tests/cases/compiler/specialIntersectionsInMappedTypes.ts(14,1): error TS18048: 'a.other' is possibly 'undefined'.


==== tests/cases/compiler/specialIntersectionsInMappedTypes.ts (1 errors) ====
    // Repro from #50683
    
    type Alignment = (string & {}) | "left" | "center" | "right";
    type Alignments = Record<Alignment, string>;
    
    const a: Alignments = {
        left: "align-left",
        center: "align-center",
        right: "align-right",
        other: "align-other",
    };
    
    a.left.length;
    a.other.length;  // Error expected here
    ~~~~~~~
!!! error TS18048: 'a.other' is possibly 'undefined'.
    