Egg: ts下无法使用egg-sequelize, 启动报错

[kongwutw]

报错信息如下：
/Users/xian2/kpl/node/egg-office/node_modules/ts-node/src/index.ts:261
return new TSError(diagnosticText, diagnosticCodes)
^
TSError: [egg-core] load file: /Users/xian2/kpl/node/egg-office/app/service/user.ts, error: ⨯ Unable to compile TypeScript:
app/service/user.ts(7,12): error TS2684: The 'this' context of type 'typeof Model' is not assignable to method's 'this' of type '(new () => Model) & typeof Model'.
Type 'typeof Model' is not assignable to type 'new () => Model'.
Cannot assign an abstract constructor type to a non-abstract constructor type.

[whxaxes]

给个能稳定复现的 repo

[kongwutw]

使用的是最新版本的依赖库：
"egg": "^2.22.2",
"egg-scripts": "^2.11.0",
"egg-sequelize": "^5.1.0",
"egg-bin": "^4.13.0",
执行npm run tsc报错如下：
app/service/user.ts:7:12 - error TS2684: The 'this' context of type 'typeof Model' is not assignable to method's 'this' of type '(new () => Model) & typeof Model'.
Type 'typeof Model' is not assignable to type 'new () => Model'.
Cannot assign an abstract constructor type to a non-abstract constructor type.

[kongwutw]

给个能稳定复现的 repo

https://github.com/yibiankeji/egg-office.git

thanks a lot

[kongwutw]

方便的话，加我微信 waxyysys28

[whxaxes]

eggjs/example 项目下有个 sequelize-ts 示例，参考那个

[ittianjiao]

我参考了，也保错

[whxaxes]

你确定你看了 demo 么，model 的定义需要这样写

export default function(app: Application) {
  const { STRING, INTEGER, DATE } = app.Sequelize;
  const User = app.model.define('user', {
      ...
  });

  return class extends User {
     // ...
  };
}

define 返回的类型是 Model 这个类，而这个在 sequelize 的声明中是 abstract class ，不允许直接用，只能继承来用。

[kongwutw]

ok, 原来如此，thanks

[Jokcy]

@whxaxes 中文文档里面任然是直接 return User的，建议更新下文档吧，不然会误导很多人