Rename JSInteropUtils into JSSymUtils.

Author: sjrd

compiler/src/dotty/tools/backend/sjs/JSCodeGen.scala

@@ -36,7 +36,7 @@ import org.scalajs.ir.OriginalName
 import org.scalajs.ir.OriginalName.NoOriginalName
 import org.scalajs.ir.Trees.OptimizerHints
 
-import dotty.tools.dotc.transform.sjs.JSInteropUtils._
+import dotty.tools.dotc.transform.sjs.JSSymUtils._
 
 import JSEncoding._
 import JSInterop._

compiler/src/dotty/tools/backend/sjs/JSInterop.scala

@@ -8,12 +8,12 @@ import NameOps._
 import StdNames._
 import Phases._
 
-import dotty.tools.dotc.transform.sjs.JSInteropUtils._
+import dotty.tools.dotc.transform.sjs.JSSymUtils._
 
 /** Management of the interoperability with JavaScript.
  *
  *  This object only contains forwarders for extension methods in
- *  `transform.sjs.JSInteropUtils`. They are kept to minimize changes in
+ *  `transform.sjs.JSSymUtils`. They are kept to minimize changes in
  *  `JSCodeGen` in the short term, but it will eventually be removed.
  */
 object JSInterop {

compiler/src/dotty/tools/dotc/transform/sjs/JSInteropUtils.scala renamed to compiler/src/dotty/tools/dotc/transform/sjs/JSSymUtils.scala

@@ -24,7 +24,13 @@ import Types._
 
 import dotty.tools.backend.sjs.JSDefinitions.jsdefn
 
-object JSInteropUtils {
+/** Additional extensions for `Symbol`s that are only relevant for Scala.js. */
+object JSSymUtils {
+  /** The result type for `sym.jsName`.
+   *
+   *  It is either a literal string, or a computed name represented by a reference
+   *  to a static `Symbol` (a `dotc.core.Symbols.Symbol`, not a `js.Symbol`).
+   */
   enum JSName {
     case Literal(name: String)
     case Computed(sym: Symbol)

compiler/src/dotty/tools/dotc/transform/sjs/PrepJSInterop.scala

@@ -27,7 +27,7 @@ import SymUtils._
 import Trees._
 import Types._
 
-import JSInteropUtils._
+import JSSymUtils._
 
 import org.scalajs.ir.Trees.{JSGlobalRef, JSNativeLoadSpec}