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# electron-packager API
Short Promise example:
```javascript
const packager = require('electron-packager')
packager(options)
.then(appPaths => { /* … */ })
```
Short [(deprecated) callback syntax](#callback) example:
```javascript
const packager = require('electron-packager')
packager(options, function done_callback (err, appPaths) { /* … */ })
```
## `options`
### Required
#### `dir`
*String*
The source directory.
### Optional
#### All Platforms
##### `afterCopy`
*Array of Functions*
An array of functions to be called after your app directory has been copied to a temporary directory. Each function is called with five parameters:
- `buildPath` (*String*): The path to the temporary folder where your app has been copied to
- `electronVersion` (*String*): The version of electron you are packaging for
- `platform` (*String*): The target platform you are packaging for
- `arch` (*String*): The target architecture you are packaging for
- `callback` (*Function*): Must be called once you have completed your actions
By default, the functions are called in parallel (via
[`Promise.all`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all)).
If you need the functions called serially, there is a utility function provided:
```javascript
const packager = require('electron-packager')
const serialHooks = require('electron-packager/hooks').serialHooks
packager({
// ...
afterCopy: [serialHooks([
(buildPath, electronVersion, platform, arch, callback) => {
setTimeout(() => {
console.log('first function')
callback()
}, 1000)
},
(buildPath, electronVersion, platform, arch, callback) => {
console.log('second function')
callback()
}
])],
// ...
})
```
##### `afterExtract`
*Array of Functions*
An array of functions to be called after Electron has been extracted to a temporary directory. Each function is called with five parameters:
- `buildPath` (*String*): The path to the temporary folder where Electron has been extracted to
- `electronVersion` (*String*): The version of electron you are packaging for
- `platform` (*String*): The target platform you are packaging for
- `arch` (*String*): The target architecture you are packaging for
- `callback` (*Function*): Must be called once you have completed your actions
By default, the functions are called in parallel (via
[`Promise.all`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all)).
If you need the functions called serially, there is a utility function provided:
```javascript
const packager = require('electron-packager')
const serialHooks = require('electron-packager/hooks').serialHooks
packager({
// ...
afterExtract: [serialHooks([
(buildPath, electronVersion, platform, arch, callback) => {
setTimeout(() => {
console.log('first function')
callback()
}, 1000)
},
(buildPath, electronVersion, platform, arch, callback) => {
console.log('second function')
callback()
}
])],
// ...
})
```
##### `afterPrune`
*Array of Functions*
An array of functions to be called after the prune command has been run
in the temporary directory. Each function is called with five parameters:
- `buildPath` (*String*): The path to the temporary folder where your app has been copied to
- `electronVersion` (*String*): The version of electron you are packaging for
- `platform` (*String*): The target platform you are packaging for
- `arch` (*String*): The target architecture you are packaging for
- `callback` (*Function*): Must be called once you have completed your actions
**NOTE:** None of these functions will be called if the `prune` option is `false`.
By default, the functions are called in parallel (via
[`Promise.all`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all)).
If you need the functions called serially, there is a utility function provided:
```javascript
const packager = require('electron-packager')
const serialHooks = require('electron-packager/hooks').serialHooks
packager({
// ...
afterPrune: [serialHooks([
(buildPath, electronVersion, platform, arch, callback) => {
setTimeout(() => {
console.log('first function')
callback()
}, 1000)
},
(buildPath, electronVersion, platform, arch, callback) => {
console.log('second function')
callback()
}
])],
// ...
})
```
##### `all`
*Boolean*
When `true`, sets both [`arch`](#arch) and [`platform`](#platform) to `all`.
##### `appCopyright`
*String*
The human-readable copyright line for the app. Maps to the `LegalCopyright` metadata property on Windows, and `NSHumanReadableCopyright` on OS X.
##### `appVersion`
*String*
The release version of the application. By default the `version` property in the `package.json` is used but it can be overridden with this argument. If neither are provided, the version of Electron will be used. Maps to the `ProductVersion` metadata property on Windows, and `CFBundleShortVersionString` on OS X.
#### `arch`
*String* (default: the arch of the host computer running Node)
Allowed values: `ia32`, `x64`, `armv7l`, `arm64` _(Electron 1.8.0 and above)_, `mips64el`
_(Electron 1.8.2-beta.5 and above)_, `all`
The target system architecture(s) to build for.
Not required if the [`all`](#all) option is set.
If `arch` is set to `all`, all supported architectures for the target platforms specified by [`platform`](#platform) will be built.
Arbitrary combinations of individual architectures are also supported via a comma-delimited string or array of strings.
The non-`all` values correspond to the architecture names used by [Electron releases]. This value
is not restricted to the official set if [`download.mirror`](#download) is set.
##### `asar`
*Boolean* or *Object* (default: `false`)
Whether to package the application's source code into an archive, using [Electron's archive format](https://github.com/electron/asar). Reasons why you may want to enable this feature are described in [an application packaging tutorial in Electron's documentation](http://electron.atom.io/docs/v0.36.0/tutorial/application-packaging/). When the value is `true`, pass default configuration to the `asar` module. The configuration values listed below can be customized when the value is an `Object`. Supported parameters include, but are not limited to:
- `ordering` (*String*): A path to an ordering file for packing files. An explanation can be found on the [Atom issue tracker](https://github.com/atom/atom/issues/10163).
