export declare const ISSUE_ID_MIN = 100000;
export declare const ISSUE_ID_MAX = 999999;
export declare function isIssueId(value: string): boolean;
/**
 * A six-digit id no one else in this project holds.
 *
 * `rng` is injectable so a test can force a collision; production passes
 * nothing and gets Math.random, which is the right tool for a name that needs
 * to be distinct rather than unguessable.
 */
export declare function mintIssueId(taken: ReadonlySet<string>, rng?: () => number): string;