[JS IR] Do not forbid typeOf inlining if it is not required

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

@@ -32,7 +32,7 @@ import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
 import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
 import org.jetbrains.kotlin.util.OperatorNameConventions
 
-class FunctionInlining(val context: CommonBackendContext) : IrElementTransformerVoidWithContext() {
+class FunctionInlining(val context: CommonBackendContext, val dontInlineTypeOf: Boolean = true) : IrElementTransformerVoidWithContext() {
 
     fun inline(irModule: IrModuleFragment) = irModule.accept(this, data = null)
 
@@ -47,7 +47,8 @@ class FunctionInlining(val context: CommonBackendContext) : IrElementTransformer
             return expression
         if (Symbols.isLateinitIsInitializedPropertyGetter(callee.symbol))
             return expression
-        if (Symbols.isTypeOfIntrinsic(callee.symbol))
+        // TODO: Temporary hack till typeOf is unimplemented in K/JS
+        if (dontInlineTypeOf && Symbols.isTypeOfIntrinsic(callee.symbol))
             return expression
 
         val actualCallee = getFunctionDeclaration(callee.symbol)

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsLoweringPhases.kt

@@ -97,7 +97,7 @@ private val arrayConstructorPhase = makeJsModulePhase(
 
 private val functionInliningPhase = makeCustomJsModulePhase(
     { context, module ->
-        FunctionInlining(context).inline(module)
+        FunctionInlining(context, false).inline(module)
         module.patchDeclarationParents()
     },
     name = "FunctionInliningPhase",