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node_modules/core-js/modules/es.regexp.flags.js

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+'use strict';
+var global = require('../internals/global');
+var DESCRIPTORS = require('../internals/descriptors');
+var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
+var regExpFlags = require('../internals/regexp-flags');
+var fails = require('../internals/fails');
+
+// babel-minify and Closure Compiler transpiles RegExp('.', 'd') -> /./d and it causes SyntaxError
+var RegExp = global.RegExp;
+var RegExpPrototype = RegExp.prototype;
+
+var FORCED = DESCRIPTORS && fails(function () {
+  var INDICES_SUPPORT = true;
+  try {
+    RegExp('.', 'd');
+  } catch (error) {
+    INDICES_SUPPORT = false;
+  }
+
+  var O = {};
+  // modern V8 bug
+  var calls = '';
+  var expected = INDICES_SUPPORT ? 'dgimsy' : 'gimsy';
+
+  var addGetter = function (key, chr) {
+    // eslint-disable-next-line es/no-object-defineproperty -- safe
+    Object.defineProperty(O, key, { get: function () {
+      calls += chr;
+      return true;
+    } });
+  };
+
+  var pairs = {
+    dotAll: 's',
+    global: 'g',
+    ignoreCase: 'i',
+    multiline: 'm',
+    sticky: 'y'
+  };
+
+  if (INDICES_SUPPORT) pairs.hasIndices = 'd';
+
+  for (var key in pairs) addGetter(key, pairs[key]);
+
+  // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+  var result = Object.getOwnPropertyDescriptor(RegExpPrototype, 'flags').get.call(O);
+
+  return result !== expected || calls !== expected;
+});
+
+// `RegExp.prototype.flags` getter
+// https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
+if (FORCED) defineBuiltInAccessor(RegExpPrototype, 'flags', {
+  configurable: true,
+  get: regExpFlags
+});