/**
 * ONE pending-approvals poller per client.
 *
 * Every surface that shows the attention count reads the same asks: the
 * launcher badge, the center's "Needs you" rail, the toast feed. Each of those used to hold its OWN `useResource`, so a host mounting
 * both the overlay and the center ran three or four independent `GET /approvals`
 * intervals forever — 36 requests a minute with nothing waiting.
 *
 * This is the same shape as the run-activity store: a module singleton per
 * client, N subscribers, one request. The cadence is the FASTEST any subscriber
 * asked for (a surface that wants 5s still gets 5s), polling pauses while the
 * document is hidden, and the last unsubscribe stops it entirely.
 */
import type { ApprovalRequest } from "../../core/index.js";
import type { VendoClient } from "../client.js";
import { type IdentityState } from "./identity-state.js";
export interface ApprovalsSnapshot {
    data: ApprovalRequest[];
    error: Error | undefined;
    isLoading: boolean;
}
/** Stable first-render / SSR snapshot (useSyncExternalStore compares identity). */
export declare const APPROVALS_LOADING: ApprovalsSnapshot;
declare class ApprovalsFeed {
    private readonly list;
    /** The per-client forbidden latch (H2-E / #1372): a signed-out visitor's
     *  feed goes quiet after the first refusal instead of retrying forever,
     *  and wakes on the page's identity signal like every other poller. */
    private readonly identity;
    private snapshot;
    /** Subscriber → the cadence it asked for (0 = read-only, no polling). */
    private readonly cadences;
    private timer;
    private generation;
    private stopIdentity;
    constructor(list: () => Promise<ApprovalRequest[]>, 
    /** The per-client forbidden latch (H2-E / #1372): a signed-out visitor's
     *  feed goes quiet after the first refusal instead of retrying forever,
     *  and wakes on the page's identity signal like every other poller. */
    identity: IdentityState);
    read: () => ApprovalsSnapshot;
    subscribe: (listener: () => void, pollMs: number) => (() => void);
    refresh: () => Promise<void>;
    private publish;
    private arm;
    private stop;
    /** The fastest cadence anybody asked for; undefined = nobody polls. */
    private cadence;
    private onVisibility;
}
export declare function approvalsFeed(client: VendoClient): ApprovalsFeed;
export type { ApprovalsFeed };