typia VS zod

However, lacking of typia and nestia libraries is obvious. If you also need detailed Swagger/OpenAPI spec like me, but you need more detailed types/properties, or found something missed, please take a contribution.

Therefore, I've implemented the Protocol Buffer features for two months, and introduce you. From now on, you can easily use Protocol Buffer features in typia, with pure TypeScript type. You no more need to define extra schema even including *.proto file. typia will do everything for you. It will analyze your TypeScript type, and generate Protocol Buffer schema and de/serializers automatically.

I've written some articles introducing my TypeScript runtime validator library typia in here dev.to community. In these previous articles, I had often explained that typia boosts up validation spped through AoT (Ahead of Time) compliation, and it is maximum 20,000x faster than class-validator.

typia: https://github.com/samchon/typia

If you see actual Mockup Simulator code, then you may exactly understand what it is. Yes, the Mockup Simulator, it's just an internal function returning random data with same type of API interface. For reference, mockup data generation is being done by typia.random() function, which can analyze TypeScript type and generate optimal random generation code in the compliation level.

typia is a super-easy and fast runtime validator library, which needs TypeScript type only. It does not need extra schema definition like ajv or class-validator. It can analyze TypeScript by itself, and generates optmial validation code for each type.

Guide Documents: https://typia.io

Zod is an open-source schema declaration and validation library that emphasizes TypeScript. It can refer to any data type, from simple to complex. Zod eliminates duplicative type declarations by inferring static TypeScript types and allows easy composition of complex data structures from simpler ones. It has no dependencies, is compatible with Node.js and modern browsers, and has a concise, chainable interface. Zod is lightweight (8kb when zipped), immutable, with methods returning new instances. It encourages parsing over validation and is not limited to TypeScript but works well with JavaScript as well.

Zod is a TypeScript-first schema declaration and validation library. It helps create schemas for any data type and is very developer-friendly. Zod has the functional approach of "parse, don't validate." It supports coercion in all primitive types.

Link: https://zod.dev/

You can check out their documentation here.

You can learn more about Zod on their website here.

In JS, it's a good idea anyway to use some JSON parsing library instead of JSON.parse.

With Zod, you can use z.bigint() parser. If you take the "parse any JSON" snippet https://zod.dev/?id=json-type and change z.number() to z.bigint(), it should do what you are looking for.

We will validate our input using client-side zod. Zod handles TypeScript-first schema validation with static type inference. This means that it will not only validate your fields, it will also set types on validated fields.

A word of warning: while discriminated unions are very powerful, there's an ongoing discussion on whether discriminated unions should be deprecated and replaced with a different API.

I was first introduced to Zod by Adam Bobrow - a colleague of mine and a dear friend. Adam was sick and tired from JavaScript's brittleness, and about two years ago he started migrating our code base to TypeScript. But that wasn't enough for him. He kept complaining: "What good are my types, if some other service decides to send me bad data and breaks my code?". That's when he discovered Zod.