gel-zod

gel-zod is a code generator for Zod schemas from your EdgeDB database schema.

2 types of schemas will be generated:

• Create: All properties excluding link properties
• Update: All properties excluding link and readonly properties

CLI

To run the CLI: npx gel-zod [options] or pnpm exec gel-zod

Currently the supported options are:

• --outputDir: The output directory relative from your gel.toml
• --target ts|mts: If set to mts will include .js in import statements

Supported features

Feature	Status
Scalars	See table
Ranges	🔴
Arrays, tuples	🟢
Union types	🔴
Abstract objects	🟢
Overloaded properties	🟢
Regex constraints	🟢
Min, max constraints	🔴
Custom validators	🔴
Property annotations	🔴

Supported Scalars

EdgeDB Type	Supported	Zod Type	Constraints
std::str	🟢	z.string()	-
std::bool	🟢	z.boolean()	-
std::json	🟢	z.unknown()	-
std::uuid	🟢	z.string().uuid()	-
std::enum	🟢	z.enum()	-
std::int16	🟢	z.number().int().min(-32768).max(32768)	16-bit unsigned integer
std::int32	🟢	z.number().int().min(-2147483647).max(2147483647)	32-bit unsigned integer
std::int64	🟢	z.bigint().min(-9223372036854775808n).max(9223372036854775807n)	64-bit unsigned integer
std::bigint	🟢	z.bigint()	-
std::float32	🟢	z.number().min(-3.40282347e38).max(3.40282347e38)	32-bit float
std::float64	🟢	z.number()	64-bit float
std::datetime	🟢	z.string().datetime({ offset: true })	ISO datetime with timezone
std::duration	🟢	z.string().duration()	ISO duration format
cal::local_datetime	🟢	z.string().datetime({ local: true })	Local datetime without timezone
cal::local_date	🔴	-	-
cal::local_time	🟢	z.string().time()	Local time format
cal::relative_duration	🔴	-	-
cal::date_duration	🔴	-	-
std::bytes	🔴	-	-
std::sequence	🔴	-	-

Are we missing any? Please open an issue or PR.

Example output

Partial output of /dbschema/zod/modules/default.ts:

// #region default::User
export const CreateUserSchema = z.
  object({ // default::HasTimestamps
    createdAt: z.iso.datetime().optional(), // std::datetime
    updatedAt: z.iso.datetime().optional(), // std::datetime
  })
  .extend({ // default::User
    name: z.string(), // std::str
    emailAddress: z.string().regex(/^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/), // std::str
    password: z.string(), // std::str
  });

export const UpdateUserSchema = z.
  object({ // default::HasTimestamps
    updatedAt: z.iso.datetime().optional(), // std::datetime
  })
  .extend({ // default::User
    name: z.string(), // std::str
    emailAddress: z.string().regex(/^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/), // std::str
    password: z.string(), // std::str
  });
// #endregion