const fse = require('fs-extra'); const path = require('path'); const copyOptions = { overwrite: true, recursive: true }; const promises = []; promises.push( fse.copy( path.join(__dirname, '../packages/usb/blhost'), path.join(__dirname, '../tmp/packages/blhost'), copyOptions) ); promises.push( fse.copy( path.join(__dirname, '../rules'), path.join(__dirname, '../tmp/rules'), copyOptions) ); Promise .all(promises) .catch(console.error);