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Last active May 17, 2025 11:16
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zod optional/nullable/nullish differences
// zod schema
z.object({
// valid if string or:
optional: z.string().optional(), // field not provided, or explicitly `undefined`
nullable: z.string().nullable(), // field explicitly `null`
nullish: z.string().nullish(), // field not provided, explicitly `null`, or explicitly `undefined`
});
// type
{
optional?: string | undefined;
nullable: string | null;
nullish?: string | null | undefined;
}
@aldidas
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aldidas commented May 4, 2025

Thanks, very helpful!

@rodrigoantas
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thanks!

@LaPulgaaa
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thanks

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