adam-acs/app/exceptions/index.ts

import { Exception } from '@adonisjs/core/exceptions'

export class NotFoundException extends Exception {
  static status = 404
  static code = 'E_NOT_FOUND'
}

export class BadRequestException extends Exception {
  static status = 400
  static code = 'E_BAD_REQUEST'
}

export class UnprocessableEntityException extends Exception {
  static status = 422
  static code = 'E_UNPROCESSABLE'
}

export class DatabaseException extends Exception {
  static status = 503
  static code = 'E_DATABASE_ERROR'
}