//首页创建3个文件.txt 要同级关系
 
 //创建2个js文件 一个叫main 另一个叫index

 //index 代码如下

 const readFile = require("./main");


async function read() {
    let str1 = await readFile("1.txt");
    let str2 = await readFile("2.txt");
    let str3 = await readFile("3.txt");
    console.log(str1, str2, str3)
}

read()

//main代码 如下
const fs = require("fs");

const readFile = (pathfile, encoding = "utf8") => {
    return new Promise((resolve, reject) => {
        fs.readFile(pathfile, encoding, (err, data) => {
            if (err) {
                reject(err);
                return;
            }
            resolve(data)
        })
    })
}


module.exports = readFile