'use strict';

var $ = require('../internals/export');

var getBuiltIn = require('../internals/get-built-in');

var isObject = require('../internals/is-object');

var classof = require('../internals/classof');

var fails = require('../internals/fails');

var ERROR = 'Error';

var DOM_EXCEPTION = 'DOMException';

// eslint-disable-next-line es/no-object-setprototypeof, no-proto -- safe

var PROTOTYPE_SETTING_AVAILABLE = Object.setPrototypeOf || {}.__proto__;

var DOMException = getBuiltIn(DOM_EXCEPTION);

var $Error = Error;

// eslint-disable-next-line es/no-error-iserror -- safe

var $isError = $Error.isError;

var FORCED = !$isError || !PROTOTYPE_SETTING_AVAILABLE || fails(function () {

// Bun, isNativeError-based implementations, some buggy structuredClone-based implementations, etc.

// https://github.com/oven-sh/bun/issues/15821

return (DOMException && !$isError(new DOMException(DOM_EXCEPTION))) ||

// structuredClone-based implementations

// eslint-disable-next-line es/no-error-cause -- detection

!$isError(new $Error(ERROR, { cause: function () { /* empty */ } })) ||

// instanceof-based and FF Error#stack-based implementations

$isError(getBuiltIn('Object', 'create')($Error.prototype));

});

// `Error.isError` method

// https://tc39.es/ecma262/#sec-error.iserror

$({ target: 'Error', stat: true, sham: true, forced: FORCED }, {

isError: function isError(arg) {

if (!isObject(arg)) return false;

var tag = classof(arg);

return tag === ERROR || tag === DOM_EXCEPTION;

}

});