import { SrcOptions } from 'vinyl-fs';
import { ITransform } from './ITransform';
import { Src, Expression, ExpressionType } from '@taskfr/core';
import { IPipeConfigure } from './IPipeConfigure';
import { PipeActivity } from './PipeActivity';
import { InjectPipeActivityToken } from './IPipeActivity';
export declare const SourceAcitvityToken: InjectPipeActivityToken<SourceActivity>;
/**
 * source pipe configure.
 *
 * @export
 * @interface IPipeSourceConfigure
 * @extends {IPipeConfigure}
 */
export interface SourceConfigure extends IPipeConfigure {
    /**
     * transform source.
     *
     * @type {TransformSource}
     * @memberof IPipeConfigure
     */
    src: ExpressionType<Src>;
    /**
     * src options.
     *
     * @type {CtxType<SrcOptions>}
     * @memberof IPipeConfigure
     */
    srcOptions?: ExpressionType<SrcOptions>;
}
export declare class SourceActivity extends PipeActivity {
    /**
     * source
     *
     * @type {TransformSource}
     * @memberof IPipeSource
     */
    src: Expression<Src>;
    /**
     * source options.
     *
     * @type {SrcOptions}
     * @memberof PipeSource
     */
    srcOptions: Expression<SrcOptions>;
    onActivityInit(config: SourceConfigure): Promise<void>;
    protected merge(...data: ITransform[]): Promise<ITransform>;
    source(source: Src, srcOptions: SrcOptions): ITransform;
    static classAnnations: any;
}