text: import { argv } from 'yargs';
  import chalk from 'chalk';
  
  import getCss from './utils/getCss';
  import timer from './utils/timer';
  import output from './utils/output';
  
  import postcss from 'postcss';
  import postcssSafeParser from 'postcss-safe-parser';
  import postcssNested from 'postcss-nested';
  
  const size = argv.size || 10;
  const css = getCss(size);
  
  console.log('');
  console.log(
    `Start ${chalk.green('postcssNestedSafeParser')} measuring with ${chalk.cyan(size)} class length`
  );
  console.log('');
  
  timer(() => {
    return postcss([postcssNested])
      .process(css, {
        parser: postcssSafeParser,
      })
      .then(result => {});
  }).then(time => {
    output('postcssNestedSafeParser', size, time);
  });
  