inject-to-graphql-context.js

 graphqlExpress(req => {
      const extendContext = require('./graphql').getGraphQLExtendedContext(req)
      // }
      return ({
        schema,
        tracing,
        context: {
          ...req,
          ...extendContext
        },
        formatError: ({ originalError, message, stack }) => {
          if (originalError && !(originalError instanceof GenericError)) {
            console.error('GraphQL track:', originalError)
          }
          return {
            message: message,
            code: originalError ? originalError.code : null,
            stack: dev ? stack.split('\n') : null
          }
        }
      })
    })