Types for AppSync lambda resolver don't match

[ScottSWu]

Hi, I'm using AppSync + GraphQL + Lambda Resolvers through Amplify (v8.3.0). I'm using TypeScript to write my lambda resolver, but the type of event seems slightly different from the definition for AppSyncResolverEvent in @types/aws-lambda.

The actual event object looks like:

{
    "typeName": "Mutation",
    "fieldName": "createInitialMedia",
    "arguments": {
        "projectId": "07a46207-19fb-439c-91a8-490e09dc86f7"
    },
    "identity": {
        ...
     },
    "source": null,
    "request": {
        ...
    },
    "prev": {
        "result": {}
    }
}

Is AppSyncResolverEvent the wrong type to be using here? Or is this event object format specific to Amplify?

schema.graphl for reference:

type Mutation {
  createInitialMedia(projectId: String!): Media
    @function(name: "mediaApi-${env}")
}

[samturner3]

See https://github.com/DefinitelyTyped/DefinitelyTyped/blob/d9e49940a01fb1e8c0cf9f3bc6e69e5da16eb087/types/aws-lambda/trigger/appsync-resolver.d.ts#L47

and

https://stackoverflow.com/questions/73974440/how-to-type-the-event-of-a-serverless-resolver-sent-from-an-amplify-graphql-call/77234398#77234398