/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 * @plan PLAN-20250909-TOKTRACK.P07
 */
/**
 * Format tokens per minute with K/M suffixes for readability
 * @param tpm Tokens per minute value
 * @returns Formatted string with appropriate suffix
 */
export declare const formatTokensPerMinute: (tpm: number) => string;
/**
 * Format throttle wait time in milliseconds to seconds or minutes
 * @param ms Wait time in milliseconds
 * @returns Formatted string with appropriate units
 */
export declare const formatThrottleTime: (ms: number) => string;
/**
 * Format session token usage for CLI display
 * @param usage Token usage object with input, output, cache, tool, thought, and total fields
 * @returns Formatted string for CLI display
 */
export declare function formatSessionTokenUsage(usage: {
    input: number;
    output: number;
    cache: number;
    tool: number;
    thought: number;
    total: number;
}): string;
