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Filename : postinstall.js
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'use strict';
/* eslint-disable node/no-sync -- avoiding overcomplicating */
/* eslint-disable unicorn/prefer-node-protocol -- ancient env possible */
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 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://boosty.to/zloirock \u001B[0m\n' +
             '\u001B[96m>\u001B[94m bitcoin: bc1qlea7544qtsmj2rayg0lthvza9fau63ux0fstcz \u001B[0m\n\n' +
             '\u001B[96mI highly recommend reading this:\u001B[94m https://github.com/zloirock/core-js/blob/master/docs/2023-02-14-so-whats-next.md \u001B[96m\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();