Electron 34.0.0
Electron 34.0.0 has been released! It includes upgrades to Chromium 132.0.6834.83, V8 13.2, and Node 20.18.1.
The Electron team is excited to announce the release of Electron 34.0.0! You can install it with npm via npm install electron@latest or download it from our releases website. Continue reading for details about this release.
If you have any feedback, please share it with us on Bluesky or Mastodon, or join our community Discord! Bugs and feature requests can be reported in Electron's issue tracker.
Notable Changes
HTTP Compression Shared Dictionary Management APIs
HTTP compression allows data to be compressed by a web server before being received by the browser. Modern versions of Chromium support Brotli and Zstandard, which are newer compression algorithms that perform better for text files than older schemes such as gzip.
Custom shared dictionaries further improve the efficiency of Brotli and Zstandard compression. See the Chrome for Developers blog on shared dictionaries for more information.
@felixrieseberg added the following APIs in #44950 to manage shared dictionaries at the Session level:
session.getSharedDictionaryUsageInfo()session.getSharedDictionaryInfo(options)session.clearSharedDictionaryCache()session.clearSharedDictionaryCacheForIsolationKey(options)
Unresponsive Renderer JavaScript Call Stacks
Electron's unresponsive event occurs whenever a renderer process hangs for an excessive period of time. The new WebFrameMain.collectJavaScriptCallStack() API added by @samuelmaddock in #44204 allows you to collect the JavaScript call stack from the associated WebFrameMain object (webContnets.mainFrame).
This API can be useful to determine why the frame is unresponsive in cases where there's long-running JavaScript events causing the process to hang. For more information, see the proposed web standard Crash Reporting API.
const { app } = require('electron');
app.commandLine.appendSwitch(
'enable-features',
'DocumentPolicyIncludeJSCallStacksInCrashReports',
);
app.on('web-contents-created', (_, webContents) => {
webContents.on('unresponsive', async () => {
// Interrupt execution and collect call stack from unresponsive renderer
const callStack = await webContents.mainFrame.collectJavaScriptCallStack();
console.log('Renderer unresponsive\n', callStack);
});
});
This API requires the 'Document-Policy': 'include-js-call-stacks-in-crash-reports' header to be enabled. See #45356 for more details.



