Error: Unknown object type "promise"

[omar-dulaimi]

Bug report

• I have checked other issues to make sure this is not a duplicate.

Describe the bug

File uploads don't work and produce the error above.

To Reproduce

Steps to reproduce the behavior, please provide code snippets or a repository:

I use typegraphql with graphql-upload. Basically, I send an array of files like this in a mutation:

[
  {
     file: File
  }
]

then the error occurs.

Expected behavior

File uploads should succeed as they used to.

Actual behaviour

Error: Unknown object type "promise"

Additional context

    const schemaWithPermissions = applyMiddleware(schema, permissions);
    const server = new ApolloServer({
        schema: schemaWithPermissions,
        debug: true,
        uploads: false,
    });

Deleting this line
const schemaWithPermissions = applyMiddleware(schema, permissions);
and using
schema
without
applyMiddleware
uploads would work fine. But how should I enable permissions then?

NOTE:

I have commented out any mutations that do file uploads from Shield, until this issue gets fixed.

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[chrissisura]

We have the same error unfortunately when using graphql upload with the ShieldCache turned on strict, as it goes through all the args. Has there been found any solution yet?

[BenDLH]

I hit this same issue, but figured out the fix for it. The issue is caused by object-hash (used in the default hash implementation) not being able to handle promises.

Install object-hash in your project, then update your shieldOptions (passed into the shield function) to include the following:

const shieldOptions = {
    hashFunction: (arg: {
        parent: any;
        args: any;
    }): string => {
        try {
            return objectHash(arg)
        } catch (error) {
            if (error.message === "Unknown object type \"promise\"") {
                // ObjectHash can't handle promises so return a unique string as the hash instead
                return ulid()
            } else {
                throw error
            }
        }
    }
}

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.