/** Boot steps that can fail before the first sync. */
export type ChatBootFailedStep = "engine" | "connect";
/** A fresh device pulls everything ("reinstall"); a kept local copy only catches up ("incremental"). */
export type ChatBootSyncKind = "reinstall" | "incremental";
/** Progress a fresh-device sync reports once groups and conversations are stored, before any message. */
export declare const CONVERSATIONS_SYNCED_PROGRESS = 10;
interface BootStore {
    /** User the current boot belongs to; logging in as someone else starts over. */
    userID: string | null;
    hasConnected: boolean;
    /** Set by the first OnSyncServerFinish/Failed after login, or when we stop waiting on a stalled sync. */
    isFirstSyncDone: boolean;
    /** The first sync was released by the stall timer, not finished; a real finish clears it. */
    isSyncStalled: boolean;
    /** A conversation list load finished after the first sync, so an empty list really is empty. */
    isListSettled: boolean;
    failedStep: ChatBootFailedStep | null;
    /** 0-100 from OnSyncServerProgress (only sent while a fresh device syncs). */
    syncProgress: number;
    /** Kind of the first sync after login while it runs; cleared once it finishes or fails. */
    firstSyncKind: ChatBootSyncKind | null;
    /** The desk's first page of conversations has its rows and previews. */
    isFirstScreenReady: boolean;
    startBoot: (userID: string) => void;
    reset: () => void;
    markConnecting: () => void;
    markConnected: () => void;
    markFailed: (step: ChatBootFailedStep) => void;
    markSyncStarted: (isReinstall: boolean) => void;
    setSyncProgress: (progress: number) => void;
    markFirstSyncDone: () => void;
    markSyncStalled: () => void;
    markListSettled: () => void;
    markFirstScreenReady: () => void;
}
type BootSyncState = Pick<BootStore, "isFirstSyncDone" | "firstSyncKind" | "syncProgress">;
/** A fresh device's first sync has stored the conversations and is still pulling each one's latest message. */
export declare const selectIsSyncingInBackground: (state: BootSyncState) => boolean;
/** The local DB holds the conversations: the first sync ended, only catches up, or runs in the background. */
export declare const selectHasConversations: (state: BootSyncState) => boolean;
/** Progress of the chat engine boot (WASM, login, connect, first sync) shared by the loading screens. */
declare const useBootStore: import("zustand").UseBoundStore<import("zustand").StoreApi<BootStore>>;
export default useBootStore;
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