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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'.
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