import { Type, TypeMetadata, ProviderMetadata } from '@tsdi/ioc';
import { IPipeTransform } from '../bindings/IPipeTransform';
/**
 * pipe decorator.
 */
export declare type PipeDecorator = <TFunction extends Type<IPipeTransform>>(target: TFunction) => TFunction | void;
/**
 * pipe metadata.
 *
 * @export
 * @interface IPipeMetadata
 * @extends {TypeMetadata}
 */
export interface IPipeMetadata extends TypeMetadata, ProviderMetadata {
    /**
     * name of pipe.
     */
    name: string;
    /**
     * If Pipe is pure (its output depends only on its input.)
     */
    prue?: boolean;
}
/**
 * Pipe decorator.
 *
 * @export
 * @interface IInjectableDecorator
 */
export interface IPipeDecorator {
    /**
     * Pipe decorator, define the class as pipe.
     *
     * @Pipe
     *
     * @param {IPipeMetadata} [metadata] metadata map.
     */
    (metadata?: IPipeMetadata): PipeDecorator;
    /**
     * Pipe decorator, define the class as pipe.
     *
     * @Pipe
     *
     * @param {string} selector metadata selector.
     */
    (name: string, prue?: boolean): PipeDecorator;
    /**
     * Pipe decorator, define the class as pipe.
     *
     * @Pipe
     */
    (target: Type): void;
}
/**
 * Pipe decorator, define for class. use to define the class. it can setting provider to some token, singleton or not. it will execute  [`PipeLifecycle`]
 *
 * @Pipe
 */
export declare const Pipe: IPipeDecorator;