/**
 * Provider-native message history adapters.
 *
 * Ported from PSYCHE src/llm/history_adapters.py. Each adapter knows how to
 * format assistant tool-call messages and tool-result messages in the native
 * shape expected by its provider SDK.
 *
 * @task T1394 (T1386-W8)
 * @epic T1386
 */
import type { CompletionResult } from './backend.js';
/** Protocol for history adapters. */
export interface HistoryAdapter {
    formatAssistantToolMessage(result: CompletionResult): Record<string, unknown>;
    formatToolResults(toolResults: Array<{
        toolId: string;
        toolName: string;
        result: unknown;
        isError?: boolean;
    }>): Array<Record<string, unknown>>;
}
/** Anthropic-native tool message formatting. */
export declare class AnthropicHistoryAdapter implements HistoryAdapter {
    formatAssistantToolMessage(result: CompletionResult): Record<string, unknown>;
    formatToolResults(toolResults: Array<{
        toolId: string;
        toolName: string;
        result: unknown;
        isError?: boolean;
    }>): Array<Record<string, unknown>>;
}
/** Gemini-native tool message formatting. */
export declare class GeminiHistoryAdapter implements HistoryAdapter {
    formatAssistantToolMessage(result: CompletionResult): Record<string, unknown>;
    formatToolResults(toolResults: Array<{
        toolId: string;
        toolName: string;
        result: unknown;
        isError?: boolean;
    }>): Array<Record<string, unknown>>;
}
/** OpenAI-native tool message formatting. */
export declare class OpenAIHistoryAdapter implements HistoryAdapter {
    formatAssistantToolMessage(result: CompletionResult): Record<string, unknown>;
    formatToolResults(toolResults: Array<{
        toolId: string;
        toolName: string;
        result: unknown;
        isError?: boolean;
    }>): Array<Record<string, unknown>>;
}
/**
 * Provider-appropriate HistoryAdapter for assistant/tool message formatting.
 *
 * Relocated from `registry.ts` as part of D-ph4-01 factory retirement
 * (T9356/T9369). Lives here alongside the adapter classes it constructs.
 *
 * @param provider - Target transport identifier.
 * @returns A history adapter appropriate for the provider wire format.
 */
export declare function historyAdapterForProvider(provider: string): HistoryAdapter;
//# sourceMappingURL=history-adapters.d.ts.map