Script to recursive change file line endings (from CLRF to LR)

convert_line_endings.js

const commander = require('commander');
const colors = require('colors');
const replace = require('replace-in-file');
const fs = require('fs');
const util = require('util');
 
let path = null;

commander
  .version('0.1.0')
  .arguments('<filename>')
  .action(f => path = f)
  // TODO: Implement new conversions
  //.option('-f, --from [type]', 'Input line ending', 'clrf')
  //.option('-t, --to [type]', 'Output line ending', 'lf')  
  .parse(process.argv);

if (process.argv.length <= 2) {
    commander.outputHelp();
    return;
}

const is_dir = (path) => fs.lstatSync(path).isDirectory();
const exit = (message, {color='red',code=1}={}) => {
    console.error(colors[color](message));
    process.exit(code);
}

if (!path) exit('No input file! Exit.');
if (!fs.existsSync(path)) exit(`Path "${path}" is not exists!`);
if (is_dir(path) && !path.endsWith('/**')) path += '/**';

const config = {
    files: path,
    from: /\r\n/g,
    to: '\n',
    countMatches: true
};

const results = replace.sync(config);
const changed = results.filter(x => x.hasChanged);

results.forEach(result => {
    const line = util.format(
        'File: %s (%s/%s)',
        colors.green(result.file),
        colors.yellow(result.numReplacements),
        colors.yellow(result.numMatches)
    );
    console.log(line);
});

console.log();
console.log(util.format('Files changed/total: %s/%s', colors.yellow(changed.length), colors.yellow(results.length)));