12-async-patterns-promises.js

const {readFile,writeFile}=require('fs').promises
// const util=require('util')
// const readFilePromise=util.promisify(readFile)
// const writeFilePromise=util.promisify(writeFile)


const start=async()=>{
    try{
        const first=await readFile('./content/first.txt','utf8')
        const second=await readFile('./content/second.txt','utf8')
        await writeFile(
            './content/result-of-someshit.txt',
            `boi ${first} ${second}`,{flag:'a'})
        console.log(first,second)
    }
    catch(error){
        console.log(error)
    }

}
start()

//  const getText=(path)=>{
//     return new Promise((resolve,reject)=>{
//         readFile(path,'utf8',(err,data)=>{
//             if(err){
//                 reject(err)
//             }else{
//                 resolve(data)
//             }
//         })
//     })
// }

// getText('./content/first.txt')
//     .then(result=>console.log(result))
//     .catch((err)=>console.log(err))