text: 
  
  /**
   * Field is Required
   * 
   * @export
   * @param {any} value 
   * @returns 
   */
  export function required(value) { 
      return value == null || value === '' ? '*Required' : undefined;
  }
  
  
  /**
   * Accept Numbers Only
   * 
   * @export
   * @param {any} value
   * @returns
   */
  export function number(value) {
      return value && isNaN(Number(value)) ? 'Must be a number' : undefined;
  }