/**
 * Store-backed default {@link CoordinationProvider}.
 *
 * Maps the five coordination-port methods onto today's `_meta/schema-fence`
 * store ops so that, with no `by-*` provider injected, the fence service
 * reproduces its current store-polling behavior byte-for-byte. The `observe*`
 * methods are poll-emit (the legacy {@link FenceWatcher} model); `by-tabs` /
 * `by-peer` override them with real-time push.
 *
 * @module
 */
import type { NoydbStore } from '../../kernel/types.js';
import type { Unsubscribe } from '../../port/with/write-hooks.js';
import type { CoordinationProvider, FenceState, WriterPresence } from '../../port/by/types.js';
export declare class StoreCoordinationProvider implements CoordinationProvider {
    #private;
    constructor(store: NoydbStore, opts?: {
        pollIntervalMs?: number;
    });
    setFence(vault: string, fence: FenceState): Promise<void>;
    readFence(vault: string): Promise<FenceState>;
    observeFence(vault: string, onChange: (f: FenceState) => void): Unsubscribe;
    reportPresence(vault: string, p: WriterPresence): Promise<void>;
    observePresence(vault: string, onChange: (writers: readonly WriterPresence[]) => void): Unsubscribe;
    reachableWriters(vault: string, o: {
        staleMs: number;
        now: number;
    }): Promise<readonly WriterPresence[]>;
}