Generate GraphQL Resolver Signatures Online

Generate GraphQL Resolver Signatures

Resolver functions connect GraphQL fields to your backend logic. Starting from typed signatures saves time and keeps resolver implementations aligned with the schema. This tool generates resolver signature stubs in TypeScript, Flow, or Java directly from GraphQL SDL.

What this tool does

Provide your GraphQL schema and choose an output language. For TypeScript, also paste operation documents so query and mutation resolvers are included. The tool emits resolver type maps and method signatures you can implement in your server codebase.

Related tools

For Java model classes instead of resolver stubs, use the GraphQL to Java Converter. For client-side component generation, try the GraphQL to Components Generator.

Frequently Asked Questions

Why does TypeScript require GraphQL documents?

TypeScript resolver signatures include operation-level resolver types. Queries and mutations from your documents define which root resolvers appear in the generated output.

Do Flow and Java modes need documents?

No. Flow and Java resolver signature generation uses the schema only. The document field is shown only when TypeScript output is selected.

Can I switch between output languages?

Yes. Change the output language dropdown and the generated signatures update automatically using the same schema input.

Does this generate resolver implementations?

The tool generates type-safe signatures and stubs, not business logic. You still implement each resolver method with your data fetching and validation code.

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GraphQL To Resolvers Signature