Typescript mongoose

user.ts

import * as mongoose from 'mongoose';

import Schema = mongoose.Schema;
import Document = mongoose.Document;

var UserSchema = new Schema({
  name: String,
  password: String,
  email: String,
  head: String
});
// IUser只是单纯用来约束类型的，并没有什么作用
export interface IUser extends Document {
  name: string;
  password: string;
  email: string;
  head: string;
}

export var User = mongoose.model<IUser>("users", UserSchema);