// model/user.ts
import {Application} from "egg";

export default (app: Application) => {
    const {STRING} = app.Sequelize
    const user = app.model.define('user', {
        account: STRING(50),
        password: STRING(50),
        userName: {
            type: STRING,
            field: 'user_name',
        },
        displayPhoto: {
            type: STRING,
            field: 'display_photo'
        },
        accessToken: {
            type: STRING,
            field: 'access_token',
        }
    })
    user.associate = function () {
        const {User, Auth, Role, UserRole} = app.model
        User.hasMany(Auth)
        User.belongsToMany(Role, {through: {model: UserRole}})
    }
    return user
}

//index.d.ts
declare interface UserModel extends BaseModel {
    account: string,
    password: string,
    userName: string,
    displayName: string,
    accessToken: string
}
declare module 'egg' {
    interface Application {
        Sequelize: SequelizeStatic
        model: Sequelize & Context["model"]
    }

    interface Context {
        model: {
            Menu: Model<MenuModel, any>
            Role: Model<RoleModel, any>
            RoleMenu: Model<RoleMenuModel, any>
            User: Model<UserModel, any>
            Auth: Model<AuthModel, any>
            UserRole: Model<UserRoleModel, any>
        }
    }
}

这样写大部分功能都是能通的，但我现在希望调用实例的get({plain:true})的方法，webstorm就会报错

//实现这样一个service方法
async getMenuTree(){
	const all_menu=await model.Menu.findAll()
	all_menu.forEach(item=>{
		item.get({plain:true})    //报错
		//发现调用model.Menu.create() model.Menu.update()得到的数据都不能调用.get()方法。		
	})	
}

上面的item和model.Menu.create()返回的类型应该是Instance吧，如何让findAll，create等返回Instance?对泛型数据云里雾里的