import type { Limits } from "./types.js";
/** Headroom between the guard's time limit and the process being killed. */
export declare const WALL_CLOCK_HEADROOM = 30000;
/** The largest `maxTime` a workflow or step may ask for: `run`'s wall clock
 *  ceiling less the headroom, so the wall clock never exceeds the ceiling. */
export declare const MAX_TIME: number;
/** How a limit must print to be an Agency number literal: digits and an
 *  optional fraction. `1e-7` and `1e+21`, which `0.0000001` and
 *  `1000000000000000000000` print as, do not parse. Parse refuses a limit
 *  that prints any other way, and the `limits` token check accepts only this. */
export declare const PLAIN_DECIMAL: RegExp;
export declare function wallClockFor(limits: Limits | null): number | null;