TypeGraphQL comes to address these issues, based on experience from a few years of developing GraphQL APIs in TypeScript. The main idea is to have only one source of truth by defining the schema using classes and a bit of decorator help.

We use the @Authorized() decorator to restrict access to authorized users only or the users that fulfil the roles requirements. The detailed rules for when and why we declare returns => Recipe functions and others are described in resolvers docs.

Note that if a field of an object ... and just implement the field resolver (described in resolvers doc). Be aware that defining constructors is strictly forbidden and we shouldn't use them there, as TypeGraphQL creates instances of object type classes under the hood by ...

TypeGraphQL comes to address these issues, based on experience from a few years of developing GraphQL APIs in TypeScript. The main idea is to have only one source of truth by defining the schema using classes and some help from decorators. Additional features like dependency injection, validation and auth guards help with common tasks that normally we would have to handle ourselves. The documentation, installation guide, and detailed description of the API and all of its features are available on the website.

Define your whole schema, including types, interfaces, enums, unions and subscriptions · Create the schema, types and resolvers only with TypeScript, using classes and decorators

On the GitHub repository there are a few simple examples of how to use different TypeGraphQL features and how well they integrate with 3rd party libraries · To run an example, simply go to the subdirectory (e.g. cd ./simple-usage), and then start the server (npx ts-node ./index.ts)

TypeGraphQL comes to address these issues, based on experience from a few years of developing GraphQL APIs in TypeScript. The main idea is to have only one source of truth by defining the schema using classes and some help from decorators. Additional features like dependency injection, validation and auth guards help with common tasks that normally we would have to handle ourselves. The documentation, installation guide, and detailed description of the API and all of its features are available on the website.

**TypeGraphQL** is basically an abstraction layer built on top of the reference GraphQL implementation for Javascript - [`graphql-js`](https://github.com/graphql/graphql-js). It not only allows for building a GraphQL schema using classes and decorators but also gives a set of tools that focus ...

July 26, 2024 - Next, we define the resolver class which will handle the fetching of user data. We’ll use the @Resolver decorator from TypeGraphQL to bind our class to the specified GraphQL type, which in this case is User:

The main idea of TypeGraphQL is to create GraphQL types based on TypeScript classes.

TypeGraphQL provides a second way to generate the GraphQL schema - the buildTypeDefsAndResolvers function.

Besides [declaring GraphQL's object types](/docs/types-and-fields.html), TypeGraphQL allows us to easily create queries, mutations and field resolvers - like normal class methods, similar to REST controllers in frameworks like Java `Spring`, .NET `Web API` or TypeScript [`routing-controlle...

First, we have to install the main package, as well as graphql-js and graphql-scalars which are peer dependencies of TypeGraphQL:

TypeGraphQL provides aliases for 3 basic scalars: · This shorthand allows you to save keystrokes when declaring field types:

A single GraphQL query can potentially generate a huge workload for a server, like thousands of database operations which can be used to cause DDoS attacks. In order to limit and keep track of what each GraphQL operation can do, `TypeGraphQL` provides the option of integrating with Query Complexity ...

TypeGraphQL classes with the following decorators can be annotated with @Extensions decorator:

That's why TypeGraphQL has built-in support for argument and input validation. By default, we can use the class-validator library and easily declare the requirements for incoming data (e.g.

August 20, 2020 - Such small overhead is much easier ... in the docs 📖. This is another feature that is not visible from the first sight but gives new possibilities like splitting the schema to public and private ones 👀 · In 0.17.x and before, the schema was built from all the metadata collected by evaluating the TypeGraphQL ...

import { mergeSchemas } from "@graphql-tools/schema"; import { renameDirective } from "fake-rename-directive-package"; // Build TypeGraphQL executable schema const schemaSimple = await buildSchema({ resolvers: [SampleResolver], }); // Merge schema with sample directive type definitions const schemaMerged = mergeSchemas({ schemas: [schemaSimple], // Register the directives definitions typeDefs: [renameDirective.typeDefs], }); // Transform and obtain the final schema const schema = renameDirective.transformer(schemaMerged);

This error occurs mostly when there are more than one version of the graphql-js module in the project. In most cases it means that one of our dependencies has a dependency on a different version of graphql-js, e.g. we, or TypeGraphQL use v14.0.2 but apollo-server-express depends on v0.13.2.