Calvin f15fa56e38 refactor: reduce & remove no-op MicrotasksScope calls (#46681)
* fix: do not run microtasks in V8Serializer in browser process

* Remove no-op MicrotasksScope in `shell/browser/api/electron_api_auto_updater.cc`

This call was added in https://github.com/electron/electron/pull/40576 as an expansion of `gin_helper::EmitEvent`.

Since this only runs in the browser process and `bool ignore_browser_checkpoint = true` this code is a no-op.

Node should perform a microtask checkpoint if necessary in `node::MakeCallback`.

* Remove no-op MicrotasksScope in `shell/common/api/electron_bindings.cc`

This method is only called by the browser process. The containing function, `ElectronBindings::DidReceiveMemoryDump`, is only used in two places:

* `ElectronBindings::GetProcessMemoryInfo` in the same file, which has a `CHECK` that it's running in the browser process at the top.
* From `shell/browser/api/electron_api_web_contents.cc`, which is only run in the browser process.

Added a DCHECK for clarity and validation.

* Replace `gin_helper::MicrotasksScope` with `v8::MicrotasksScope` in `shell/renderer/`

The browser check is unnecessary in the renderer. Since `gin_helper::MicrotasksScope` will always act exactly like `v8::MicrotasksScope`, it's clear to just use the v8 object directly. This also brings them in line with the many other uses of `v8::MicrotasksScope` in `shell/renderer/`.
2025-04-19 12:18:03 -05:00
2016-10-04 22:42:49 +02:00

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The Electron framework lets you write cross-platform desktop applications using JavaScript, HTML and CSS. It is based on Node.js and Chromium and is used by the Visual Studio Code and many other apps.

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Installation

To install prebuilt Electron binaries, use npm. The preferred method is to install Electron as a development dependency in your app:

npm install electron --save-dev

For more installation options and troubleshooting tips, see installation. For info on how to manage Electron versions in your apps, see Electron versioning.

Platform support

Each Electron release provides binaries for macOS, Windows, and Linux.

  • macOS (Big Sur and up): Electron provides 64-bit Intel and Apple Silicon / ARM binaries for macOS.
  • Windows (Windows 10 and up): Electron provides ia32 (x86), x64 (amd64), and arm64 binaries for Windows. Windows on ARM support was added in Electron 5.0.8. Support for Windows 7, 8 and 8.1 was removed in Electron 23, in line with Chromium's Windows deprecation policy.
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Use Electron Fiddle to build, run, and package small Electron experiments, to see code examples for all of Electron's APIs, and to try out different versions of Electron. It's designed to make the start of your journey with Electron easier.

Alternatively, clone and run the electron/electron-quick-start repository to see a minimal Electron app in action:

git clone https://github.com/electron/electron-quick-start
cd electron-quick-start
npm install
npm start

Resources for learning Electron

Programmatic usage

Most people use Electron from the command line, but if you require electron inside your Node app (not your Electron app) it will return the file path to the binary. Use this to spawn Electron from Node scripts:

const electron = require('electron')
const proc = require('node:child_process')

// will print something similar to /Users/maf/.../Electron
console.log(electron)

// spawn Electron
const child = proc.spawn(electron)

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See the Advanced Installation Instructions to learn how to use a custom mirror.

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If you are interested in reporting/fixing issues and contributing directly to the code base, please see CONTRIBUTING.md for more information on what we're looking for and how to get started.

Community

Info on reporting bugs, getting help, finding third-party tools and sample apps, and more can be found on the Community page.

License

MIT

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