[K/JS] Rework main function call to support it in per-file

js/js.translator/testData/box/esModules/main/incremental.kt

@@ -0,0 +1,56 @@
+// EXPECTED_REACHABLE_NODES: 1281
+// ES_MODULES
+// CALL_MAIN
+
+// FILE: ok.kt
+
+package ok
+
+var ok: String = "fail"
+
+// FILE: 1.kt
+// RECOMPILE
+
+package a.a
+
+import ok.*
+
+fun main(args: Array<String>) {
+    ok = "fail: b.b"
+}
+
+// FILE: 0.kt
+
+package b
+
+import ok.*
+
+fun main(args: Array<String>) {
+    ok = "fail: b"
+}
+
+// FILE: 2.kt
+
+package a
+
+import ok.*
+
+fun main(args: Array<String>) {
+    ok = "OK"
+}
+
+// FILE: 3.kt
+
+package a.b
+
+import ok.*
+
+fun main(args: Array<String>) {
+    ok = "fail: a.b"
+}
+
+// FILE: main.kt
+
+import ok.*
+
+fun box() = ok