rufus-validation

Woof Woof Woof. (Translation: Decorator based validation)

Rufus can validate an object, making sure that all fields are correctly typed at runtime and also validating on user options such as making a field required or matching a certain pattern.

Usage

Make sure you have expecimentalDecorators and emitDecoratorMetadata enabled in your tsconfig.json.

Install the library from npm...

npm install rufus-validation --save

Add a validation decorator to any property you want to be validated.

e.g.

class ExampleRequest {
    @Validate()
    public standard: string;

    @Validate({
        required: true
    })
    public standardWithOptions: string;

    @Required()
    public mandatoryValue: number;

    @Required(false)
    public optionalProperty: string;
}

Then you can test that the object contains valid data by using a validate method.

e.g.

let data = new ExampleRequest();
data.standard = 'value';
data.standardWithOptions = true;

let errors = Validator.validate(data);

In this example, errors would contain...

[
    {
        field: 'standardWithOptions',
        message: 'is not of type string',
        value: true
    },
    {
        field: 'mandatoryValue',
        message: 'is a required field'
    }
]