import type { Stream, Streamable } from '@rimbu/stream';
import type { GraphBase, GraphElement } from '../../common/index.cjs';
export interface EdgeGraphBase<N, Tp extends EdgeGraphBase.Types = EdgeGraphBase.Types> extends GraphBase<N, Tp> {
    /**
     * Returns false since this is an arrow (directed) graph instance.
     */
    readonly isDirected: false;
}
export declare namespace EdgeGraphBase {
    interface NonEmpty<N, Tp extends EdgeGraphBase.Types = EdgeGraphBase.Types> extends GraphBase.NonEmpty<N, Tp>, Omit<EdgeGraphBase<N, Tp>, keyof GraphBase.NonEmpty<any, any>>, Streamable.NonEmpty<GraphElement<N>> {
        /**
         * Returns a non-empty `Stream` containing all graph elements of this collection as single tuples for isolated nodes
         * and 2-valued tuples of nodes for connections.
         * @example
         * ```ts
         * EdgeGraphHashed.of([1], [2, 3]).stream().toArray()  // => [[1], [2, 3]]
         * ```
         */
        stream(): Stream.NonEmpty<GraphElement<N>>;
    }
    interface Builder<N, Tp extends EdgeGraphBase.Types = EdgeGraphBase.Types> extends GraphBase.Builder<N, Tp> {
    }
    interface Context<UN, Tp extends EdgeGraphBase.Types = EdgeGraphBase.Types> extends GraphBase.Context<UN, Tp> {
        readonly isDirected: false;
    }
    /**
     * Utility interface that provides higher-kinded types for this collection.
     */
    interface Types extends GraphBase.Types {
        readonly normal: EdgeGraphBase<this['_N']>;
        readonly nonEmpty: EdgeGraphBase.NonEmpty<this['_N']>;
        readonly context: EdgeGraphBase.Context<this['_N']>;
        readonly builder: EdgeGraphBase.Builder<this['_N']>;
    }
}