- `unpack` (*String*): A [glob expression](https://github.com/isaacs/minimatch#features), when specified, unpacks the file with matching names to the `app.asar.unpacked` directory.
- `unpackDir` (*String*): Unpacks the dir to the `app.asar.unpacked` directory whose names exactly or pattern match this string. The `asar.unpackDir` is relative to `dir`.
Some examples:
- `asar.unpackDir = 'sub_dir'` will unpack the directory `/<dir>/sub_dir`
- `asar.unpackDir = '**/{sub_dir1/sub_sub_dir,sub_dir2}/*'` will unpack the directories `/<dir>/sub_dir1/sub_sub_dir` and `/<dir>/sub_dir2`, but it will not include their subdirectories.
- `asar.unpackDir = '**/{sub_dir1/sub_sub_dir,sub_dir2}/**'` will unpack the subdirectories of the directories `/<dir>/sub_dir1/sub_sub_dir` and `/<dir>/sub_dir2`.
- `asar.unpackDir = '**/{sub_dir1/sub_sub_dir,sub_dir2}/**/*'` will unpack the directories `/<dir>/sub_dir1/sub_sub_dir` and `/<dir>/sub_dir2` and their subdirectories.
##### `buildVersion`
*String*
The build version of the application. Defaults to the value of [`appVersion`](#appversion). Maps to the `FileVersion` metadata property on Windows, and `CFBundleVersion` on OS X.
##### `derefSymlinks`
*Boolean* (default: `true`)
Whether symlinks should be dereferenced during the copying of the application source.
##### `download`
*Object*
If present, passes custom options to [`electron-download`](https://www.npmjs.com/package/electron-download)
(see the link for more detailed option descriptions and the defaults). Supported parameters include,
but are not limited to:
- `cache` (*String*): The directory where prebuilt, pre-packaged Electron downloads are cached.
- `mirror` (*String*): The URL to override the default Electron download location.
- `quiet` (*Boolean* - default: `false`): Whether to show a progress bar when downloading Electron.
- `strictSSL` (*Boolean* - default: `true`): Whether SSL certificates are required to be valid when
downloading Electron.
##### `electronVersion`
*String*
The Electron version with which the app is built (without the leading 'v') - for example,
[`1.4.13`](https://github.com/electron/electron/releases/tag/v1.4.13). See [Electron releases] for
valid versions. If omitted, it will use the version of the nearest local installation of
`electron`, `electron-prebuilt-compile`, or `electron-prebuilt`, defined in `package.json` in either
`dependencies` or `devDependencies`.
##### `darwinDarkModeSupport`
*Boolean* (default: `false`)
Forces support for Mojave (macOS 10.14) dark mode in your packaged app, this sets the
`NSRequiresAquaSystemAppearance` key to `false` in your app's `Info.plist`. For more
information see the [Apple developer documentation](https://developer.apple.com/documentation/appkit/nsappearancecustomization/choosing_a_specific_appearance_for_your_app).
##### `extraResource`
*String* or *Array* of *String*s
One or more files to be copied directly into the app's `Contents/Resources` directory for OS X
target platforms, and the `resources` directory for other target platforms.
##### `executableName`
*String*
The name of the executable file (sans file extension). Defaults to the value for the [`name`](#name)
parameter. For `darwin` or `mas` target platforms, this does not affect the name of the `.app`
folder - this will use [`name`](#name) parameter.
##### `icon`
*String*
The local path to the icon file, if the target platform supports setting embedding an icon.
Currently you must look for conversion tools in order to supply an icon in the format required by the platform:
- OS X: `.icns`
- Windows: `.ico` ([See the readme](https://github.com/electron-userland/electron-packager#building-windows-apps-from-non-windows-platforms) for details on non-Windows platforms)
- Linux: this option is not required, as the dock/window list icon is set via
[the `icon` option in the `BrowserWindow` constructor](http://electron.atom.io/docs/api/browser-window/#new-browserwindowoptions).
*Please note that you need to use a PNG, and not the OS X or Windows icon formats, in order for it
to show up in the dock/window list.* Setting the icon in the file manager is not currently supported.
If the file extension is omitted, it is auto-completed to the correct extension based on the platform, including when [`--platform=all`](#platform) is in effect.
##### `ignore`
*RegExp*, *Array* of *RegExp*s, or *Function*
One or more additional [regular expression](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions)
patterns which specify which files to ignore when copying files to create the app bundle(s). The
regular expressions are matched against the absolute path of a given file/directory to be copied.
The following paths are always ignored (*when you aren't using the predicate function that is
described after the list*):
* the directory specified by the [`out`](#out) parameter
* the temporary directory used to build the Electron app
* `node_modules/.bin`
* `node_modules/electron`
* `node_modules/electron-prebuilt`
* `node_modules/electron-prebuilt-compile`
* `node_modules/electron-packager`
* `.git`
* files and folders ending in `.o` and `.obj`
**Please note that [glob patterns](https://en.wikipedia.org/wiki/Glob_%28programming%29) will not work.**
**Note**: If you're trying to ignore Node modules specified in `devDependencies`, you may want to
use [`prune`](#prune) instead.
