✨ Support entry files in dev/ as well as src/.

Author: hayleigh-dot-dev

src/lustre/dev.gleam

@@ -483,10 +483,14 @@ directories are always watched and do not need to be specified here.
     proxy_to(flags) |> result.unwrap(""),
   ))
 
-  let entry = case entries {
-    [] -> project.name
-    [entry, ..] -> entry
-  }
+  use entry <- result.try(case entries {
+    [] -> Ok(project.name)
+    [entry, ..] ->
+      case project.exists(project, entry) {
+        True -> Ok(entry)
+        False -> Error(error.UnknownGleamModule(name: entry))
+      }
+  })
 
   use tailwind_entry <- result.try(case tailwind.detect(project, entry) {
     Ok(tailwind.HasTailwindEntry) -> Ok(Some(entry))

src/lustre_dev_tools/dev/live_reload.gleam

@@ -89,16 +89,18 @@ pub fn start(
       mist.continue(Nil)
     }
 
-    mist.Custom(watcher.BuildError(reason:)) -> {
-      let message = ansi.strip(error.explain(reason))
-
-      let _ =
-        json.object([
-          #("type", json.string("error")),
-          #("message", json.string(message)),
-        ])
-        |> json.to_string
-        |> mist.send_text_frame(connection, _)
+    mist.Custom(watcher.BuildError) -> {
+      let _ = case booklet.get(error) {
+        Some(reason) ->
+          json.object([
+            #("type", json.string("error")),
+            #("message", json.string(ansi.strip(error.explain(reason)))),
+          ])
+          |> json.to_string
+          |> mist.send_text_frame(connection, _)
+
+        None -> Ok(Nil)
+      }
 
       mist.continue(Nil)
     }

src/lustre_dev_tools/dev/watcher.gleam

@@ -35,7 +35,7 @@ pub type Watcher =
 pub type Event {
   Change(in: String, path: String)
   Styles
-  BuildError(reason: Error)
+  BuildError
 }
 
 //
@@ -271,7 +271,7 @@ fn start_build_actor(
         )
 
         group_registry.members(watcher, "watch")
-        |> list.each(process.send(_, BuildError(reason:)))
+        |> list.each(process.send(_, BuildError))
 
         actor.continue(Waiting(self:))
       }

src/lustre_dev_tools/project.gleam

@@ -123,6 +123,8 @@ fn find_root(path: String) -> String {
 pub fn exists(project: Project, module: String) -> Bool {
   case simplifile.is_file(filepath.join(project.src, module <> ".gleam")) {
     Ok(True) -> True
-    Ok(False) | Error(_) -> False
+    Ok(False) | Error(_) ->
+      simplifile.is_file(filepath.join(project.dev, module <> ".gleam"))
+      |> result.unwrap(False)
   }
 }