create database shema

test.interface.ts

interface Test {
  code:string; 
}

export default Test;

test.model.ts

import * as mongoose from 'mongoose';
import Test from './test.interface';
const schema = new mongoose.Schema({
    code: Number,
}, {
    timestamps: true,
});

const testModel = mongoose.model<Test & mongoose.Document>('Test', schema);

export default testModel;