import { Index } from '../typings';
export declare const parsePGOptions: (url: string) => Record<string, any>;
export declare const key: (namespace: string, k: string) => string;
export declare const keyForIndex: (namespace: string, idx: Index) => string;
export declare const keyDigest: (k: string) => string;
export declare const keyFromParts: (...parts: string[]) => string;
export declare const sleep: (ms: number) => Promise<void>;
export declare const normalizeOffsetAndLimit: ({ pageLimit, pageOffset, maxLimit, }: {
    pageOffset?: number;
    pageLimit?: number;
    maxLimit: number;
}) => {
    offset: number;
    limit: number;
};
export declare const indexPrefix = "_index";
export declare const createdAtPrefix = "_createdAt";