rra/ilgonmic/exported-bridges-2

[JS IR] Use js name for signature

[JS] bridgeSavingExport only for JS IR

[JS IR] Fix test

[JS IR] Stable and non stable signatures

[JS IR] Consider return type in js signature and erase for JS name signature

[JS IR] Copy signature from wasm to JS and export bridge, not original

Merge-request: KT-MR-5174

js/js.translator/testData/box/export/bridgeSavingAfterExport.kt

@@ -0,0 +1,29 @@
+// TARGET_BACKEND: JS_IR
+// RUN_PLAIN_BOX_FUNCTION
+// INFER_MAIN_MODULE
+
+// MODULE: bridge_saving_after_export
+// FILE: lib.kt
+
+@JsExport
+open class A<T> {
+    open fun foo(value: T): T = value
+}
+
+@JsExport
+class B: A<String>() {
+    override fun foo(value: String): String = value
+}
+
+// FILE: test.js
+function box() {
+    var a = new this["bridge_saving_after_export"].A()
+    var aFoo = a.foo("ok")
+    if (aFoo != "ok") return "fail 1"
+
+    var b = new this["bridge_saving_after_export"].B()
+    var bFoo = b.foo("ok")
+    if (bFoo != "ok") return "fail 2"
+
+    return "OK"
+}