Uncomment check

Author: jakebailey

src/compiler/checker.ts

@@ -21672,10 +21672,12 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 tracing?.pop();
             }
 
-            // if (entry !== undefined) {
-            //     // If the previous entry and the result disagree, then something has gone wrong.
-            //     Debug.assert(!!(entry & RelationComparisonResult.Succeeded) === (result !== Ternary.False), "Cached relationship does not match recalculated result");
-            // }
+            if (entry !== undefined) {
+                // If the previous entry and the result disagree, then something has gone wrong.
+                const entrySucceeded = !!(entry & RelationComparisonResult.Succeeded);
+                const resultSucceeded = result !== Ternary.False;
+                Debug.assertEqual(entrySucceeded, resultSucceeded, "Cached relationship does not match recalculated result");
+            }
 
             if (outofbandVarianceMarkerHandler) {
                 outofbandVarianceMarkerHandler = originalHandler;