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Informations about the package electron-installer
electron-installer
A Composer package which installs the Electron binary (Linux, Windows, Mac) into /bin
of your project.
Table of Contents
- Installation
- How to require a specific version of Electron?
- How does this work internally?
- How to access the binary easily by using ElectronInstaller\ElectronBinary?
- How to package for another platform by overriding platform requirements?
- How to use a Mirror or a custom CDN URL for downloading?
Installation
To install Electron as a local, per-project dependency to your project, simply add a dependency
on uuf6429/electron-installer
to your project's composer.json
file.
For a development dependency, change require
to require-dev
.
The default download source used is: https://github.com/electron/electron/releases/ You might change it by setting a custom CDN URL, which is explained in the section "Downloading from a mirror".
By setting the Composer configuration directive bin-dir
,
the vendor binaries
will be installed into the defined folder.
Important! Composer will install the binaries into vendor\bin
by default.
The scripts
section is necessary, because currently Composer does not pass events to the handler scripts of
dependencies. If you leave it away, you might execute the installer manually.
Now, assuming that the scripts section is set up as required, the Electron binary will be installed into the /bin
folder and updated alongside the project's Composer dependencies.
How to require specific versions of Electron?
The environment and server variable ELECTRON_VERSION
enables you specify the version requirement at the time of
packaging.
You can also set the electron-version
in the extra
section of your composer.json
:
The search order for the version is $_ENV
, $_SERVER
, composer.json
(extra section), fallback to the latest version
on GitHub.
How does this work internally?
Fetching the Electron Installer
In your composer.json you require the package "electron-installer". The package is fetched by composer and stored
into ./vendor/uuf6429/electron-installer
. It contains only one file the ElectronInstaller\\Installer
.
Platform-specific download of Electron
The ElectronInstaller\\Installer
is run as a "post-install-cmd". That's why you need the "scripts" section in your "
composer.json". The installer creates a new composer in-memory package "electron", detects your OS and downloads the
correct Electron version to the folder ./vendor/uuf6429/electron
. All Electron files reside there.
Installation into /bin
folder
The binary is linked from ./vendor/uuf6429/electron
to your composer configured bin-dir
folder.
Generation of ElectronBinary
The installer generates a PHP file ElectronInstaller/ElectronBinary
and inserts the path to the binary.
ElectronBinary
To access information about the binary, the class ElectronBinary
is created automatically during installation.
The class defines the following constants:
BIN
is the full-path to the Electron binary file, e.g./your_project/bin/electron
DIR
is the folder of the binary, e.g./your_project/bin
VERSION
the version used during the installation, e.g.16.1.2
Usage:
Override platform requirements
The environment and server variables ELECTRON_PLATFORM
and ELECTRON_ARCHITECTURE
enable you to override the platform
requirements at the time of packaging. This decouples the packaging system from the target system. It allows to package
on Linux for MacOSX or on Windows for Linux.
Possible values for
ELECTRON_PLATFORM
are:darwin
,win32
,linux
.ELECTRON_ARCHITECTURE
are:ia32
orx64
.
Downloading from a mirror
You can override the default download location of the Electron binary file by setting it in one of these locations:
- The environment variable
ELECTRON_CDNURL
- The server variable
ELECTRON_CDNURL
- In your
composer.json
by using$['extra']['uuf6429/electron-installer']['cdnurl']
:
Default Download Location
The default download location is GitHub: https://github.com/electron/electron/releases/
. You don't need to set it
explicitly. It's used when ELECTRON_CDNURL
is not set.
Automatic download retrying with version lowering on 404
In case downloading an archive fails with HttpStatusCode 404 (resource not found), the downloader will automatically lower the version to the next available version and retry.
A couple of notes on this behaviour:
- The number of retries is determined by the number of Electron versions in
getElectronVersions()
. - Since you can only request one specific version, it is possible to fall back to a very old version, if all others failed for some reason.
- On the next composer update/install, it will go through this process again. Therefore, it is possible that having a lot of broken versions could slow the installation process.
All versions of electron-installer with dependencies
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