javascript ERROR Handler Function 템플릿

errorHandler

// 1번 방법

function errorHandler(tryFunc, errorFn) {
  try {
    tryFunc();
    return true;
  } catch (error) {
    errorFn();
    return false;
  }
}


function errorHandler(tryFunc, catchFunc, nextFunc) {
  try {
    tryFunc();
    return true;
  } catch (error) {
    Console.print(error.message);
    catchFunc(nextFunc);
    return false;
  }
}

// 2번 방법 

const inputErrorHandler = (validate, input) => {
  try {
    validate(input);
    return true;
  } catch ({ message }) {
    Console.print(message);
    return false;
  }
};

// 3번 방법

const InputErrorHandler = (validate, catchFunc, nextFunc) => {
  try {
    validate();
    return true;
  } catch ({ message }) {
    Console.print(message);
    catchFunc(nextFunc);
    return false;
  }
};

module.exports = inputErrorHandler;

 

이용 방법

// 1번 방법

function carFn(){
      const check = errorHandler(() => Validation.check(input), errorFn);
      if (check) callback(input);
    });
  }
  
    readCarName(callback) {
    Console.readLine(MESSAGE.read_car_name, (input) => {
      const check = errorHandler(() => carNameValidation.check(input), view.readCarName, callback);
      if (check) callback(input);
    });
  }
  
  // 2번 방법
  
    InputView.readChallengeCommand((command) => {
      const isValidCommand = inputErrorHandler(Validation.challengeCommand, command);

      if (!isValidCommand) {
        this.#requestChallengeCommand();
        return;
      }

      this.#processChallengeCommand(command);
    });
    
    
// 3번 방법

  readChallengeCommand(callback) {
    Console.readLine(`${GAME_MESSAGE.enforce}\n`, (command) => {
      const check = InputErrorHandler(
        () => Validation.challengeCommand(command),
        InputView.readChallengeCommand,
        callback
      );
      if (check) callback(command);
    });
  },