Fixed syntactic nullisness semantics for comma expressions (#60402)

2025-11-18 17:21:48 +00:00 · 2024-11-04 12:43:30 -08:00
parent 0ec4d30a6e
commit c09e2ab4ff
6 changed files with 152 additions and 5 deletions
@@ -39772,6 +39772,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                    case SyntaxKind.AmpersandAmpersandToken:
                    case SyntaxKind.AmpersandAmpersandEqualsToken:
                        return PredicateSemantics.Sometimes;
+                    case SyntaxKind.CommaToken:
+                        return getSyntacticNullishnessSemantics((node as BinaryExpression).right);
                }
                return PredicateSemantics.Never;
            case SyntaxKind.ConditionalExpression: