Installation

Requirements

• npm version 6 or higher
• Node.js

Installing the Package

npm install class-validator --save

Note

It's important to use at least npm@6 when using class-validator. From npm@6 the dependency tree is flattened, which is required by class-validator to function properly.

Basic Setup

1. Import the necessary decorators:

import { validate } from 'class-validator';

1. Enable decorators in your tsconfig.json:

{
    "compilerOptions": {
        "experimentalDecorators": true
    }
}

You're now ready to start using class-validator in your project!