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Merge of two enums zod

I have 2 enums, const Option1 = z.enum(["option1"]) and const Option2 = z.enum(["option2"]). I want to merge these two into z.ZodEnum<["option1", "option2"]>

The only way I came up with so far is

export const Options = z.enum([
  ...Option1.options,
  ...Option2.options,
]);
// Options.options is now ["option1", "option2"]

Is there any zod native way to do this?

Solution

  • the issue you're facing here is due to the type of the combined options.

    const allOptions = [...Option1.options, ...Option2.options]

    the inferred type of allOptions in this case is: ("option1" | "option2")[] and zod can't create an enum out of that.

    however, if you define allOptions like this:

    const allOptions = [...Option1.options, ...Option2.options] as const

    then the inferred type of allOptions will be the tuple ["option1", "option2"] which is exactly what you want.

    so, putting that all together, to combine the options, you'd say:

    const Options = z.enum([...Option1.options, ...Option2.options] as const)

    and the inferred type of Options will be z.ZodEnum<["option1", "option2"]>