Alternatively, this can be a predicate function that, given an absolute file path, returns `true` if
the file should be ignored, or `false` if the file should be kept. *This does not use any of the
default ignored directories listed above.*
##### `name`
*String*
The application name. If omitted, it will use the `productName` or `name` value from the nearest `package.json`.
**Regardless of source, characters in the Electron app name which are not allowed in all target
platforms' filenames (e.g., `/`), will be replaced by hyphens (`-`).**
##### `out`
*String* (default: current working directory)
The base directory where the finished package(s) are created.
##### `overwrite`
*Boolean* (default: `false`)
Whether to replace an already existing output directory for a given platform (`true`) or skip recreating it (`false`).
##### `platform`
*String* (default: the arch of the host computer running Node)
Allowed values: `linux`, `win32`, `darwin`, `mas`, `all`
The target platform(s) to build for.
Not required if the [`all`](#all) option is set.
If `platform` is set to `all`, all [supported target platforms](#supported-platforms) for the target architectures specified by [`arch`](#arch) will be built.
Arbitrary combinations of individual platforms are also supported via a comma-delimited string or array of strings.
The non-`all` values correspond to the platform names used by [Electron releases]. This value
is not restricted to the official set if [`download.mirror`](#download) is set.
##### `prune`
*Boolean* (default: `true`)
Walks the `node_modules` dependency tree to remove all of the packages specified in the
`devDependencies` section of `package.json` from the outputted Electron app.
##### `quiet`
*Boolean* (default: `false`)
If `true`, disables printing informational and warning messages to the console when packaging the
application. This does *not* disable errors.
##### `tmpdir`
*String* or *`false`* (default: system temp directory)
The base directory to use as a temp directory. Set to `false` to disable use of a temporary directory.
#### OS X/Mac App Store targets only
##### `appBundleId`
*String*
The bundle identifier to use in the application's plist.
##### `appCategoryType`
*String*
The application category type, as shown in the Finder via *View → Arrange by Application Category* when viewing the Applications directory.
For example, `app-category-type=public.app-category.developer-tools` will set the application category to *Developer Tools*.
Valid values are listed in [Apple's documentation](https://developer.apple.com/library/ios/documentation/General/Reference/InfoPlistKeyReference/Articles/LaunchServicesKeys.html#//apple_ref/doc/uid/TP40009250-SW8).
##### `extendInfo`
*String* or *Object*
When the value is a `String`, the filename of a plist file. Its contents are added to the app's plist. When the value is an `Object`, an already-parsed plist data structure that is merged into the app's plist.
Entries from `extend-info` override entries in the base plist file supplied by `electron`, `electron-prebuilt-compile`, or `electron-prebuilt`, but are overridden by other explicit arguments such as [`appVersion`](#appversion) or [`appBundleId`](#appbundleid).
##### `helperBundleId`
*String*
The bundle identifier to use in the application helper's plist.
##### `osxSign`
*Object* or *`true`*
If present, signs OS X target apps when the host platform is OS X and XCode is installed. When the value is `true`, pass default configuration to the signing module. The configuration values listed below can be customized when the value is an `Object`. See [electron-osx-sign](https://www.npmjs.com/package/electron-osx-sign#opts) for more detailed option descriptions and the defaults.
- `identity` (*String*): The identity used when signing the package via `codesign`.
- `entitlements` (*String*): The path to the 'parent' entitlements.
- `entitlements-inherit` (*String*): The path to the 'child' entitlements.
##### `protocols`
*Array* of *Object*​s
One or more URL protocols associated with the Electron app.
Each *Object* is required to have the following properties:
- `name` (*String*): The descriptive name. Maps to the `CFBundleURLName` metadata property.
- `schemes` (*Array* of *String*​s): One or more protocol schemes associated with the app. For
example, specifying `myapp` would cause URLs such as `myapp://path` to be opened with the app.
Maps to the `CFBundleURLSchemes` metadata property.
#### Windows targets only
##### `win32metadata`
*Object*
Object (also known as a "hash") of application metadata to embed into the executable:
- `CompanyName` (defaults to `author` name from the nearest `package.json`)
- `FileDescription` (defaults to either `productName` or `name` from the nearest `package.json`)
- `OriginalFilename` (defaults to renamed `.exe` file)
- `ProductName` (defaults to either `productName` or `name` from the nearest `package.json`)
- `InternalName` (defaults to either `productName` or `name` from the nearest `package.json`)
- `requested-execution-level`
- `application-manifest`
For more information, see the [`node-rcedit` module](https://github.com/electron/node-rcedit).
## callback
### `err`
*Error* (or *Array*, in the case of an `copy` error)
Contains errors, if any.
### `appPaths`
*Array* of *String*s
Paths to the newly created application bundles.
[Electron releases]: https://github.com/electron/electron/releases
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