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¶

Import the necessary decorators:

import { validate } from 'class-validator';

Enable decorators in your tsconfig.json:

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

You're now ready to start using class-validator in your project! Continue to Basic Usage.