getting-started

name	getting-started
description	Custom class-validator decorators for NestJS DTOs. Use when validating optional, nullable or conditional values.

Import

import { IsUndefinable, IsNullable, } from '@wisemen/validators'

Common validators

Optional fields

export class CreateUserCommand {
  @IsString()
  @IsUndefinable()
  middleName?: string
}

Nullable fields

export class UpdateUserCommand {
  @IsString()
  @IsNullable()
  bio: string | null
}

Conditional validation

export class PaymentDto {
  @IsString()
  type: string

  @IsNullWhen('type', (type) => type !== 'bank_transfer')
  @IsString()
  iban: string | null
}

Available validators

• IsUndefinable - Skip validation when undefined
• IsNullable - Skip validation when null
• IsNullableWhen - Conditional nullable
• IsNullWhen - Must be null when condition
• IsDateWithoutTimeString - Date format YYYY-MM-DD, deprecated: use @wisemen/datewise
• IsTimeString - Time format HH:mm:ss, deprecated: use @wisemen/datewise
• IsShortTimeString - Time format HH:mm, deprecated: use @wisemen/datewise
• IsMoneyString - Money format validation
• IsAfterDateString - Date after another date
• IsBeforeDateString - Date before another date
• IsSameOrAfterDateString - Date same or after
• IsSameOrBeforeDateString - Date same or before
• IsAfterTodayString - Date after today
• IsBeforeTodayString - Date before today
• IsAfterDateTimeString - DateTime comparisons
• IsBeforeDateTimeString - DateTime comparisons
• IsSameOrAfterDateTimeString - DateTime comparisons
• IsSameOrBeforeDateTimeString - DateTime comparisons
• IsAfterTimeString - Time after another time
• IsQueryBoolean - Parse query boolean
• StartsWith - String starts with value
• IsRrn - Belgian RRN validation
• IsPluxeeCustomerId - Pluxee customer ID