feat: starmelon reads files or stdin

examples/single-page/src/InvalidModule.elm

@@ -0,0 +1 @@
+not a valid module exposing (..)

examples/single-page/src/Main.elm

@@ -1,8 +1,11 @@
-module Main exposing (view, view2)
+module Main exposing (view, view2, view3)
 
 import Html exposing (Html, div, text)
 import Svg exposing (Svg, svg)
 import Array exposing (Array)
+import Bytes exposing (Bytes)
+import Bytes.Decode
+
 
 type alias Model =
     { a : Int
@@ -17,3 +20,21 @@ view : String -> Html msg
 view model =
     div []
         [ text <| "Hello world" ++ model ]
+
+view3: Bytes -> Html msg
+view3 model =
+    case
+        Bytes.Decode.decode
+            (Bytes.Decode.string (Bytes.width model))
+            model
+    of
+        Just decoded ->
+            div []
+                [ text <| "Hello world" ++ decoded ]
+
+        Nothing ->
+            text "Failed to decode"
+
+badReturnType : String -> Int
+badReturnType _ =
+    42