text: //noinspection JSUnusedGlobalSymbols
  /**
   * Checks if value is null
   * @constructor
   * @author dev.ymalcev@gmail.com
   */
  export default function SymfonyComponentValidatorConstraintsIsNull() {
      this.message = '';
  
      this.validate = function(value) {
          var errors = [];
          if (null !== value) {
              errors.push(this.message.replace('{{ value }}', FpJsBaseConstraint.formatValue(value)));
          }
  
          return errors;
      }
  }
  
  window.SymfonyComponentValidatorConstraintsIsNull = SymfonyComponentValidatorConstraintsIsNull;
  window.SymfonyComponentValidatorConstraintsNull = SymfonyComponentValidatorConstraintsIsNull;