documentit/node_modules/electron-download/readme.md

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2018-01-05 18:48:13 +00:00
# electron-download
[![Travis Build Status](https://travis-ci.org/electron-userland/electron-download.svg?branch=master)](https://travis-ci.org/electron-userland/electron-download)
[![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/dtu6of8wgtva0t8l?svg=true)](https://ci.appveyor.com/project/Atom/electron-download)
[![NPM](https://nodei.co/npm/electron-download.png?downloads=true)](https://www.npmjs.com/package/electron-download)
Downloads an Electron release zip from GitHub.
Used by [electron-prebuilt](https://npmjs.org/electron-prebuilt) and [electron-packager](https://npmjs.org/electron-packager)
### Usage
```shell
$ npm install --global electron-download
$ electron-download --version=0.31.1
```
```javascript
var download = require('electron-download')
download({
version: '0.25.1',
arch: 'ia32',
platform: 'win32',
cache: './zips' // defaults to <user's home directory>/.electron
}, function (err, zipPath) {
// zipPath will be the path of the zip that it downloaded.
// If the zip was already cached it will skip
// downloading and call the cb with the cached zip path.
// If it wasn't cached it will download the zip and save
// it in the cache path.
})
```
If you don't specify `arch` or `platform` args it will use the built-in `os` module to get the values from the current OS. Specifying `version` is mandatory. If there is a `SHASUMS256.txt` file available for the `version`, the file downloaded will be validated against its checksum to ensure that it was downloaded without errors.
You can also use `electron-download` to download the `chromedriver`, `ffmpeg`,
`mksnapshot`, and symbols assets for a specific Electron release. This can be
configured by setting the `chromedriver`, `ffmpeg`, `mksnapshot`, or
`symbols` property to `true` in the specified options object. Only one of
these options may be specified per download call.
You can force a re-download of the asset and the `SHASUM` file by setting the
`force` option to `true`.
If you would like to override the mirror location, three options are available. The mirror URL is composed as `url = ELECTRON_MIRROR + ELECTRON_CUSTOM_DIR + '/' + ELECTRON_CUSTOM_FILENAME`.
You can set the `ELECTRON_MIRROR` or [`NPM_CONFIG_ELECTRON_MIRROR`](https://docs.npmjs.com/misc/config#environment-variables) environment variable or `mirror` opt variable to use a custom base URL for grabbing Electron zips. The same pattern applies to `ELECTRON_CUSTOM_DIR` and `ELECTRON_CUSTOM_FILENAME`:
```plain
## Electron Mirror of China
ELECTRON_MIRROR="https://npm.taobao.org/mirrors/electron/"
## or for a local mirror
ELECTRON_MIRROR="https://10.1.2.105/"
ELECTRON_CUSTOM_DIR="our/internal/filePath"
```
You can set ELECTRON_MIRROR in `.npmrc` as well, using the lowercase name:
```plain
electron_mirror=https://10.1.2.105/
```