Docs

Author: odersky

docs/docs/reference/dropped-features/package-objects.md

@@ -0,0 +1,24 @@
+---
+layout: doc-page
+title: Dropped: Package Objects
+---
+
+Package objects
+```scala
+    package object p {
+      val a = ...
+      def b = ...
+    }
+```
+will be dropped. They are still available in Scala 3.0, but will be deprecated and removed afterwards.
+
+Package objects are no longer needed since all kinds of definitions and statements can now be written at the top-level. E.g.
+```scala
+    package p
+    val a = ...
+    def b = ...
+```
+There may be several source files in a package containing such toplevel definitions, and source files can freely mix toplevel value, method, and tyoe definitions with classes and objects.
+
+The compiler generates synthetic objects that wrap toplevel statements that are not imports, or class or object definitions. If a source file `src.scala` contains such toplevel statements, they will be put in a synthetic object named `src#object`. The wrapping is transparent, however. The definitions in `f` can still be accessed
+as members of the enclosing package.

docs/sidebar.yml

@@ -116,6 +116,8 @@ sidebar:
               url: docs/reference/dropped-features/type-projection.html
             - title: Procedure Syntax
               url: docs/reference/dropped-features/procedure-syntax.html
+            - title: Package Objects
+              uril: docs/reference/dropped-features/package-objects.html
             - title: Early Initializers
               url: docs/reference/dropped-features/early-initializers.html
             - title: Class Shadowing