typescript下，mobx的store怎么写呢？

Question

方案A：

目录结构：

store
  |--Auth
       |--index.ts
       |--interface.ts
  |--Bank
       |--index.ts
       |--interface.ts

Auth/interface.ts:

import {IResponse} from '../../util/fetch';

export interface IAuthStore {
  isLogin: boolean,
  loginWithNameAndPw: (params: { username: string, password: string }) => Promise<IResponse>,
  sendMsgCode: (params: { mobile: string }) => Promise<IResponse>,
}

Auth/index.ts:

import {observable, action} from 'mobx';
import {post} from '../../util/fetch';
import {IAuthStore} from './interface'

class Auth implements IAuthStore{
  @observable
  isLogin = false;

  async loginWithNameAndPw({username, password}) {
    try {
      const response = await post(`${userServer}/authz/oauth/token`);
      return response;
    } catch (e) {
      console.log(e);
      return e;
    }
  }

  async sendMsgCode({mobile}){
    try {
      const response = await post(`${userServer}/authz/sms/send`);
      return response;
    } catch (e) {
      console.log(e);
      return e;
    }
  }

}

const authStore = new Auth();
export default authStore;

方案B：

目录结构：

store
  |--Auth
       |--index.ts
  |--Bank
       |--index.ts

Auth/index.ts:

import {observable, action} from 'mobx';
import {post} from '../../util/fetch';
import {IResponse} from '../../util/fetch';

class Auth {
  @observable
  isLogin:string = false;

  async loginWithNameAndPw({username, password}: {username: string, password: string}): Promise<IResponse> {
    try {
      const response = await post(`${userServer}/authz/oauth/token`);
      return response;
    } catch (e) {
      console.log(e);
      return e;
    }
  }

  async sendMsgCode({mobile}: {mobile: string}): Promise<IResponse> {
    try {
      const response = await post(`${userServer}/authz/sms/send`);
      return response;
    } catch (e) {
      console.log(e);
      return e;
    }
  }

}

const authStore = new Auth();
export default authStore;

请问class的成员的类型应该和class分开（方案A），还是和class写在一起（方案B），还是我这两种都没写对？

Answer 1

方案B就可以了，不建议分开

Answer 2

可以分开，我会选择方案A