import * as i0 from "@angular/core";
/**
 * @TailwindNG Z-Index Seed
 * @returns The z-index seed value. Default is 50.
 */
export declare const Z_INDEX_SEED: import("@angular/core").InjectionToken<number>;
/**
 * @TailwindNG ZIndexer - A lightweight z-index service.
 * - Provides a unique z-index value on each call to `next`.
 * - The first z-index value is provided by the `Z_INDEX_SEED` injection token.
 * - The seed value can be overridden by providing a new value. default is 50.
 * @Example
 * ```ts
 *  providers: [ { provide: Z_INDEX_SEED, useValue: 100 }, ZIndexer ]
 * ```
 * @returns The z-index value
 */
export declare class ZIndexer {
    private zIndex;
    get next(): number;
    get current(): number;
    static ɵfac: i0.ɵɵFactoryDeclaration<ZIndexer, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ZIndexer>;
}