// bad
Promise.reject('error reason');

// good
Promise.reject(new Error('error reason'))

// bad
new Promise(async (resolve, reject) => {})

// good
new Promise((resolve, reject) => { async function(){coding....}()})

// bad
for(const apiPath of paths) {
   const { data } = await request(apiPath)
}

// good
const results = []
for(const apiPath of paths) {
   const res = resquest(apiPath)
   results.push(res)
}
await Promise.all(results)

// bad
new Promise((resolve, reject) => {
    if(isOK) return 'ok'
    return 'not ok'
})
// good
new Promise((resolve, reject) => {
    if(isOK) resolve('ok')
    reject(new Error('not ok'))
})

// bad
p1((err, res1) => {
    p2(res1, (err, res2) => {
        p3(res2, (err, res3) => {
            p4(res3, (err, res4) => {
                console.log(res4)
            })
        })
    })
})

// good
const res1 = await p1()
const res2 = await p1(res1)
const res3 = await p1(res2)
const res4 = await p1(res3)
console.log(res4)

// bad
asyncPromise().then(() => {})

// good
asyncPromise().then(() => {}).catch(() => {})

// bad
const result = await asyncPromise()

// good
try {
    const result = await asyncPrmise()
} catch() {
    // do something
}

// bad
function getUserInfo() {
    return userInfo
}
await getUserInfo()

// good
async function getUserInfo() {
    return userInfo
}
await getUserInfo()

async function getUserInfo() {
    return userInfo
}

// bad
if(getUserInfo()) {}

// good
if(await getUserInfo()) {}

// better
const { userInfo } = await getUserInfo()
if(userInfo) {}