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node_modules/core-js/internals/define-built-in.js

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+'use strict';
+var isCallable = require('../internals/is-callable');
+var definePropertyModule = require('../internals/object-define-property');
+var makeBuiltIn = require('../internals/make-built-in');
+var defineGlobalProperty = require('../internals/define-global-property');
+
+module.exports = function (O, key, value, options) {
+  if (!options) options = {};
+  var simple = options.enumerable;
+  var name = options.name !== undefined ? options.name : key;
+  if (isCallable(value)) makeBuiltIn(value, name, options);
+  if (options.global) {
+    if (simple) O[key] = value;
+    else defineGlobalProperty(key, value);
+  } else {
+    try {
+      if (!options.unsafe) delete O[key];
+      else if (O[key]) simple = true;
+    } catch (error) { /* empty */ }
+    if (simple) O[key] = value;
+    else definePropertyModule.f(O, key, {
+      value: value,
+      enumerable: false,
+      configurable: !options.nonConfigurable,
+      writable: !options.nonWritable
+    });
+  } return O;
+};