Add @babel/core (parcel v7 stuff)

lib/tasks/api.rake

@@ -64,12 +64,18 @@ namespace :api do
     sh [intro, opts].join(" ")
   end
 
+  def clean_assets
+    # Clear out cache and previous builds on initial load.
+    sh [
+      "rm -rf",
+      DashboardController::CACHE_DIR,
+      DashboardController::PUBLIC_OUTPUT_DIR,
+    ].join(" ") unless ENV["NO_CLEAN"]
+  end
+
   desc "Serve javascript assets (via Parcel bundler)."
   task serve_assets: :environment do
-    # Clear out cache and previous builds on initial load.
-    sh ["rm -rf",
-        DashboardController::CACHE_DIR,
-        DashboardController::PUBLIC_OUTPUT_DIR].join(" ") unless ENV["NO_CLEAN"]
+    clean_assets
     parcel "watch", DashboardController::PARCEL_HMR_OPTS
   end
 

package.json

@@ -24,6 +24,7 @@
   "author": "farmbot.io",
   "license": "MIT",
   "dependencies": {
+    "@babel/core": "7.5.4",
     "@blueprintjs/core": "3.17.1",
     "@blueprintjs/datetime": "3.11.0",
     "@blueprintjs/select": "3.9.0",