Zod•3mo ago

Whimsy - is there any function or way to make s...

is there any function or way to make schema fully optional, like literally every property, every nested lazy model? this does work, but is it like correct, is there anything seriously wrong with it or

export function deepPartialify(schema: z.ZodTypeAny): z.ZodTypeAny {
    if (schema instanceof ZodObject) {
        const newShape: z.ZodRawShape = {};

        for (const key in schema.shape) {
            const fieldSchema = schema.shape[key];
            newShape[key] = ZodOptional.create(deepPartialify(fieldSchema)) as typeof newShape[keyof typeof newShape];
        }

        return new ZodObject({ ...schema._def, shape: () => newShape });
    } else if (schema instanceof ZodArray) {
        return new ZodArray({ ...schema._def, type: deepPartialify(schema.element) });
    } else if (schema instanceof ZodOptional) {
        return ZodOptional.create(deepPartialify(schema.unwrap()));
    } else if (schema instanceof ZodNullable) {
        return ZodNullable.create(deepPartialify(schema.unwrap()));
    } else if (schema instanceof ZodTuple) {
        return ZodTuple.create(schema.items.map((item: z.ZodTypeAny) => deepPartialify(item)));
    } else if (schema instanceof z.ZodUnion) {
        return z.union(schema.options.map((option: z.ZodTypeAny) => deepPartialify(option)));
    } else if (schema instanceof ZodLazy) {
        return ZodLazy.create(() => deepPartialify(schema._def.getter()));
    } else {
        return schema;
    }
}

export function deepPartialify(schema: z.ZodTypeAny): z.ZodTypeAny {
    if (schema instanceof ZodObject) {
        const newShape: z.ZodRawShape = {};

        for (const key in schema.shape) {
            const fieldSchema = schema.shape[key];
            newShape[key] = ZodOptional.create(deepPartialify(fieldSchema)) as typeof newShape[keyof typeof newShape];
        }

        return new ZodObject({ ...schema._def, shape: () => newShape });
    } else if (schema instanceof ZodArray) {
        return new ZodArray({ ...schema._def, type: deepPartialify(schema.element) });
    } else if (schema instanceof ZodOptional) {
        return ZodOptional.create(deepPartialify(schema.unwrap()));
    } else if (schema instanceof ZodNullable) {
        return ZodNullable.create(deepPartialify(schema.unwrap()));
    } else if (schema instanceof ZodTuple) {
        return ZodTuple.create(schema.items.map((item: z.ZodTypeAny) => deepPartialify(item)));
    } else if (schema instanceof z.ZodUnion) {
        return z.union(schema.options.map((option: z.ZodTypeAny) => deepPartialify(option)));
    } else if (schema instanceof ZodLazy) {
        return ZodLazy.create(() => deepPartialify(schema._def.getter()));
    } else {
        return schema;
    }
}

10 Replies

Scott Trinh•3mo ago

I think this is roughly the right approach (missing ZodDiscriminatedUnion, maybe others?)

WhimsyOP•3mo ago

and zodeffects class for .refine stuff

Unknown User•3mo ago

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Scott Trinh•3mo ago

I don't think deepPartial works on lazy schemas

Unknown User•3mo ago

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Scott Trinh•3mo ago

No prob! Here's the docs: https://zod.dev/?id=recursive-types

GitHub

TypeScript-first schema validation with static type inference

Unknown User•3mo ago

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Scott Trinh•3mo ago

Yeah, that's right. You can use it for anything you want (similar to z.custom which is undocumented), but the only good use case is recursive types.

Unknown User•3mo ago

Message Not Public

Scott Trinh•3mo ago

ahh, nice, that's newish, I think? Or maybe I couldn't find it last time I looked 😂

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Whimsy - is there any function or way to make s...