[Types] properties like "caster" are not typed (SingleNestedPath)

Do you want to request a feature or report a bug? types

What is the current behavior? the options are un-typed

If the current behavior is a bug, please provide the steps to reproduce.

// NodeJS: 16.4.1
// MongoDB: 4.2-bionic (Docker)
import * as mongoose from "mongoose"; // mongoose@5.13.2

const schema1 = new mongoose.Schema({ nestedPath1: { prop1: String } });
const schema2 = new mongoose.Schema({ nestedSchema: schema1 });
// @ts-ignore
console.log("schema1.nestPath1", schema1.path("nestedPath1"));
// @ts-ignore
console.log("schema2.nestedSchema", schema2.path("nestedSchema").caster);

// tslint-disable no-unused
schema2.eachPath((path, type) => {
  console.log("path,type", path, type);
  if (type instanceof mongoose.Schema.Types.Embedded) {
    // currently an error everywhere from typescript "property does not exist"
    type.caster;
    type.emit;
    type.on;
    type.path;
    type.base;
  }
});

What is the expected behavior? the properties to be typed

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that “latest” is not a version. mongoose: 5.13.2

---

options to do:

• mongoose.Schema.Types.Embedded should extends EventEmitter
• path should be typed
• base should be typed
• when possible '$isSingleNested' should also be typed

[vkarpov15]

schema.path() returns the subdocument schematype, e.g. instanceof mongoose.Schema.Types.Embedded.

And yes, the subdocument schematype does have those properties, but they’re not meant to be user-facing. If there’s a reason for them to be user facing I’m happy to add them to the TS bindings.

[hasezoey]

that might be true, so what is schema.path() and schema.eachPath(the second parameter from the callback) supposed to be

and just to clarify, with subdocument-schematype you mean Schema.Types.* and with actual-subdocuments you mean Types.*? when yes, them i am mixing things up maybe, but if not, look at the reproduction code i provided, it clearly logs the output from schema.eachPath (both parameters) and it contained those values / functions on the output