core-js/internals/shared.js

Standard library

var global = require('../internals/global');
var setGlobal = require('../internals/set-global');
var SHARED = '__core-js_shared__';
var store = global[SHARED] || setGlobal(SHARED, {});

(module.exports = function (key, value) {
  return store[key] || (store[key] = value !== undefined ? value : {});
})('versions', []).push({
  version: '3.0.0-beta.13',
  mode: require('../internals/is-pure') ? 'pure' : 'global',
  copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
});