Message name collides with imported message name

[timostamm]

I'll give a simple example where we were forced to change message names, in order to avoid import clashes.

package valueobjects;

// Message representing postal address value object
message PostalAddress {
  string street = 1;
  string city = 2;
  ...
}

package resources;

import "valueobjects.proto";

// Message representing postal address entity
message PostalAddress {
  string id= 1;
  valueobjects.PostalAddress postal_address = 2;
  ...
}

when complied we get

import { PostalAddress } from "../../../../valueobjects_pb.js";

/**
 * Postal address message.
 *
 * @generated from message resources.v1.PostalAddress
 */
export const PostalAddress = proto3.makeMessageType(
  "resources.v1.PostalAddress",
  () => [
    { no: 1, name: "id", kind: "scalar", T: 9 /* ScalarType.STRING */ },
    { no: 2, name: "postal_address", kind: "message", T: PostalAddress },
  ],
);

which fails with error

Identifier 'PostalAddress' has already been declared

The above messages compile just fine in go .

Originally posted by @SpareShade in #455 (comment)