50 lines
1.8 KiB
JavaScript
50 lines
1.8 KiB
JavaScript
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/* eslint-disable max-len */
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var fs = require('fs');
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var os = require('os');
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var path = require('path');
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var env = process.env;
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var ADBLOCK = is(env.ADBLOCK);
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var CI = is(env.CI);
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var COLOR = is(env.npm_config_color);
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var DISABLE_OPENCOLLECTIVE = is(env.DISABLE_OPENCOLLECTIVE);
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var SILENT = ['silent', 'error', 'warn'].indexOf(env.npm_config_loglevel) !== -1;
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var MINUTE = 60 * 1000;
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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' +
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'\u001B[96mThe project needs your help! Please consider supporting of core-js on Open Collective or Patreon: \u001B[0m\n' +
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'\u001B[96m>\u001B[94m https://opencollective.com/core-js \u001B[0m\n' +
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'\u001B[96m>\u001B[94m https://www.patreon.com/zloirock \u001B[0m\n\n' +
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'\u001B[96mAlso, the author of core-js (\u001B[94m https://github.com/zloirock \u001B[96m) is looking for a good job -)\u001B[0m\n';
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function is(it) {
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return !!it && it !== '0' && it !== 'false';
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}
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function isBannerRequired() {
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if (ADBLOCK || CI || DISABLE_OPENCOLLECTIVE || SILENT) return false;
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var file = path.join(os.tmpdir(), 'core-js-banners');
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var banners = [];
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try {
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var DELTA = Date.now() - fs.statSync(file).mtime;
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if (DELTA >= 0 && DELTA < MINUTE * 3) {
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banners = JSON.parse(fs.readFileSync(file, 'utf8'));
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if (banners.indexOf(BANNER) !== -1) return false;
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}
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} catch (error) {
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banners = [];
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}
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try {
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banners.push(BANNER);
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fs.writeFileSync(file, JSON.stringify(banners), 'utf8');
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} catch (error) { /* empty */ }
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return true;
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}
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function showBanner() {
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// eslint-disable-next-line no-console,no-control-regex
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console.log(COLOR ? BANNER : BANNER.replace(/\u001B\[\d+m/g, ''));
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}
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if (isBannerRequired()) showBanner();
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