js fs copy file code example

Example 1: node filesystem change directory of a file

const {promisify} = require('util');
const fs = require('fs');
const {join} = require('path');
const mv = promisify(fs.rename);

const moveThem = async () => {
  // Move file ./bar/foo.js to ./baz/qux.js
  const original = join(__dirname, 'bar/foo.js');
  const target = join(__dirname, 'baz/qux.js'); 
  await mv(original, target);
}

moveThem();

Example 2: copy text from file to another file in javascript with fs

'use strict';

import fs from 'fs';

let fileContent = 'Anything what you want';
let message = fs.writeFileSync('message.txt', fileContent);

function copyContent(fileName: string, dest: string): boolean {
  try {
    fs.copyFileSync(fileName, dest);
    console.log(dest);
    return true;
  } catch (err) {
    return false;
  }
}

console.log(copyContent('message.txt', 'destination.txt'));