If the IsNotEmpty verification fails, would like to skip the other verifications.

[onozaty]

import { IsEmail, IsNotEmpty } from 'class-validator';

export class CreateUserDto {
  @IsNotEmpty()
  @IsEmail()
  email: string;
}

If an empty string is specified for email, both @IsNotEmpty and @IsEmail validation will fail.
Two messages are generated.

• email must be an email
• email should not be empty

I want to skip IsEmail validation in these cases, since it is sufficient to just tell the user that it is empty.

I know that this can be achieved by creating a Custom validation decorator that performs the same checks as IsEmail only if it is non-empty.

If there is another, simpler solution, I would like to know.

Thanks.

[sunnypatell]

@onozaty use the stopAtFirstError option when calling validate(). this stops validation on each property after the first constraint fails, so if @IsNotEmpty already caught the empty string, @IsEmail won't run:

const errors = await validate(dto, { stopAtFirstError: true });

in NestJS, pass it to ValidationPipe:

app.useGlobalPipes(new ValidationPipe({ stopAtFirstError: true }));

this is a built-in option in class-validator v0.14+. make sure your decorators are ordered the way you want (first decorator = first check).

ref: class-validator validate options

[onozaty]

Thank you very much.