/**
 * Returns the string representation of a value.
 *
 * @param value - a value
 * @param seen - the objects that we've seen before
 * @returns the string representation of the value
 */
type StringMapper = (value: unknown, seen?: Set<unknown>) => string;
/**
 * @param value - a value
 * @returns true if the value has the number of parameters expected by `StringMapper`
 */
declare function isStringMapper(value: unknown): value is StringMapper;
/**
 * Uses {@link internalValueToString} to convert objects to a string.
 */
declare const INTERNAL_VALUE_TO_STRING: (value: unknown) => string;
export { type StringMapper, isStringMapper, INTERNAL_VALUE_TO_STRING };