Mongoose ts simple saving

server.ts

import { Schema, connect, Document, model } from "mongoose";

let connectionString = "mongodb://your/connection/string"

connect(connectionString);

interface ITodo {
    text?: string;
}

interface ITodoDoc extends Document, ITodo { }

let todoSchema = new Schema({
    text: {
        type: String
    }
});

let Todo = model<ITodoDoc>("Todo", todoSchema);

// If "new<TI>(doc?: TI): T;" exists in @types/mongoose/index.d.ts
new Todo<ITodo>({
    text: "Do something crazy"
}).save().then(data => {
    console.log(`saved data ${JSON.stringify(data, undefined, 2)}`);
}, e => {
    for (let key in e.errors) {
        console.log(e.errors[key].message);
    }
});