Node.js script to populate an index.js file with all files in a directory and export as an object using ES6 export syntax.

Populate_Index_ES6.js

const fs = require('fs');

const Populate_Index_ES6 = () => {
  const path = __dirname + '/src/dir';
  // Read directory
  fs.readdir(path + '/components', (err, items) => {
    let output = '';
    // Add import statements for each file
    for (let i=0; i<items.length; i++) {
      let file = items[i].substring(0, items[i].length-3);
      output = output + `import ${file} from './components/${file}'\n`;
    }
    output = output + '\n';
    output = output + 'export default {\n';
    // Add files to export object
    for (let i=0; i<items.length; i++) {
      let file = items[i].substring(0, items[i].length-3);
      output = output + `  ${file},\n`;
    }
    output = output + '}';
    // Write to index.js
    fs.writeFile(path + '/index.js', output, err => {
      if (err) throw err;
      console.log('\nGenerated index.js file in ' + path); // eslint-disable-line
    });
  });
};

module.exports = Populate_Index_ES6;