Rename brand colors from SCSS variables to custom color function

rename-color.js

const { writeFileSync, readFileSync, readdirSync, statSync } = require('fs');
const { join } = require('path');

function isExt(filepath, ext) {
  return filepath.endsWith(ext);
}

function walkDir(dir, ext, callback) {
  readdirSync(dir).forEach( f => {
    let dirPath = join(dir, f);
    let isDirectory = statSync(dirPath).isDirectory();
    isDirectory ?
      walkDir(dirPath, ext, callback) :
      isExt(join(dir, f), ext) ?
      callback(join(dir, f)) : '';
  });
};

const colors =
  {
    'primary-blue':      'color(primary-blue)',
    'very-dark-grey':    'color(very-dark-grey)',
    'light-base':        'color(light-base)',
    'black':             'color(black)',
    'bg-grey':           'color(bg-grey)',

    'main-yellow':       'color(main-yellow)',
    'light-blue':        'color(light-blue)',
    'standard-grey':     'color(standard-grey)',
    'light-grey':        'color(light-grey)',
    'lighter-grey':      'color(lighter-grey)',
    'error-red':         'color(error-red)',
    'green':             'color(green)',
    'warning-orange':    'color(warning-orange)',
    'medium-blue':       'color(medium-blue)',

    'error-red-bg':      'color(error-red-bg)',
    'success-green':     'color(success-green)',
    'success-green-bg':  'color(success-green-bg)',
    'warning-orange-bg': 'color(warning-orange-bg)',
    'info-blue-bg':      'color(info-blue-bg)',
  }

walkDir('libs', 'scss', (filepath) => {
  try {
    let data = readFileSync(filepath, 'utf8');
    console.log(`Replacing vars in ${filepath}`)
    for (let c in colors) {
      data = data.replace(new RegExp('\\$' + c + '\;', 'gm'), colors[c]+';')
    }
    writeFileSync(filepath, data, 'utf8');
  } catch (e) {
    console.log(e);
  }
})