JS: Add test where root export object is a function

javascript/ql/test/library-tests/ModelGeneration/ModelGeneration.expected

@@ -16,6 +16,10 @@ typeModel
 | (return-this).FluentInterface.prototype.foo | (return-this).FluentInterface.prototype | Member[foo] |
 | (return-this).FluentInterface.prototype.notFluent | (return-this).FluentInterface.prototype | Member[notFluent] |
 | (return-this).FluentInterface.prototype.notFluent2 | (return-this).FluentInterface.prototype | Member[notFluent2] |
+| (root-function).PublicClass | root-function | Member[PublicClass] |
+| (root-function).PublicClass.prototype | (root-function).PublicClass | Instance |
+| (root-function).PublicClass.prototype | root-function | ReturnValue |
+| (root-function).PublicClass.prototype.method | (root-function).PublicClass.prototype | Member[method] |
 | (semi-internal-class).PublicClass | semi-internal-class | Member[PublicClass] |
 | (semi-internal-class).PublicClass.prototype | (semi-internal-class).PublicClass | Instance |
 | (semi-internal-class).PublicClass.prototype | (semi-internal-class).SemiInternalClass.prototype.method | ReturnValue |

javascript/ql/test/library-tests/ModelGeneration/root-function/package.json

@@ -0,0 +1,4 @@
+{
+    "name": "root-function",
+    "main": "root-function.js"
+}

javascript/ql/test/library-tests/ModelGeneration/root-function/root-function.js

@@ -0,0 +1,9 @@
+class C {
+    method() {}
+}
+
+module.exports = function() {
+    return new C();
+}
+
+module.exports.PublicClass = C;