/**
 * Dynamically generates and walks a tree in breadth-first order
 * This tree produces all possible pathways, and will revisit nodes, but not among its own unique pathway
 *
 * @category BreadthFirst
 * @param getNextStates - a function to generate list of neighboring states given the current state
 * @param forest - top level "forest" of states to begin traversal from
 */
export declare const generateBreadthFirstTreeTraversal: <T>(getNextStates: (state: T) => T[], forest: T[]) => Generator<{
    path: T[];
    state: T;
}>;
/**
 * Generator function that lazily iterates through each visit of a breadth-first search.
 * If you want just the found path to the solution, use `breadthFirstSearch`
 *
 * Each yield is an object `{ path: T[]; state: T }`
 * * `state` is the current state being visited
 * * `path` is, including current state, the in order steps it took to get to that state
 * * states are never re-visited
 *
 * @category BreadthFirst
 * @param getNextStates - a function to generate list of neighboring states given the current state
 * @param initial - initial state
 */
export declare const generateBreadthFirstSearch: <T>(getNextStates: (state: T) => T[], initial: T) => Generator<{
    path: T[];
    state: T;
}>;
/**
 * Performs a breadth-first-search (bfs) over a set of states starting from an `initial`
 * Returns a `{ path: T[]; state: T }` when solution found, `undefined` otherwise
 *
 * @category BreadthFirst
 * @param getNextStates - a function to generate list of neighboring states given the current state
 * @param determineIfFound - a function to determine if solution found
 * @param initial - initial state
 */
export declare const breadthFirstSearch: <T>(getNextStates: (state: T) => T[], determineIfFound: (state: T) => boolean, initial: T) => {
    path: T[];
    state: T;
} | undefined;