text: var fs = require('fs');
  var os = require('os');
  var path = require('path');
  var env = process.env;
  
  var ADBLOCK = is(env.ADBLOCK);
  var COLOR = is(env.npm_config_color);
  var DISABLE_OPENCOLLECTIVE = is(env.DISABLE_OPENCOLLECTIVE);
  var SILENT = ['silent', 'error', 'warn'].indexOf(env.npm_config_loglevel) !== -1;
  var OPEN_SOURCE_CONTRIBUTOR = is(env.OPEN_SOURCE_CONTRIBUTOR);
  var MINUTE = 60 * 1000;
  
  // you could add a PR with an env variable for your CI detection
  var CI = [
    'BUILD_NUMBER',
    'CI',
    'CONTINUOUS_INTEGRATION',
    'DRONE',
    'RUN_ID'
  ].some(function (it) { return is(env[it]); });
  
  var BANNER = '\u001B[96mThank you for using core-js (\u001B[94m https://github.com/zloirock/core-js \u001B[96m) for polyfilling JavaScript standard library!\u001B[0m\n\n' +
               '\u001B[96mThe project needs your help! Please consider supporting of core-js:\u001B[0m\n' +
               '\u001B[96m>\u001B[94m https://opencollective.com/core-js \u001B[0m\n' +
               '\u001B[96m>\u001B[94m https://patreon.com/zloirock \u001B[0m\n' +
               '\u001B[96m>\u001B[94m https://paypal.me/zloirock \u001B[0m\n' +
               '\u001B[96m>\u001B[94m bitcoin: bc1qlea7544qtsmj2rayg0lthvza9fau63ux0fstcz \u001B[0m\n\n' +
               '\u001B[96mAlso, the author of core-js (\u001B[94m https://github.com/zloirock \u001B[96m) is looking for a good job -)\u001B[0m\n';
  
  function is(it) {
    return !!it && it !== '0' && it !== 'false';
  }
  
  function isBannerRequired() {
    if (ADBLOCK || CI || DISABLE_OPENCOLLECTIVE || SILENT || OPEN_SOURCE_CONTRIBUTOR) return false;
    var file = path.join(os.tmpdir(), 'core-js-banners');
    var banners = [];
    try {
      var DELTA = Date.now() - fs.statSync(file).mtime;
      if (DELTA >= 0 && DELTA < MINUTE * 3) {
        banners = JSON.parse(fs.readFileSync(file));
        if (banners.indexOf(BANNER) !== -1) return false;
      }
    } catch (error) {
      banners = [];
    }
    try {
      banners.push(BANNER);
      fs.writeFileSync(file, JSON.stringify(banners), 'utf8');
    } catch (error) { /* empty */ }
    return true;
  }
  
  function showBanner() {
    // eslint-disable-next-line no-console, regexp/no-control-character -- output
    console.log(COLOR ? BANNER : BANNER.replace(/\u001B\[\d+m/g, ''));
  }
  
  if (isBannerRequired()) showBanner();
  