Autocomplete - Prevent TableState:Free properties with no writeTy to show up when requesting properties from an AST Index

Analysis/src/Autocomplete.cpp

@@ -303,6 +303,29 @@ static void autocompleteProps(
                 else
                     type = follow(prop.type());
 
+
+                // If a "TableType" is a "Free State"
+                // Somehow readTy only properties get added into it
+                // This part removes them if writeTy is empty
+                //
+                // This gets rid of unassigned properties in the autocomplete.
+                if (FFlag::LuauSolverV2)
+                {
+                    if (auto tblTy = get<TableType>(rootTy))
+                    {
+                        // This probably won't assure for nested tables?
+                        if (tblTy->state == TableState::Free)
+                        {
+                            // If this property was never written to.
+                            if (prop.writeTy == std::nullopt)
+                            {
+                                continue; // Skip this
+                            }
+                        }
+                    }
+                }
+
+
                 TypeCorrectKind typeCorrect = indexType == PropIndexType::Key
                                                   ? TypeCorrectKind::Correct
                                                   : checkTypeCorrectKind(module, typeArena, builtinTypes, nodes.back(), {{}, {}}, type);

tests/Autocomplete.test.cpp

@@ -650,6 +650,48 @@ TEST_CASE_FIXTURE(ACFixture, "dont_offer_any_suggestions_from_within_a_broken_co
     CHECK_EQ(ac.context, AutocompleteContext::Unknown);
 }
 
+TEST_CASE_FIXTURE(ACBuiltinsFixture, "autocomplete_freetable_shows_nullopt_writeTy_outsideOfFuncScope_fix")
+{
+    TypeArena arena;
+    frontend.globals.globalScope->exportedTypeBindings["FreeTable"] = TypeFun{{}, arena.addType(TableType{TableState::Free, TypeLevel{}})};
+
+    // This fix only works for the new type solver.
+    if (!FFlag::LuauSolverV2)
+        return;
+
+    CheckResult check1 = check(R"(
+local tbl_A = {} :: FreeTable
+tbl_A.abc = 1
+
+print(tbl_A.notWritingTo)
+
+function test(a)
+    a.@3
+    if (a.propertyTest) then return true end
+    return false
+end
+
+test({@2})
+
+tbl_A.@1
+)");
+
+    //auto test1 = toString(requireType("tbl_A"));
+    //auto test2 = requireType("tbl_A");
+
+    auto ac1 = autocomplete('1');
+
+    auto ac2 = autocomplete('2');
+    //auto ac3 = autocomplete('3');
+
+    // tbl_A indexing, the main problem that is to fix.
+    CHECK_EQ(ac1.entryMap.count("abc"), 1);
+    CHECK_EQ(ac1.entryMap.count("notWritingTo"), 0);
+
+    // when within function({})
+    CHECK_EQ(ac2.entryMap.count("propertyTest"), 1);
+}
+
 TEST_CASE_FIXTURE(ACFixture, "autocomplete_for_middle_keywords")
 {
     check(R"(