Update electron-release-server docs & refactor some code

README.md

@@ -228,7 +228,7 @@ the JS file method mentioned above then you can use functions normally.
 |-------------|-------------|-----------------|
 | GitHub Releases - `github` | Makes a new release for the current version (if required) and uploads the make artifacts as release assets | `process.env.GITHUB_TOKEN` - A personal access token with access to your releases <br />`forge.github_repository.owner` - The owner of the GitHub repository<br />`forge.github_repository.name` - The name of the GitHub repository <br />`forge.github_repository.draft` - Create the release as a draft, defaults to `true` <br />`forge.github_repository.prerelease` - Identify the release as a prerelease, defaults to `false` <br />`forge.github_repository.options` - An `Object` of [connection options](https://github.com/octokit/rest.js#usage), e.g., GitHub Enterprise settings or HTTP proxy URL |
 | Amazon S3 - `s3` | Uploads your artifacts to the given S3 bucket | `process.env.ELECTRON_FORGE_S3_SECRET_ACCESS_KEY` - Your secret access token for your AWS account _(falls back to the standard `AWS_SECRET_ACCESS_KEY` environment variable)_<br />`forge.s3.accessKeyId` - Your access key for your AWS account _(falls back to the standard `AWS_ACCESS_KEY_ID` environment variable)_<br />`forge.s3.bucket` - The name of the S3 bucket to upload to<br />`forge.s3.folder` - The folder path to upload to inside your bucket, defaults to your application version<br />`forge.s3.public` - Whether to make the S3 upload public, defaults to `false` |
-| [Electron Release Server](https://github.com/ArekSredzki/electron-release-server) - `electron-release-server` |  Makes a new release for the current version and uploads the artifacts to the correct platform/arch in the given version.  If the version already exists no upload will be performed.  The channel is determined from the current version. | `forge.electronReleaseServer.baseUrl` - The base URL of your release server, no trailing slash<br />`forge.electronReleaseServer.username` - The username for the admin panel on your server<br />`forge.electronReleaseServer.password` - The password for the admin panel on your server |
+| [Electron Release Server](https://github.com/ArekSredzki/electron-release-server) - `electron-release-server` |  Makes a new release for the current version and uploads the artifacts to the correct platform/arch in the given version.  If the version already exists no upload will be performed.  The channel is determined from the current version. | `forge.electronReleaseServer.baseUrl` - The base URL of your release server, no trailing slash<br />`forge.electronReleaseServer.username` - The username for the admin panel on your server<br />`forge.electronReleaseServer.password` - The password for the admin panel on your server<br />`forge.electronReleaseServer.channel` - If specified, the release channel name. Defaults to `stable`/`alpha`/`beta` depending on the app version |
 | [Snapcraft](https://snapcraft.io/store/) - `snapStore` | Uploads generated Snaps to the Snap Store. | `forge.snapStore.release` - If specified, a comma-separated list of channels to release to. |
 
 For example:

packages/publisher/electron-release-server/src/PublisherERS.js

@@ -62,9 +62,9 @@ export default class PublisherERS extends PublisherBase {
     let channel = 'stable';
     if (config.channel) {
       channel = config.channel;
-    } else if (packageJSON.version.indexOf('beta') !== -1) {
+    } else if (packageJSON.version.includes('beta')) {
       channel = 'beta';
-    } else if (packageJSON.version.indexOf('alpha') !== -1) {
+    } else if (packageJSON.version.includes('alpha')) {
       channel = 'alpha';
     }