copy-to-deploy-folder.js

const fs = require('fs');
const path = require('path');
const os = require('os');
const fse = require('fs-extra');

let filesToCopy = ['package.json', 'yarn.lock'];
let foldersToCopy = ['dist'];

function copyFile(src, dest) {
    let readStream = fs.createReadStream(src);

    readStream.once('error', err => {
        console.log(err);
    });

    readStream.once('end', () => {
        console.log('done copying');
    });

    readStream.pipe(fs.createWriteStream(dest));
}

let pathFolder;
if (os.platform() == 'win32') {
    // Windows
    pathFolder = __dirname.split('\\');
} else {
    // Linux / MacOS
    pathFolder = __dirname.split('/');
}

let folderLength = pathFolder.length;
let currentFolder = pathFolder[folderLength - parseInt(1)];

filesToCopy.forEach(file => {
    let src = path.join(__dirname, file);
    let destDir = path.join('..', currentFolder + '-deploy');
    fs.access(destDir, err => {
        if (err) console.log('error', err);

        copyFile(src, path.join(destDir, file));
    });
});

foldersToCopy.forEach(folder => {
    let src = path.join(__dirname, folder);
    let destDir = path.join('..', currentFolder + '-deploy', folder);
    fse.removeSync(destDir);
    fse.copy(src, destDir, err => {
        if (err) console.log(err);
        console.log(`successfully moved ${folder}`);
    });
});