Revert "Revert "Upgrade to Scala.js 1.9.0.""

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

@@ -4558,7 +4558,14 @@ class JSCodeGen()(using genCtx: Context) {
         val module = annot.argumentConstantString(0).getOrElse {
           unexpected("could not read the module argument as a string literal")
         }
-        val path = annot.argumentConstantString(1).fold[List[String]](Nil)(parsePath)
+        val path = annot.argumentConstantString(1).fold {
+          if (annot.arguments.sizeIs < 2)
+            parsePath(sym.defaultJSName)
+          else
+            Nil
+        } { pathName =>
+          parsePath(pathName)
+        }
         val importSpec = Import(module, path)
         annot.argumentConstantString(2).fold[js.JSNativeLoadSpec] {
           importSpec

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

@@ -14,7 +14,8 @@ import Contexts._
 import Decorators._
 import DenotTransformers._
 import Flags._
-import NameKinds.DefaultGetterName
+import NameKinds.{DefaultGetterName, ModuleClassName}
+import NameOps._
 import StdNames._
 import Symbols._
 import SymUtils._
@@ -559,9 +560,14 @@ class PrepJSInterop extends MacroTransform with IdentityDenotTransformer { thisP
           case Some(annot) if annot.symbol == jsdefn.JSGlobalAnnot =>
             checkJSGlobalLiteral(annot)
             val pathName = annot.argumentConstantString(0).getOrElse {
-              if ((enclosingOwner is OwnerKind.ScalaMod) && !sym.owner.isPackageObject) {
+              val symTermName = sym.name.exclude(NameKinds.ModuleClassName).toTermName
+              if (symTermName == nme.apply) {
                 report.error(
-                    "Native JS members inside non-native objects must have an explicit name in @JSGlobal",
+                    "Native JS definitions named 'apply' must have an explicit name in @JSGlobal",
+                    annot.tree)
+              } else if (symTermName.isSetterName) {
+                report.error(
+                    "Native JS definitions with a name ending in '_=' must have an explicit name in @JSGlobal",
                     annot.tree)
               }
               sym.defaultJSName
@@ -570,6 +576,18 @@ class PrepJSInterop extends MacroTransform with IdentityDenotTransformer { thisP
 
           case Some(annot) if annot.symbol == jsdefn.JSImportAnnot =>
             checkJSImportLiteral(annot)
+            if (annot.arguments.sizeIs < 2) {
+              val symTermName = sym.name.exclude(NameKinds.ModuleClassName).toTermName
+              if (symTermName == nme.apply) {
+                report.error(
+                    "Native JS definitions named 'apply' must have an explicit name in @JSImport",
+                    annot.tree)
+              } else if (symTermName.isSetterName) {
+                report.error(
+                    "Native JS definitions with a name ending in '_=' must have an explicit name in @JSImport",
+                    annot.tree)
+              }
+            }
             annot.argumentConstantString(2).foreach { globalPathName =>
               checkGlobalRefPath(globalPathName)
             }
@@ -1107,18 +1125,19 @@ object PrepJSInterop {
    */
   private def checkJSImportLiteral(annot: Annotation)(using Context): Unit = {
     val args = annot.arguments
-    assert(args.size == 2 || args.size == 3,
-        i"@JSImport annotation $annot does not have exactly 2 or 3 arguments")
+    val argCount = args.size
+    assert(argCount >= 1 && argCount <= 3,
+        i"@JSImport annotation $annot does not have between 1 and 3 arguments")
 
     val firstArgIsValid = annot.argumentConstantString(0).isDefined
     if (!firstArgIsValid)
       report.error("The first argument to @JSImport must be a literal string.", args.head)
 
-    val secondArgIsValid = annot.argumentConstantString(1).isDefined || args(1).symbol == jsdefn.JSImportNamespaceModule
+    val secondArgIsValid = argCount < 2 || annot.argumentConstantString(1).isDefined || args(1).symbol == jsdefn.JSImportNamespaceModule
     if (!secondArgIsValid)
       report.error("The second argument to @JSImport must be literal string or the JSImport.Namespace object.", args(1))
 
-    val thirdArgIsValid = args.size < 3 || annot.argumentConstantString(2).isDefined
+    val thirdArgIsValid = argCount < 3 || annot.argumentConstantString(2).isDefined
     if (!thirdArgIsValid)
       report.error("The third argument to @JSImport, when present, must be a literal string.", args(2))
   }

project/plugins.sbt

@@ -2,7 +2,7 @@
 //
 // e.g. addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.1.0")
 
