Fix minor compile warnings

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/inline/FunctionInlining.kt

@@ -176,8 +176,6 @@ internal class FunctionInlining(val context: Context): IrElementTransformerVoidW
                 }
             }
 
-            val sourceFile = callee.file
-
             val transformer = ParameterSubstitutor()
             statements.transform { it.transform(transformer, data = null) }
             statements.addAll(0, evaluationStatements)

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/IrFileToJsTransformer.kt

@@ -12,8 +12,8 @@ import org.jetbrains.kotlin.js.backend.ast.JsDeclarationScope
 import org.jetbrains.kotlin.js.backend.ast.JsStatement
 
 class IrFileToJsTransformer : BaseIrElementToJsNodeTransformer<JsStatement, JsGenerationContext> {
-    override fun visitFile(declaration: IrFile, context: JsGenerationContext): JsStatement {
-        val fileContext = context.newDeclaration(JsDeclarationScope(context.currentScope, "scope for file ${declaration.path}"))
+    override fun visitFile(declaration: IrFile, data: JsGenerationContext): JsStatement {
+        val fileContext = data.newDeclaration(JsDeclarationScope(data.currentScope, "scope for file ${declaration.path}"))
         val block = fileContext.currentBlock
 
         declaration.declarations.forEach {

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt

@@ -10,7 +10,9 @@ import org.jetbrains.kotlin.backend.common.ir.isElseBranch
 import org.jetbrains.kotlin.ir.backend.js.utils.JsGenerationContext
 import org.jetbrains.kotlin.ir.backend.js.utils.Namer
 import org.jetbrains.kotlin.ir.declarations.IrFunction
-import org.jetbrains.kotlin.ir.expressions.*
+import org.jetbrains.kotlin.ir.expressions.IrExpression
+import org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression
+import org.jetbrains.kotlin.ir.expressions.IrWhen
 import org.jetbrains.kotlin.js.backend.ast.*
 
 fun jsVar(name: JsName, initializer: IrExpression?, context: JsGenerationContext): JsVars {
@@ -18,12 +20,12 @@ fun jsVar(name: JsName, initializer: IrExpression?, context: JsGenerationContext
     return JsVars(JsVars.JsVar(name, jsInitializer))
 }
 
-fun <T : JsNode, D : JsGenerationContext> IrWhen.toJsNode(
-    tr: BaseIrElementToJsNodeTransformer<T, D>,
-    data: D,
+fun <T : JsNode> IrWhen.toJsNode(
+    tr: BaseIrElementToJsNodeTransformer<T, JsGenerationContext>,
+    data: JsGenerationContext,
     node: (JsExpression, T, T?) -> T
 ): T? =
-    branches.foldRight<IrBranch, T?>(null) { br, n ->
+    branches.foldRight(null) { br, n ->
         val body = br.result.accept(tr, data)
         if (isElseBranch(br)) body
         else {
@@ -118,9 +120,7 @@ object JsAstUtils {
         thenStatement: JsStatement,
         elseStatement: JsStatement? = null
     ): JsIf {
-        var elseStatement = elseStatement
-        elseStatement = if (elseStatement != null) deBlockIfPossible(elseStatement) else null
-        return JsIf(ifExpression, deBlockIfPossible(thenStatement), elseStatement)
+        return JsIf(ifExpression, deBlockIfPossible(thenStatement), elseStatement?.let { deBlockIfPossible(it) })
     }
 
     fun and(op1: JsExpression, op2: JsExpression): JsBinaryOperation {

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/utils/AnnotationUtils.kt

@@ -21,6 +21,7 @@ object JsAnnotations {
     val jsQualifierFqn = FqName("kotlin.js.JsQualifier")
 }
 
+@Suppress("UNCHECKED_CAST")
 private fun IrCall.getSingleConstStringArgument() =
     (getValueArgument(0) as IrConst<String>).value