import type { AIProviderStreamParams, AIResponseMetadata, AIUsage } from "./ai";
export type AnthropicConfig = {
    apiKey?: string;
    /** Authentication wire format. Defaults to Anthropic's `x-api-key`. */
    authStyle?: "anthropic" | "bearer";
    baseUrl?: string;
    /** Injectable transport for policy, tracing, testing, and private egress. */
    fetch?: (input: string | URL | Request, init?: RequestInit) => Promise<Response>;
    maxTokens?: number;
    headers?: HeadersInit | ((params: AIProviderStreamParams) => HeadersInit | Promise<HeadersInit>);
    providerName?: string;
    /**
     * Enable Anthropic prompt caching breakpoints (tools + system + rolling
     * message prefix). Defaults to `true`. Caching is a silent no-op below the
     * minimum cacheable prefix, so small requests are unaffected. Set `false` to
     * disable entirely.
     */
    promptCaching?: boolean;
    tokenSource?: () => Promise<string> | string;
    transformRequestBody?: (body: Record<string, unknown>, params: AIProviderStreamParams) => Record<string, unknown>;
};
export type AnthropicMessage = {
    content: string | Array<Record<string, unknown>>;
    role: "user" | "assistant";
};
export type AnthropicSSEState = {
    buffer: string;
    currentProviderBlock?: Record<string, unknown>;
    currentToolId: string;
    currentToolName: string;
    isThinkingBlock: boolean;
    stopReason: string;
    thinkingSignature: string;
    toolInputJson: string;
    usage: AIUsage | undefined;
    metadata?: AIResponseMetadata;
    providerName: string;
    providerBlockInputJson: string;
};