import { Options } from './options';
/**
 * Result of object-hash hashing function
 */
type HashedObject = string;
/**
 * Type for normalized input.
 */
export type Normalized<T> = HashedObject | T;
/**
 * Class that normalizes object types to strings via hashing
 */
export declare class Normalizer<K, V, TxK, TxV> {
    private readonly objectHashOptions;
    private readonly caseInsensitive;
    private readonly keyTransformer;
    private readonly valueTransformer;
    private readonly optionsChecksum;
    constructor(options?: Options<K, V, TxK, TxV>);
    /**
     * @returns the checksum for the options passed to this Normalizer
     */
    getOptionsChecksum(): string;
    /**
     * Normalize the input by transforming and then hashing the result (if an object)
     * @param input the input to normalize
     * @returns the normalized result
     */
    normalizeKey(input: K): Normalized<TxK>;
    /**
     * Normalize the input by transforming and then hashing the result (if an object)
     * @param input the input to normalize
     * @returns the normalized result
     */
    normalizeValue(input: V): Normalized<TxV>;
    private normalizeHelper;
    /**
     * Returns true if the input is a javascript object.
     */
    private static isObject;
}
export {};