Defer directive can only be used on fragments

[jasonkuhrt]

Get this error currently when using the defer directive:

ContextualAggregateError: One or more errors in the execution result.
    at handleOutput (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/layers/6_client/handleOutput.ts:53:19)
    at run (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/layers/6_client/client.ts:236:12)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async executeDocument (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/layers/6_client/client.ts:157:12)
    at async <anonymous> (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/examples/55_generated/directive.ts:10:18) {
  context: {},
  cause: undefined,
  errors: [
    GraphQLError: Directive "@defer" may not be used on FIELD.
        at <anonymous> (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/lib/graphqlHTTP.ts:32:47)
        at Array.map (<anonymous>)
        at parseExecutionResult (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/lib/graphqlHTTP.ts:31:28)
        at Object.unpack (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/layers/5_core/core.ts:195:26)
        at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
        at async runHook (/Users/jasonkuhrt/projects/jasonkuhrt/graffle/src/lib/anyware/runHook.ts:279:16) {
      path: undefined,
      locations: undefined,
      extensions: [Object: null prototype] {}
    }
  ]
}

Issue is that we allow it on fields, but actually that's not how it's used. See https://the-guild.dev/graphql/yoga-server/docs/features/defer-stream#using-defer