syntax-error - 在rootSaga在watchSec上在rootSaga上未捕获

Question

user.js获取用户

 import { FETCTH_FAIL, FETCTH_SUCCES, FETCTH_USER } from "../action/actionTypes";
    import { put, takeLatest } from "redux-saga/effects";
    import Api from "./App";
    
    function* fetUsers() {
      try {
        const users = yield Api.getUsers();
        yield put({ type: FETCTH_SUCCES, users: users });
      } catch (err) {
        yield put({ type: FETCTH_FAIL, error });
      }
    }
    
    export function* watchFecthUsers() {
      yield takeLatest(FETCTH_USER, fetUsers);
    }

rootSaga.js rootSaga

import { call, all } from "redux-saga/effects";
import { watchFecthUsers } from "./users";

export default function* rootSaga() {
  yield call(watchFecthUsers);
}

actionTypes.js Action

export const FETCTH_USER = 'fetchuser';
export const FETCTH_SUCCES = 'fetchsucces';
export const FETCTH_FAIL = 'fetchfail';

我收到下面提到的错误

D:\android_ios\sagaredux\node_modules\react-native\Libraries\Core\ExceptionsManager.js:71 uncaught at rootSaga at rootSaga

at watchFecthUsers

at takeLatest

at fetUsers

ReferenceError: error is not defined

Answer 1

我知道现在回答已经很晚了，但只是为了清楚起见，这个错误
yield put({type:FETCTH_FAIL，error});
在上面的行中，未定义“错误”，因此会发生错误。
您可以将此行更改为如下所示:
yield put({type:FETCTH_FAIL，error:err}); ，其中“err”是catch块的变量名。