@graphql-tools/schema

makeExecutableSchema

This feature allows you to combine type definitions and resolvers to create an executable GraphQL schema.

const { makeExecutableSchema } = require('@graphql-tools/schema');
const typeDefs = `
  type Query {
    hello: String
  }
`;
const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
};
const schema = makeExecutableSchema({
  typeDefs,
  resolvers,
});

addResolversToSchema

This feature enables you to add new resolvers to an existing GraphQL schema.

const { addResolversToSchema } = require('@graphql-tools/schema');
const schema = makeExecutableSchema({ typeDefs });
const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
};
addResolversToSchema({ schema, resolvers });

addSchemaLevelResolver

This feature allows you to add a resolver function that runs before any other resolvers for each operation.

const { addSchemaLevelResolver } = require('@graphql-tools/schema');
const schema = makeExecutableSchema({ typeDefs, resolvers });
const rootResolver = (root, args, context, info) => { /*...*/ };
addSchemaLevelResolver(schema, rootResolver);