Elt access assignment uses declared, not narrowed type (#27574)

I forgot to do this in #26424. Fixes #27557 Fixes #27412
2025-11-18 17:21:48 +00:00 · 2018-10-05 11:30:10 -07:00
parent e1d346ea53
commit c080324974
8 changed files with 108 additions and 7 deletions
@@ -9305,7 +9305,9 @@ namespace ts {
                        }
                    }
                    const propType = getTypeOfSymbol(prop);
-                    return accessExpression ? getFlowTypeOfReference(accessExpression, propType) : propType;
+                    return accessExpression && getAssignmentTargetKind(accessExpression) !== AssignmentKind.Definite ?
+                        getFlowTypeOfReference(accessExpression, propType) :
+                        propType;
                }
                if (isTupleType(objectType)) {
                    const restType = getRestTypeOfTupleType(objectType);