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docs: clarify postinstall requirements (#48485)

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postinstall
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Erick Zhao
2025-10-09 00:48:47 -07:00
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@@ -12,19 +12,28 @@ network problems. The best resolution is to try switching networks, or
wait a bit and try installing again.
You can also attempt to download Electron directly from
[electron/electron/releases](https://github.com/electron/electron/releases)
[GitHub Releases](https://github.com/electron/electron/releases)
if installing via `npm` is failing.
## When will Electron upgrade to latest Chrome?
If you need to install Electron through a custom mirror or proxy, see
the [Advanced Installation](./tutorial/installation.md) documentation for more details.
The Chrome version of Electron is usually bumped within one or two weeks after
a new stable Chrome version gets released. This estimate is not guaranteed and
depends on the amount of work involved with upgrading.
## How are Electron binaries downloaded?
Only the stable channel of Chrome is used. If an important fix is in beta or dev
channel, we will back-port it.
When you run `npm install electron`, the Electron binary for the corresponding version is downloaded
into your project's `node_modules` folder via npm's `postinstall` lifecycle script.
For more information, please see the [security introduction](tutorial/security.md).
This logic is handled by the [`@electron/get`](https://github.com/electron/get) utility package
under the hood.
## When will Electron upgrade to latest Chromium?
Every new major version of Electron releases with a Chromium major version upgrade. By releasing every
8 weeks, Electron is able to pull in every other major Chromium release on the very same day that it
releases upstream. Security fixes will be backported to stable release channels ahead of time.
See the [Electron Releases](./tutorial/electron-timelines.md) documentation for more details or
[releases.electronjs.org](https://releases.electronjs.org) to see our Release Status dashboard.
## When will Electron upgrade to latest Node.js?