import { AdjacencyFunc, LinkFunc, WeightFunc } from "../definitions.js";
import { PriorityQueue } from "../PriorityQueue.js";
export interface PrimTieBreaker {
    start(): void;
    nextNode(): void;
    next(): number;
}
/**
 * Prioritize nodes that were opened last, but shuffle edges within that node.
 * Produces windy mazes with high river, like the recursive backtracker.
 */
export declare const PRIM_LAST_ADDED_RANDOM_EDGES: PrimTieBreaker;
/**
 * Prioritize edges that were opened last.
 * Produces a very regular effect. No randomness at all.
 * Relies more on the weight function to do something interesting.
 */
export declare const PRIM_LAST_ADDED: PrimTieBreaker;
/**
 * Prioritize edges completely randomly.
 * Produces low-river mazes with lots of branches and lots of short dead-ends.
 */
export declare const PRIM_RANDOM: PrimTieBreaker;
type EdgeType<N, E> = {
    src: N;
    dir: E;
    dest: N;
    weight: number;
    tiebreaker: number;
};
export declare class PrimIter<N, E> implements IterableIterator<void> {
    collectedNodes: Set<N>;
    edgeQueue: PriorityQueue<EdgeType<N, E>>;
    tiebreaker: PrimTieBreaker;
    getWeight: WeightFunc<N, E>;
    getAdjacent: AdjacencyFunc<N, E>;
    linkNodes: LinkFunc<N, E>;
    constructor(startNode: N, getAdjacent: AdjacencyFunc<N, E>, linkNodes: LinkFunc<N, E>, { getWeight, tiebreaker }?: {
        getWeight?: WeightFunc<N, E>;
        tiebreaker?: PrimTieBreaker;
    });
    collectNode(node: N): void;
    canLinkTo(destNode: N): boolean;
    next(): IteratorResult<void>;
    [Symbol.iterator](): this;
}
export declare function prim<N, E>(startNode: N, getAdjacent: AdjacencyFunc<N, E>, linkNodes: LinkFunc<N, E>, { maxIterations, getWeight, tiebreaker }?: {
    maxIterations?: number;
    getWeight?: WeightFunc<N, E>;
    tiebreaker?: PrimTieBreaker;
}): void;
export {};