import type { ArkmeArkoModelCatalog } from '../types.js';
/** Memory only: a new renderer starts empty. Keys include environment and account. */
export declare class ArkoModelCache {
    private readonly now;
    private readonly entries;
    private readonly selections;
    private revision;
    readonly getRevision: () => number;
    isSelecting(key: string | undefined): boolean;
    private readonly listeners;
    constructor(now?: () => number);
    readonly subscribe: (listener: () => void) => () => void;
    get(key: string | undefined): ArkmeArkoModelCatalog | undefined;
    set(key: string, catalog: ArkmeArkoModelCatalog): void;
    clear(): void;
    select(key: string, fetch: () => Promise<ArkmeArkoModelCatalog>): Promise<ArkmeArkoModelCatalog>;
    load(key: string, fetch: () => Promise<ArkmeArkoModelCatalog>): Promise<void>;
    private publish;
}
export declare const arkoModelCache: ArkoModelCache;
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