JS: support explicit SAM constructor invocation

compiler/testData/codegen/box/funInterface/primitiveConversions.kt

@@ -10,11 +10,37 @@ fun interface CharToAny {
     fun invoke(c: Char): Any
 }
 
-fun foo(c: CharToAny): Any = c.invoke('O')
+fun interface GenericToAny<T> {
+    fun invoke(t: T): Any
+}
+
+fun interface GenericCharToAny: GenericToAny<Char>
+
+fun foo1(c: CharToAny): Any = c.invoke('1')
+
+fun <T> foo2(t: T, g: GenericToAny<T>): Any = g.invoke(t)
+
+fun foo3(c: GenericCharToAny) = c.invoke('3')
 
 fun box(): String {
 
-    if (foo { it } !is Char) return "fail"
+    val c1 = foo1 { it }
+    if (c1 !is Char || c1 != '1') return "fail1"
+
+    val c2 = foo2<Char>('2') { it }
+    if (c2 !is Char || c2 != '2') return "fail2"
+
+    val c3 = foo3 { it }
+    if (c3 !is Char || c3 != '3') return "fail3"
+
+    val c4 = CharToAny { it }.invoke('4')
+    if (c4 !is Char || c4 != '4') return "fail4"
+
+    val c5 = GenericToAny<Char> { it }.invoke('5')
+    if (c5 !is Char || c5 != '5') return "fail5"
+
+    val c6 = GenericCharToAny { it }.invoke('6')
+    if (c6 !is Char || c6 != '6') return "fail6"
 
     return "OK"
 }

compiler/testData/codegen/box/funInterface/samConstructorExplicitInvocation.kt

@@ -0,0 +1,33 @@
+// !LANGUAGE: +FunctionalInterfaceConversion
+// IGNORE_BACKEND_FIR: JVM_IR
+// SKIP_DCE_DRIVEN
+
+fun interface S {
+    fun invoke(): String
+}
+
+fun interface G<T> {
+    fun foo(t: T): T
+}
+
+fun interface C: G<Char>
+
+fun interface C2 {
+    fun bar(c: Char): Char
+}
+
+fun box(): String {
+    val g = G<Int> { it * 10 }
+    if (g.foo(2) != 20) return "fail1"
+
+    val g2 = G { a: Char -> a + 1 }
+    if (g2.foo('a') != 'b') return "fail2"
+
+    val c = C { it + 2 }
+    if (c.foo('A') != 'C') return "fail3"
+
+    val c2 = C2 { it + 3 }
+    if (c2.bar('0') != '3') return "fail4"
+
+    return S { "OK" }.invoke()
+}