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.7.1")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.9.0")
 
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.10")
 

tests/neg-scalajs/native-load-spec-need-explicit-name.check

@@ -1,8 +1,48 @@
 -- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:6:2 ----------------------------------------------
 6 |  @JSGlobal // error
   |  ^^^^^^^^^
-  |  Native JS members inside non-native objects must have an explicit name in @JSGlobal
+  |  Native JS definitions named 'apply' must have an explicit name in @JSGlobal
 -- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:10:2 ---------------------------------------------
 10 |  @JSGlobal // error
    |  ^^^^^^^^^
-   |  Native JS members inside non-native objects must have an explicit name in @JSGlobal
+   |  Native JS definitions named 'apply' must have an explicit name in @JSGlobal
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:14:2 ---------------------------------------------
+14 |  @JSGlobal // error
+   |  ^^^^^^^^^
+   |  Native JS definitions with a name ending in '_=' must have an explicit name in @JSGlobal
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:20:2 ---------------------------------------------
+20 |  @JSGlobal // error
+   |  ^^^^^^^^^
+   |  Native JS definitions with a name ending in '_=' must have an explicit name in @JSGlobal
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:19:2 ---------------------------------------------
+19 |  @js.native // error
+   |  ^^^^^^^^^^
+   |  @js.native is not allowed on vars, lazy vals and setter defs
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:24:2 ---------------------------------------------
+24 |  @JSGlobal // error
+   |  ^^^^^^^^^
+   |  Native JS definitions named 'apply' must have an explicit name in @JSGlobal
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:30:3 ---------------------------------------------
+30 |  @JSImport("bar.js") // error
+   |  ^^^^^^^^^^^^^^^^^^^
+   |  Native JS definitions named 'apply' must have an explicit name in @JSImport
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:34:3 ---------------------------------------------
+34 |  @JSImport("bar.js") // error
+   |  ^^^^^^^^^^^^^^^^^^^
+   |  Native JS definitions named 'apply' must have an explicit name in @JSImport
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:38:3 ---------------------------------------------
+38 |  @JSImport("bar.js") // error
+   |  ^^^^^^^^^^^^^^^^^^^
+   |  Native JS definitions with a name ending in '_=' must have an explicit name in @JSImport
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:44:3 ---------------------------------------------
+44 |  @JSImport("bar.js") // error
+   |  ^^^^^^^^^^^^^^^^^^^
+   |  Native JS definitions with a name ending in '_=' must have an explicit name in @JSImport
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:43:2 ---------------------------------------------
+43 |  @js.native // error
+   |  ^^^^^^^^^^
+   |  @js.native is not allowed on vars, lazy vals and setter defs
+-- Error: tests/neg-scalajs/native-load-spec-need-explicit-name.scala:48:3 ---------------------------------------------
+48 |  @JSImport("bar.js") // error
+   |  ^^^^^^^^^^^^^^^^^^^
+   |  Native JS definitions named 'apply' must have an explicit name in @JSImport

tests/neg-scalajs/native-load-spec-need-explicit-name.scala

@@ -1,14 +1,52 @@
 import scala.scalajs.js
 import scala.scalajs.js.annotation.*
 
-object A {
+object A1 {
   @js.native
   @JSGlobal // error
-  class B extends js.Object
+  class apply extends js.Object
 
   @js.native
   @JSGlobal // error
-  object C extends js.Object
+  object apply extends js.Object
+
+  @js.native
+  @JSGlobal // error
+  class foo_= extends js.Object
+}
+
+object A2 {
+  @js.native // error
+  @JSGlobal // error
+  def foo_=(x: Int): Unit = js.native
+
+  @js.native
+  @JSGlobal // error
+  def apply(x: Int): Int = js.native
+}
+
+object B1 {
+  @js.native
+  @JSImport("bar.js") // error
+  class apply extends js.Object
+
+  @js.native
+  @JSImport("bar.js") // error
+  object apply extends js.Object
+
+  @js.native
+  @JSImport("bar.js") // error
+  class foo_= extends js.Object
+}
+
+object B2 {
+  @js.native // error
+  @JSImport("bar.js") // error
+  def foo_=(x: Int): Unit = js.native
+
+  @js.native
+  @JSImport("bar.js") // error
+  def apply(x: Int): Int = js.native
 }
 
 // scala-js#2401