Various fixes to auto-update script:

 - Avoid conflicting `babelrc`s from node_modules
 - Add `-UseBasicParsing` to WebRequest so it works in situations where the MSIE engine is not available (we don't need that fancy stuff)
- Split `npm-check-updates` call into several calls, as the one regex wasn't working as expected

gulpfile.js

@@ -15,7 +15,11 @@ function webpackBuild(filename, libraryName, version) {
           test: /\.js$/,
           loader: 'babel',
           query: {
-            presets: ['es2015', 'stage-0']
+            // Some of the node_modules may have their own "babel" section in
+            // their project.json (or a ".babelrc" file). We need to ignore
+            // those as we're using our own Babel options.
+            babelrc: false,
+            presets: ['es2015', 'stage-0'],
           }
         },
         {

scripts/update.ps1

@@ -90,6 +90,7 @@ function Add-GitHubReleaseAsset(
     -Uri ('{0}?name={1}&access_token={2}' -f $upload_url, $filename, $Env:GITHUB_TOKEN) `
     -Method Post `
     -ContentType 'text/javascript; charset=utf-8' `
+    -UseBasicParsing `
     -Body (Get-Content -Path $Path -Raw -Encoding UTF8) | Out-Null
 
   Write-Output ('Uploaded ' + $filename)
@@ -112,7 +113,10 @@ if ($Clean) {
 
 # We need to run npm install in order to be able to use npm-check-updates
 npm install; Assert-LastExitCode
-.\node_modules\.bin\npm-check-updates -a /^babel/; Assert-LastExitCode
+#.\node_modules\.bin\npm-check-updates -u -a --packageFile ./package.json /^babel\-(plugin|preset|core)/; Assert-LastExitCode
+.\node_modules\.bin\npm-check-updates -u -a --packageFile ./package.json /^babel\-plugin/; Assert-LastExitCode
+.\node_modules\.bin\npm-check-updates -u -a --packageFile ./package.json /^babel\-preset/; Assert-LastExitCode
+.\node_modules\.bin\npm-check-updates -u -a --packageFile ./package.json /^babel\-core/; Assert-LastExitCode
 
 $package_json = Get-Content -Path package.json | ConvertFrom-Json
 $babel_version = Get-LatestDependencyVersion -Package $package_json -Filter 'babel\-(plugin|preset|core)'