interface ServerTiming {
    /** The name attribute is required, and gives a short name to the server-specified metric. */
    name: string;
    /** (Optional) The duration attribute is a double (like `0.0`) that contains the server-specified metric duration. Usually milliseconds. */
    duration?: number;
    /** (Optional) The description describes the server-specified metric. */
    description?: string;
}
declare type ServerTimings = Array<ServerTiming>;
/**
 * Parse a given [`Server-Timing`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Server-Timing) header string value into corresponding timing components.
 *
 * @example
 * ```
 * parse('missedCache')
 * // [{ name: "missedCache" }]
 * parse('cpu;dur=2.4')
 * // [{ name: "cpu", duration: 2.4 }]
 * parse('cache;desc="Cache Read";dur=23.2')
 * // [{ name: "cache", description: "Cache Read", duration: 23.2 }]
 * parse('db;dur=53, app;dur=47.2')
 * // [{ name: "db", duration: 53 }, { name: "app", duration: 47.2 }]
 * ```
 * @param timingHeader Header value (as string) to parse.
 * @returns {ServerTimings} Timing components as an object.
 */
declare const parse: (timingHeader: string) => ServerTimings;
/**
 * Stringify a given {@link ServerTimings} object into a [`Server-Timing`](https://www.w3.org/TR/server-timing/#the-server-timing-header-field) header string value.
 *
 * @example
 * ```
 * stringify([{ name: "missedCache" }])
 * // missedCache
 * stringify([{ name: "cpu", duration: 2.4 }])
 * // cpu;dur=2.4
 * stringify([{ name: "cache", description: "Cache Read", duration: 23.2 }])
 * // cache;desc="Cache Read";dur=23.2
 * stringify([{ name: "db", duration: 53 }, { name: "app", duration: 47.2 }])
 * // db;dur=53, app;dur=47.2
 * ```
 * @param {ServerTimings} timings Timings object to stringify.
 * @returns Server-Timings header value as string.
 */
declare const stringify: (timings: ServerTimings) => string;

export { ServerTimings, parse, stringify };