import type { ProviderEvent, ProviderUsage } from '../provider.js';
import type { Message, OutputEvent, ResponseMetadata, SessionMetadata } from '../types.js';
import { BudgetExceededError } from '../../utils/errors.js';
import type { TraceSink } from '../trace/index.js';
export type TransformDeps = {
    conversationHistory: Message[];
    getSessionMetadata: () => SessionMetadata;
    setSessionMetadata: (updater: (prev: SessionMetadata) => SessionMetadata) => void;
    updateSessionIdentity: (sessionId?: string) => void;
    resolveInitialization: () => void;
    setLastResponseMetadata: (metadata: ResponseMetadata) => void;
    maxBudgetUsd?: number;
    abortBudget?: (reason: BudgetExceededError) => void;
    _runningCostUsd?: number;
    _successfulToolNames?: string[];
    traceWriter?: TraceSink;
};
export declare function parsePersistedOutput(content: string): {
    sizeLabel: string;
    sizeBytes: number;
    absolutePath: string;
} | null;
export declare function usageToMetadata(usage: ProviderUsage, sessionId: string | undefined): ResponseMetadata;
export declare function transformProviderEvent(event: ProviderEvent, deps: TransformDeps): OutputEvent | null;