first

node_modules/core-js/internals/error-to-string.js

@@ -0,0 +1,30 @@
+'use strict';
+var DESCRIPTORS = require('../internals/descriptors');
+var fails = require('../internals/fails');
+var anObject = require('../internals/an-object');
+var create = require('../internals/object-create');
+var normalizeStringArgument = require('../internals/normalize-string-argument');
+
+var nativeErrorToString = Error.prototype.toString;
+
+var INCORRECT_TO_STRING = fails(function () {
+  if (DESCRIPTORS) {
+    // Chrome 32- incorrectly call accessor
+    // eslint-disable-next-line es/no-object-defineproperty -- safe
+    var object = create(Object.defineProperty({}, 'name', { get: function () {
+      return this === object;
+    } }));
+    if (nativeErrorToString.call(object) !== 'true') return true;
+  }
+  // FF10- does not properly handle non-strings
+  return nativeErrorToString.call({ message: 1, name: 2 }) !== '2: 1'
+    // IE8 does not properly handle defaults
+    || nativeErrorToString.call({}) !== 'Error';
+});
+
+module.exports = INCORRECT_TO_STRING ? function toString() {
+  var O = anObject(this);
+  var name = normalizeStringArgument(O.name, 'Error');
+  var message = normalizeStringArgument(O.message);
+  return !name ? message : !message ? name : name + ': ' + message;
+} : nativeErrorToString;