async/await to Promise

예제 1

// AS-IS
const test = async () => {}

// TO-BE
const test = () => {
  return new Promise((res, rej) => { res() })
}

예제 2

// AS-IS
const test = async () => {
  await handleTest()

  afterTest()
}

// TO-BE(1)
const test = () => {
    return new Promise(async (resolve, reject) => {
        try {
            await handleTest();
            afterTest();
            resolve();
        } catch (error) {
            reject(error);
        }
    });
}

// TO-BE(2)
const test = () => {
    return new Promise((resolve, reject) => {
        handleTest()
            .then(() => {
                afterTest();
                resolve();
            })
            .catch(reject);
    });
}

예제3

// AS-IS
const test = async () => {
  handleTest()

  await afterTest()
}

// TO-BE (1)
const test = () => {
    return new Promise(async (resolve, reject) => {
        try {
            handleTest();
            await afterTest();
            resolve();
        } catch (error) {
            reject(error);
        }
    });
}

// TO-BE (2)
const test = () => {
    return new Promise((resolve, reject) => {
        handleTest();
        
        afterTest()
            .then(resolve)
            .catch(reject);
    });
}