centaur generates Mongo/Stucco-js database resolvers in TypeScript from any give GraphQL Schema.

Generate fully-functional basic resolvers with Centaur CLI, customize them the way that suits your project and enjoy your GraphQL based backend.

Installation

If you want to install GraphQL Centaur globally run:

npm i -g graphql-centaur

to install it inside your backend repo performer:

npm i graphql-centaur

then use with npx or as a package.json script.

Resolver generation

First time when you generate a resolver centaur will also generate needed libraries for collections, DB, Utils and graphql-zeus definitions, then given the following schema:

type Person{
    firstName: String!
}
type Query{
    people: [Person]!
}
schema{
    query: Query
}

after choosing the following elements:

• Query
• people
• CRUD
• listFilter

GraphQL Centaur should generate TypeScript resolver placed in $src/Query/people.ts directory:

import { FieldResolveInput, FieldResolveOutput } from "stucco-js";
import { PersonCollection } from "../db/collections";
import { DB } from "../db/mongo";
import { Utils } from "../Utils";
import { Person, ResolverType, ValueTypes } from "../graphql-zeus";

export const handler = async (): Promise<FieldResolveOutput> => {
    const db = await DB();
    const col = await db.collection(PersonCollection);
    return Utils.CursorToGraphQLArray<Person>(
        await col.find({}),
    );
};

and append correct entries to the stucco.json file:

{
    "resolvers":{
        "Query.people":{
            "resolve":{
                "name":"lib/Query/people"
            }
        }
    }
}

After running Stucco-js, your resolver should work out of the box. Of course, some resolver types, however, might need a little bit of custom code to make them work the way you want, but basically you have just generated your GraphQL Backend!

Available Resolvers

Resolvers are split into the following categories:

GraphQL Centaur is also compatible with GraphQL Editor projects.