import type React from 'react';
/**
 * Head-truncate a chip's free-text payload (branch, path, project name) with a
 * trailing ellipsis so one long value can't blow out the line width.
 */
export declare function truncateChip(text: string, max: number): string;
/**
 * Recover the visible plain text of a rendered chip by walking its React
 * element tree (string/number leaves only).
 */
export declare function nodeText(node: React.ReactNode): string;
export declare function planChipFit(widths: number[], budget: number, sepCost?: number): number;
export interface TokenDisplayTotals {
    input: number;
    output: number;
}
export declare function tokenDisplayTotals(usage: {
    input: number;
    output: number;
    cacheRead?: number | undefined;
    cacheWrite?: number | undefined;
} | undefined, currentRequest: {
    input: number;
    cacheRead: number;
    cacheWrite?: number | undefined;
} | undefined, estimatedInput?: number | undefined): TokenDisplayTotals;
export declare function hasTokenDisplay(tokens: TokenDisplayTotals): boolean;
export declare function stateChip(state: 'idle' | 'running' | 'streaming' | 'aborting', fleetRunning: number, thinkingWord?: string | undefined): {
    label: string;
    color: string;
};
export declare function renderProgress(ratio: number, width: number): string;
export declare function contextBarColor(ratio: number): string;
export declare function renderMeter(ratio: number, width: number): string;
/**
 * Block-style meter for the sidebar — a solid fill (`█`) plus an empty track
 * (`░`). Returned as two segments so the caller can color the fill (e.g. by
 * context pressure via {@link contextBarColor}) independently of the dim track.
 * Width-safe: `filled.length + empty.length === max(1, width)` always holds.
 */
export declare function blockMeter(ratio: number, width: number): {
    filled: string;
    empty: string;
};
/**
 * Render a 0..1 ratio history as a compact sparkline (oldest → newest, the
 * latest sample is the last character). Each value maps onto one of the eight
 * block levels, so a flat history renders as a flat line and spikes pop as
 * peaks. Only the trailing `width` samples are drawn; a width of 0 (or an
 * empty history) renders nothing.
 */
export declare function sparkline(values: readonly number[], width: number): string;
/**
 * A morphing dial glyph that fills like a loading ring as the ratio rises:
 * `○` (idle) → `◔` → `◑` → `◕` → `●` (saturated). Non-bar replacement for
 * block meters in the sidebar SYSTEM card. Same glyph family as the
 * session-status dots (● ◉ ◐ ○) already used elsewhere in the TUI.
 */
export declare function dialGlyph(ratio: number): string;
export declare function fmtTok(n: number): string;
export declare function fmtMemory(bytes: number): string;
export declare function fmtElapsed(ms: number): string;
export declare function fmtDebugBytes(n: number): string;
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