graphql-upload

Middleware and a GraphQL Upload scalar for handling file uploads via multipart requests in Node.js GraphQL servers (Express, Koa, Apollo). Version 17.0.0 is ESM-only, requires Node.js ^18.18.0 || ^20.9.0 || >=22.0.0, and graphql ^16.3.0. Key differentiators: implements the GraphQL multipart request spec, supports deduplication of files across variables, streams files to cloud storage or filesystem, and provides both middleware functions and a low-level processRequest function for custom integrations. Released actively with breaking changes in major versions.