/**
 * A prefix tree used for scanning alphabetic text without zi separators.
 */
export declare class PropTrie<O extends {
    [k in P]: string;
}, P extends string | number | symbol> {
    readonly root: TrieNode<O>;
    /**
     * @param items Elements to insert into the tree.
     * @param prop The property on the elements to index on.
     */
    constructor(items: readonly O[], prop: P);
    search(str: string): Generator<O, void, unknown>;
}
export interface TrieNodeMixin<O> {
    [s: `_${string}`]: TrieNode<O>;
}
export type TrieNode<O> = Array<O> & TrieNodeMixin<O>;