import * as i0 from '@angular/core';
import { InjectionToken, PipeTransform } from '@angular/core';

type DataAccessor<T> = (obj: T, key: string, context?: number | any) => any;
declare const DATA_ACCESSOR: InjectionToken<DataAccessor<any>>;
declare const defaultDataAccessor: DataAccessor<any>;
declare function provideDataAccessor<T>(useFactory?: () => DataAccessor<T>, { merge }?: {
    merge?: boolean;
}): {
    provide: InjectionToken<DataAccessor<any>>;
    useFactory: () => (obj: T, key: string, index?: number) => any;
};
declare function injectDataAccessor<T>(): DataAccessor<T>;
declare function injectParentDataAccessor<T>(): DataAccessor<T>;
declare class DataAccessorPipe<T> implements PipeTransform {
    protected dataAccessor: DataAccessor<unknown>;
    transform(data: T, key: string, index?: number): any;
    static ɵfac: i0.ɵɵFactoryDeclaration<DataAccessorPipe<any>, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<DataAccessorPipe<any>, "dataAccessor", true>;
}

export { DATA_ACCESSOR, DataAccessorPipe, defaultDataAccessor, injectDataAccessor, injectParentDataAccessor, provideDataAccessor };
export type { DataAccessor };