![]() Third-party assets might get blocked due to the limitations of cross-origin isolation policies. Safari does not fully support the required mode for cross-origin isolation, so you might encounter limitations when running a server in a preview frame within the StackBlitz editor. We have beta support for Safari on macOS, starting with Safari 16.4. However, you can work around this by opening your server preview in a separate window.īecause Firefox and Node.js use different JavaScript engines (SpiderMonkey and V8, respectively), there is a small risk of running into JS engine differences. Please try it and share feedback with us!įirefox does not fully support the required mode for cross-origin isolation, so you might encounter limitations when running a server in a preview frame within the StackBlitz editor. Learn how to configure Brave to run WebContainers. ![]() Brave īrave is a Chromium-based browser and supports WebContainers well but it ships with a more aggressive third-party blocking by default which tends to stop WebContainers from running. If you think you’re running into this issue, check out how to configure Chrome to run WebContainers. ![]() However, if you enabled blocking third-party cookies in Chrome preferences, this may prevent WebContainers from working out of the box. WebContainers are fully supported in Chrome and most Chromium-based browsers including Brave, Edge, Vivaldi, and others. Because of that, it is easier to achieve a higher degree of compatibility in a Chromium-based browser, which also runs on top of V8. Node.js very much relies on some specific features of V8, which are not part of the established JavaScript standards. After all, WebContainers strive for maximum compatibility with Node.js, which itself is based on V8, Chromium's own JavaScript engine. Note that there might be minor differences in the behavior of WebContainers in browsers that are not based on Chromium. You can read more about cross-origin isolation on our blog. We are following current specifications and continuing our talks with browser implementors to bring support to other browsers as soon as possible. Unfortunately, this feature is only enabled in Chromium-based browsers. For this to work, a new credentialless mode of cross-origin isolation that allows this is needed. However, for cross-origin isolation to work for our use case, you need to be able to embed arbitrary resources: to be able to write and test your web application seamlessly, regardless of which images or scripts you choose to include. Both features are enabled in Chromium-based browsers (Chrome, Brave, Edge, among others), Safari 16.4, and Firefox. This is a powerful feature that was disabled temporarily in light of potential security issues.Ĭross-origin isolation is the key to enabling SABs: by properly configuring some of the headers and controlling which resources are served to browsers, a site can be considered crossOriginIsolated or, in other words, secure enough to use SABs. SharedArrayBuffers (SABs) allow simultaneous access to a chunk of memory from multiple different workers. Most important among them are SharedArrayBuffer and cross-origin isolation. StackBlitz requires some of the latest additions to the Web Platform to work correctly when running WebContainers-based projects. In this case, we recommend switching to a Desktop browser that is less constrained and has more memory. Large projects may run into memory limitations because the memory usage for a web page on a mobile device is more constrained. iOS and iPadOS: beta support for Safari since iOS 16.4.Depending on your device, large projects may run into memory limitations. Android: beta support for Chrome, Chromium-based browsers and Firefox.Safari: beta support since Safari 16.4, no support for earlier versions ( see details).Some browsers may apply restrictive rules by default, and require specific configuration, like Brave. ![]() Other Chromium-based browsers: full support.WebContainers are supported in all recent desktop browsers (fully in Chrome and Chrome-based browsers, in beta in Firefox and Safari), and partially supported on Android browsers. Last update: February 2023 Supported browsers ![]()
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