import type { ProgressRow, ProgressTheme, ProgressView } from "./types.ts";
export interface RenderOptions {
    /** Terminal columns. Degradation (progress §4.10) is decided entirely from this. */
    readonly width: number;
    readonly theme: ProgressTheme;
    /**
     * The braille spinner's frame, advanced by the host's 120 ms timer (progress §4.8) and passed in
     * rather than read from a clock — animation state that lived here would make every render
     * time-dependent and unassertable.
     */
    readonly frame?: number;
    /**
     * The run's short form for the header (progress §4.1) — `runIdHash(runId)`, which the host computes,
     * since `src/host/naming.ts` owns that shape and this layer may not import it. Defaults to the run
     * id's trailing 8 characters, which is the same string.
     */
    readonly runLabel?: string;
}
/**
 * Draw the panel: a blank line, the header rule, the tree, and the footer rule that IS the progress bar
 * (progress §4.1). `rows` comes from `collapse` — this module decides nothing about which rows exist,
 * only how they look.
 */
export declare function render(view: ProgressView, rows: readonly ProgressRow[], options: RenderOptions): string[];
/** `3.1s` under a minute, `1m 04s` under an hour, `1:04:22` beyond (progress §4.7). */
export declare function formatDuration(ms: number): string;
/** The same scale with the tenths removed — every duration measured against `now` uses this (progress §4.8). */
export declare function formatWholeSeconds(ms: number): string;
/** The run clock, always `mm:ss` (progress §4.7) — and always whole seconds, being measured against `now`. */
export declare function formatClock(ms: number): string;
/**
 * `4.1k`, `88.2k`, `1.2M` (progress §4.7). Never raw digits above a thousand: they are unreadable at a
 * glance and change width constantly, which is exactly what §4.2's column cannot afford.
 */
export declare function formatTokens(tokens: number): string;
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