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node_modules/core-js/modules/esnext.regexp.escape.js

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+'use strict';
+var $ = require('../internals/export');
+var uncurryThis = require('../internals/function-uncurry-this');
+var toString = require('../internals/to-string');
+var WHITESPACES = require('../internals/whitespaces');
+
+var charCodeAt = uncurryThis(''.charCodeAt);
+var replace = uncurryThis(''.replace);
+var NEED_ESCAPING = RegExp('[!"#$%&\'()*+,\\-./:;<=>?@[\\\\\\]^`{|}~' + WHITESPACES + ']', 'g');
+
+// `RegExp.escape` method
+// https://github.com/tc39/proposal-regex-escaping
+$({ target: 'RegExp', stat: true, forced: true }, {
+  escape: function escape(S) {
+    var str = toString(S);
+    var firstCode = charCodeAt(str, 0);
+    // escape first DecimalDigit
+    return (firstCode > 47 && firstCode < 58 ? '\\x3' : '') + replace(str, NEED_ESCAPING, '\\$&');
+  }
+});