Generates deeply cloned definitions of Zod schemas.

Available as a npm package:

npm install --save-dev zod-clone

Given Zod schemas, creates a string containing a verbose redefinition of the given schema. Useful for getting rid of dependencies when exporting inferred schemas.

One can get the definition directly using cloneZodSchema() directly, or by adding all the schemas to be cloned to a ZodCloneStore, then writing them to an output file for later use. For instance, take this integration using drizzle-orm and drizzle-zod:

import { pgTable, uuid, text, timestamp } from "drizzle-orm/pg-core";
import { createSelectSchema } from "drizzle-zod";
import { ZodCloneStore, cloneZodSchema } from "zod-clone";

const cloneStore = new ZodCloneStore();

const table = pgTable("table", {
    id: uuid('id').primaryKey().defaultRandom(),
    name: text('name').notNull(),
    timestamp: timestamp('timestamp').notNull().defaultNow(),
});

const schema = cloneStore.add('schema', createSelectSchema(table));

cloneStore.clone('./generated.ts');

// Same output as the generated .ts file, but only for a single schema
console.log(cloneZodSchema('schema', schema));

The generated file generated.ts will contain:

import { z } from "zod";

export const schema = z.object({
    id: new z.ZodString({ checks: [{ kind: "uuid" }], typeName: z.ZodFirstPartyTypeKind.ZodString, coerce: false }),
    name: new z.ZodString({ checks: [], typeName: z.ZodFirstPartyTypeKind.ZodString, coerce: false }),
    timestamp: new z.ZodDate({ checks: [], coerce: false, typeName: z.ZodFirstPartyTypeKind.ZodDate }),
});

Note that the generated file no longer depends on drizzle-orm or drizzle-zod, but contains all the inferred logic.

Made by Marko Calasan, 2023.

This product is licensed under the MIT License.