schema mongo in typescript

schema_test.ts

import {
  Schema, model, Document,
} from "mongoose";
import { IAsset } from "@type/asset.type";

interface AssetDocument extends IAsset, Document {
  transform(): string
}

const schema = new Schema<AssetDocument>({
  name: { type: String, required: true },
  collection_slug: { type: String, required: true },
  token_id: { type: String, required: true },
  description: String,
}, { versionKey: false, timestamps: true });

schema.method({
  transform(): string {
    console.log("====>this: ", this);
    const a = this.name;
    return a;
  },
});

const AssetModel = model<AssetDocument>("Asset", schema);

export default AssetModel;