type ErrorHandler = null | ((x: string) => void);
/**
 * Validates space separated string against an array of accepted values.
 * @param {String} propValue -- Space separated string (provided by the user)
 * @param {Array} validArr -- Array of values that are considered "valid"
 * @param {Boolean} responsive -- Enables validation of validArr values with '@sm', '@md', '@lg' added to them
 * @param {Function} handler -- Allows for handling any errors
 */
declare function validateProp(propValue: string, validArr: string[], responsive?: boolean, handler?: ErrorHandler): boolean;
export default validateProp;