@nemesisjs/validation

The official, flexible validation module for the NemesisJS ecosystem.

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It provides a consistent interface to integrate popular validation libraries seamlessly into your controllers and routes.

Features

• Flexible and unopinionated validation layer.
• Works out-of-the-box with @nemesisjs/core routing decorators.
• Supports multiple validation strategies.

Supported Libraries

Currently, the following validation libraries are compatible via peer dependencies:

• Zod
• Valibot
• class-validator / class-transformer

Installation

You can install this package alongside your preferred validation library via your package manager:

# Using bun
bun add @nemesisjs/validation zod

Usage

You can use the validation primitives in your NemesisJS controllers to automatically validate incoming request bodies, queries, or parameters.

import { Controller, Post, Body } from '@nemesisjs/core';
import { Validate } from '@nemesisjs/validation';
import { z } from 'zod';

const CreateUserSchema = z.object({
  name: z.string(),
  email: z.string().email(),
  password: z.string().min(8)
});

@Controller('/users')
export class UserController {
  @Post()
  @Validate({ body: CreateUserSchema })
  create(@Body() body: any) {
    // The body structure is guaranteed to match the CreateUserSchema
    return { success: true, data: body };
  }
}

License

MIT