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node_modules/core-js/modules/es.error.to-string.js

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+'use strict';
+var defineBuiltIn = require('../internals/define-built-in');
+var errorToString = require('../internals/error-to-string');
+
+var ErrorPrototype = Error.prototype;
+
+// `Error.prototype.toString` method fix
+// https://tc39.es/ecma262/#sec-error.prototype.tostring
+if (ErrorPrototype.toString !== errorToString) {
+  defineBuiltIn(ErrorPrototype, 'toString', errorToString);
+}