Clear playlet lib arg (#84)

* Clear playlet lib arg

* changelog

CHANGELOG.md

@@ -19,6 +19,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New preferences system
   - Unified settings between TV and web app
   - Web API allowing to import/export preferences (no UI for that yet)
+- Added launch argument `clearPlayletLibUrls`
+  - If the dev menu is used to load a custom Playlet lib url, but the lib does not have a functionality to revert back, `curl -d '' "http://$ROKU_DEV_TARGET:8060/launch/dev?clearPlayletLibUrls=true"` can be used to remove the custom lib, and revert to using default.
 
 ### Changed
 

playlet/src/source/Main.bs

@@ -20,6 +20,8 @@ function Main(args as object) as void
     screen.setMessagePort(m.port)
     m.global = screen.getGlobalNode()
 
+    ClearPlayletLibUrlsIfNeeded(args)
+
     scene = screen.CreateScene("BootstrapScene")
     screen.show()
 
@@ -70,3 +72,10 @@ function Main(args as object) as void
     end while
 
 end function
+
+function ClearPlayletLibUrlsIfNeeded(launchArgs as object) as void
+    if launchArgs = invalid or launchArgs.clearPlayletLibUrls = invalid
+        return
+    end if
+    DeleteRegistryKey("playlet_lib_urls", "Playlet")
+end function