/**
 * When using SSR, only graph node ids should be generated (via
 * `generateNodeId`). It is okay for AtomSelector ids to be generated during
 * SSR, but id'd selectors won't be hydratable on the client since those ids are
 * not generated predictably (selectors shouldn't be hydrated anyway). Ecosystem
 * ids must be set manually.
 */
export declare class IdGenerator {
    idCounter: number;
    /**
     * Cache function and class instance references that get passed as params to
     * atoms or AtomSelectors. Map them to a unique, serializable id. Use a
     * WeakMap so we don't hold on to anything here
     */
    weakCache: WeakMap<any, string>;
    /**
     * Generate an id that is guaranteed to be unique in this ecosystem and
     * pretty-much-guaranteed to be unique globally.
     *
     * This method and `IdGenerator#now()` are the only methods in Zedux that
     * produce random values.
     *
     * Override these when testing to create reproducible graphs/dehydrations that
     * can be used easily in snapshot testing. See our setup in the Zedux repo at
     * `<repo root>/packages/react/test/utils/ecosystem.ts` for an example.
     */
    generateId: (prefix: string) => string;
    generateNodeId(): string;
    /**
     * Turn an array of anything into a predictable string. If any item is an atom
     * instance, it will be serialized as the instance's id. If
     * acceptComplexParams is true, map class instances and functions to a
     * consistent id for the reference.
     *
     * Note that recursive objects are not supported - they would add way too much
     * overhead here and are really just unnecessary.
     */
    hashParams(params: any[], acceptComplexParams?: boolean): string;
    /**
     * Generate a timestamp. Pass true to make it a high res timestamp if possible
     *
     * This method and `IdGenerator#generateId()` are the only methods in Zedux
     * that produce random values.
     *
     * Override these when testing to create reproducible graphs/dehydrations that
     * can be used easily in snapshot testing. See our setup in the Zedux repo at
     * `<repo root>/packages/react/test/utils/ecosystem.ts` for an example.
     */
    now(highRes?: boolean): number;
    private cacheClass;
    private cacheFn;
}