New Validator Decorator: @IsNotEmpty

[waji-io]

I have created a custom validator that others might find useful as well.
It covers the use case of a property not being empty, null or undefined.

export type ValidatorOptionType = {
    message?: string;
}

export const IsNotEmpty = ({ message = 'Property must not be empty' }: ValidatorOptionType = {}): PropertyDecorator =>
  createDecorator(
    (prop: unknown) => prop !== '' && prop !== null && prop !== undefined,
    { errorMessage: message, constraints: [] }
  );

Here is an example of how to use it:

@IsNotEmpty({ message: MSG_VALIDATION.required })
initials: string;