JS: Add test with wrapper function

javascript/ql/test/library-tests/EndpointNaming/pack12/index.js

@@ -0,0 +1,10 @@
+function wrap(fn) {
+    return x => fn(x);
+}
+
+function f() {}
+export const f1 = wrap(f); // $ method=(pack12).f1
+export const f2 = wrap(f); // $ method=(pack12).f2
+
+function g() {}
+export const g1 = wrap(g); // $ method=(pack12).g1

javascript/ql/test/library-tests/EndpointNaming/pack12/package.json

@@ -0,0 +1,4 @@
+{
+    "name": "pack12",
+    "main": "./index.js"
+}