import { KeyValuePair } from "../types/Common";
/**
 *  parse [{key:"row_count",value:4}] to {row_count:4}
 * @param data key value pair array
 * @param keys all keys in data
 * @returns {key:value}
 */
export declare const formatKeyValueData: (data: KeyValuePair[], keys: string[]) => {
    [x: string]: any;
};
/**
 * parse {row_count:4} to [{key:"row_count",value:"4"}]
 * @param data Object
 * @return {KeyValuePair[]}
 */
export declare const parseToKeyValue: (data?: {
    [x: string]: any;
} | undefined) => KeyValuePair[];
/**
 *
 * @param number Number like 3.1738998889923096
 * @param precision The precision you want, if is 3 will return 3.173 and If is 2 will return 3.17
 * @returns
 */
export declare const formatNumberPrecision: (number: number, precision: number) => number;
/**
 * Convert a hybrid timestamp to UNIX Epoch time ignoring the logic part.
 *
 * @param data
 *  | Property          | Type   |           Description              |
 *  | :---------------- | :----  | :-------------------------------  |
 *  | hybridts          | String or BigInt |    The known hybrid timestamp to convert to UNIX Epoch time. Non-negative interger range from 0 to 18446744073709551615.       |
 *
 *
 *
 * @return
 *  | Property    |           Description              |
 *  | :-----------| :-------------------------------  |
 *  | unixtime as string      |  The Unix Epoch time is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT). |
 *
 *
 * #### Example
 *
 * ```
 *   const res = hybridtsToUnixtime("429642767925248000");
 * ```
 */
export declare const hybridtsToUnixtime: (hybridts: bigint | string) => string;
/**
 * Generate a hybrid timestamp based on Unix Epoch time, timedelta and incremental time internval.
 *
 * @param data
 *  | Property          | Type   |           Description              |
 *  | :---------------- | :----  | :-------------------------------  |
 *  | unixtime          | string or bigint |    The known Unix Epoch time used to generate a hybrid timestamp.  The Unix Epoch time is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT).       |
 *
 *
 *
 * @return
 *  | Property    | Type   |           Description              |
 *  | :-----------| :---   | :-------------------------------  |
 *  | Hybrid timetamp       | String   | Hybrid timetamp is a non-negative interger range from 0 to 18446744073709551615. |
 *
 *
 * #### Example
 *
 * ```
 *   const res = unixtimeToHybridts("429642767925248000");
 * ```
 */
export declare const unixtimeToHybridts: (unixtime: bigint | string) => string;
/**
 * Generate a hybrid timestamp based on datetime。
 *
 * @param data
 *  | Property          | Type   |           Description              |
 *  | :---------------- | :----  | :-------------------------------  |
 *  | datetime          | Date |    The known datetime used to generate a hybrid timestamp.       |
 *
 *
 *
 * @return
 *  | Property    | Type   |           Description              |
 *  | :-----------| :---   | :-------------------------------  |
 *  | Hybrid timetamp       | String   | Hybrid timetamp is a non-negative interger range from 0 to 18446744073709551615. |
 *
 *
 * #### Example
 *
 * ```
 *   const res = datetimeToHybrids("429642767925248000");
 * ```
 */
export declare const datetimeToHybrids: (datetime: Date) => string;
export declare const stringToBase64: (str: string) => string;