Incorrect arguments passed error when arg1 is a metadata type?

[ardok]

Hi all,

So, just wondering. I'm facing this issue of Incorrect arguments passed error in my app.

Tracked it down to this part of the code:

      if (
        !(
          arg1 instanceof Metadata &&
          arg2 instanceof Object &&
          arg3 instanceof Function
        )
      ) {
        throw new Error('Incorrect arguments passed');
      }

I tried printing all the args:

            console.log(arg1 instanceof metadata_1.Metadata);
            console.log(arg2 instanceof Object);
            console.log(arg3 instanceof Function);
            if (!(arg1 instanceof metadata_1.Metadata &&
                arg2 instanceof Object &&
                arg3 instanceof Function)) {
                console.log(arg1);
                console.log(arg2);
                console.log(arg3);
                throw new Error('Incorrect arguments passed');
            }

And arg1 is a Metadata:

false
true
true
Metadata {
  internalRepr: Map {
    'rpc-caller' => [ 'my-web-app' ],
    'rpc-encoding' => [ 'proto' ],
    'rpc-service' => [ 'my-go-service' ]
  },
  options: {}
}
{
  serviceName: 'abacus-go',
  timeout: 10000,
  headers: undefined,
  deadline: 1619628947832
}
[Function: handleResponse]

Version:

"@grpc/grpc-js@^1.1.7":
  version "1.2.2"

Is this somehow enough to give me suggestions on what could be wrong? Or not at all?

[ardok]

Figured it out. It was just a classic dependency hell. Some packages use different versions of grpc-js.

[robtayl0r]

You mind posting more info on what the solution/problem was? "Classic dependency hell" is a bit vacant.

[murgatroid99]

I would guess that they had a Metadata object from one version of grpc-js and they were passing it to a method from a different version of grpc-js. This breaks the instanceof Metadata check because the Metadata classes from the two version of the library are separate objects.