import fs from 'fs/promises' const writer = async (file: string) => { try { const currentFile = await fs.readFile(file) const currentFileString = String(currentFile) await fs.writeFile(file, '#!/usr/bin/env node\n', { flag: 'w' }) await fs.appendFile(file, currentFileString) } catch (e) { console.log(e) } } writer('./dist/index.js')