const util = require('util');
const exec = util.promisify(require('child_process').exec);

async function lsExample() {
  const { stdout, stderr } = await exec('ls');
  console.log('stdout:', stdout);
  console.log('stderr:', stderr);
}
lsExample();

You can use something like this as well, using bashcommands in the node are pretty straightforward. Even better you can use something find ./ -name "*.json" to access all the json files under the current dir Tested this on ubuntu, not sure about windows and mac.