import type { Step } from '@workflow/world';
import type { ModelMessage } from 'ai';
/**
 * Formats a duration in milliseconds to a human-readable string.
 *
 * @param ms - Duration in milliseconds
 * @param compact - If true, returns a single-unit format (e.g., "45s", "2.5m").
 *                  If false (default), returns multi-part format (e.g., "1h 30m", "2d 5h").
 *
 * Compact format:
 * - < 1s: shows milliseconds (e.g., "500ms")
 * - < 1m: shows seconds (e.g., "45s")
 * - < 1h: shows minutes (e.g., "45m")
 * - >= 1h: shows hours (e.g., "2.5h")
 *
 * Full format:
 * - < 1s: shows milliseconds (e.g., "500ms")
 * - < 1m: shows seconds (e.g., "45.5s")
 * - >= 1m: shows human-readable format (e.g., "1h 30m", "2d 5h")
 */
export declare function formatDuration(ms: number, compact?: boolean): string;
/**
 * Returns a formatted pagination display string
 * @param currentPage - The current page number
 * @param totalPages - The total number of pages visited so far
 * @param hasMore - Whether there are more pages available
 * @returns Formatted string like "Page 1 of 3+" or "Page 2 of 2"
 */
export declare function getPaginationDisplay(currentPage: number, totalPages: number, hasMore: boolean): string;
/**
 * Check if a step is a doStreamStep (LLM call with conversation input)
 */
export declare function isDoStreamStep(stepName: string): boolean;
/**
 * Extract the conversation from a hydrated doStreamStep input.
 * doStreamStep signature: (conversationPrompt, model, writable, tools, options)
 * So input[0] is the conversation.
 */
export declare function extractConversation(stepInput: unknown): ModelMessage[] | null;
/**
 * A doStreamStep with its conversation input extracted
 */
export interface StreamStep {
    stepId: string;
    stepName: string;
    displayName: string;
    conversation: ModelMessage[];
}
/**
 * Identifies all stream steps (doStreamStep) in a run and extracts their conversations.
 */
export declare function identifyStreamSteps(steps: Step[]): StreamStep[];
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