Javascript copyDir

            const fs = require("fs");
        const path = require("path");
        const { Console } = require("console");
        const copyDir = (source, target) => {
            fs.mkdirSync(target);
            fs.readdirSync(source).forEach((pathfile) => {
                const midSource = path.join(source, pathfile)
                const midTarget = path.join(target, pathfile)
                if (fs.statSync(midSource).isFile()) {
                    if (path.extname(midSource) === ".css") {
                        let file = fs.readFileSync(midSource, "utf-8");
                        let result = file.replace(/background/g, "color")
                        fs.writeFileSync(midTarget, result)
                    } else {
                        fs.copyFileSync(midSource, midTarget)
                    }
                } else {
                    copyDir(midSource, midTarget)
                }
            })

        }

        const dirtoJSON = (dir) => {
            return fs.statSync(dir).isFile() ? {
                name: path.basename(dir),
                path: path.resolve(dir),
                type: path.extname(dir).slice(1),
            } : {
                name: path.basename(dir),
                path: path.resolve(dir),
                type: "文件夹",
                children: fs.readdirSync(dir).map(item => dirtoJSON(path.join(dir, item))),
            }
        }

         copyDir("day8", "XXX")
        const o = dirtoJSON("XXX")

        fs.writeFileSync("data.json",JSON.stringify(o))

redDir

        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.js中
        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