8000 V4: `discriminatedUnion.options` returns `undefined`, but types are valid in TypeScript · Issue #4394 · colinhacks/zod · GitHub
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V4: discriminatedUnion.options returns undefined, but types are valid in TypeScript #4394

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hibanka opened this issue May 17, 2025 · 0 comments
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V4: discriminatedUnion.options returns undefined, but types are valid in TypeScript #4394

hibanka opened this issue May 17, 2025 · 0 comments

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@hibanka
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hibanka commented May 17, 2025 •
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Zod version: zod@3.25.0-beta.20250517T081109

import { z } from 'zod/v4';

const MyResult = z.discriminatedUnion([
  z.object({ status: z.literal('success'), data: z.string() }),
  z.object({ status: z.literal('failed'), error: z.string() }),
]);

// Works as expected.
MyResult.def.options.length;

// Does not work.
// I understand this is considered a legacy approach,
// yet TypeScript still treats this as valid code.
// This will throw a TypeError at runtime because `options` is `undefined`.
MyResult.options.length;
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