import type { Lang } from '../types/index.js';
export declare function e(text: unknown): string;
export declare function fmtNum(n: number | undefined | null, digits?: number): string;
export declare function fmtDuration(ms: number | undefined | null): string;
export declare function fmtCost(usd: number | undefined | null, reported?: boolean): string;
export declare function fmtKnownCost(usd: number | undefined | null, fullyReported?: boolean): string;
export declare function fmtLocalTime(isoStr: string): string;
export declare function delta(a: number | undefined | null, b: number | undefined | null, lowerIsBetter?: boolean): string;
export declare const COLORS: string[];
export declare const I18N: Record<Lang, Record<string, string>>;
export declare const DEFAULT_LANG: Lang;
export declare function t(key: string, lang?: Lang): string;
export declare function layout(title: string, body: string, lang?: Lang): string;