text: var useHarmony = process.execArgv.filter(function(item) {
    return /^--harmony/.test(item);
  }).length;
  
  module.exports = function(disableThrowErr) {
    if (!disableThrowErr && useHarmony == 0)
      throw 'harmony required';
    else
      return useHarmony > 0;
  }
  