web-feature: Error.isError()

The Error.isError() static method checks whether a value is an Error object.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-08

Servo

Android

2026-08

ArkWeb

HarmonyOS

*

Chrome Browser

Android

134

Safari Browser

iOS

*