Enable apps to automatically update themselves.
Currently, only macOS and Windows are supported. There is no built-in support for auto-updater on Linux, so it is recommended to use the distribution's package manager to update your app.
In addition, there are some subtle differences on each platform:
On macOS, the
autoUpdater module is built upon Squirrel.Mac,
meaning you don't need any special setup to make it work. For server-side
requirements, you can read Server Support. Note that App
Transport Security (ATS) applies to all requests made as part of the
update process. Apps that need to disable ATS can add the
NSAllowsArbitraryLoads key to their app's plist.
Note: Your application must be signed for automatic updates on macOS.
This is a requirement of
On Windows, you have to install your app into a user's machine before you can
autoUpdater, so it is recommended that you use the
electron-winstaller, electron-forge or the grunt-electron-installer package to generate a Windows installer.
When using electron-winstaller or electron-forge make sure you do not try to update your app the first time it runs (Also see this issue for more info). It's also recommended to use electron-squirrel-startup to get desktop shortcuts for your app.
The installer generated with Squirrel will create a shortcut icon with an
Application User Model ID in the format of
com.squirrel.PACKAGE_ID.YOUR_EXE_WITHOUT_DOT_EXE, examples are
com.squirrel.code.Code. You have to use the
same ID for your app with
app.setAppUserModelId API, otherwise Windows will
not be able to pin your app properly in task bar.
Unlike Squirrel.Mac, Windows can host updates on S3 or any other static file host. You can read the documents of Squirrel.Windows to get more details about how Squirrel.Windows works.
autoUpdater object emits the following events:
Emitted when there is an error while updating.
Emitted when checking if an update has started.
Emitted when there is an available update. The update is downloaded automatically.
Emitted when there is no available update.
Emitted when an update has been downloaded.
On Windows only
releaseName is available.
Note: It is not strictly necessary to handle this event. A successfully downloaded update will still be applied the next time the application starts.
This event is emitted after a user calls
When this API is called, the
before-quit event is not emitted before all windows are closed. As a result you should listen to this event if you wish to perform actions before the windows are closed while a process is quitting, as well as listening to
autoUpdater object has the following methods:
headersObject (optional) macOS - HTTP request headers.
serverTypeString (optional) macOS - Either
default, see the Squirrel.Mac README for more information.
url and initialize the auto updater.
String - The current update feed URL.
Asks the server whether there is an update. You must call
using this API.
Restarts the app and installs the update after it has been downloaded. It
should only be called after
update-downloaded has been emitted.
Under the hood calling
autoUpdater.quitAndInstall() will close all application
windows first, and automatically call
app.quit() after all windows have been
Note: It is not strictly necessary to call this function to apply an update, as a successfully downloaded update will always be applied the next time the application starts.
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