/**
 * Amazon Bedrock Converse Stream provider.
 *
 * Talks directly to `bedrock-runtime.{region}.amazonaws.com` over HTTPS with
 * SigV4 signing and decodes the `application/vnd.amazon.eventstream` response.
 * No `@aws-sdk/*`, no `@smithy/*`, no `proxy-agent`. Proxies are honored via
 * Bun's native `HTTPS_PROXY` support.
 */
import { parseBedrockClaudeGeneration } from "../bedrock-claude-cache-policy";
import type { Effort } from "../model-thinking";
import type { Model, StreamFunction, StreamOptions, ThinkingBudgets, Tool, ToolChoice } from "../types";
export type BedrockThinkingDisplay = "summarized" | "omitted";
export interface BedrockOptions extends StreamOptions {
    region?: string;
    profile?: string;
    toolChoice?: ToolChoice;
    reasoning?: Effort;
    thinkingBudgets?: ThinkingBudgets;
    interleavedThinking?: boolean;
    /**
     * Controls how Anthropic model returns thinking content in Bedrock responses.
     * - `"summarized"`: thinking blocks include human-readable summaries (default here).
     * - `"omitted"`: thinking content is suppressed; the encrypted signature still
     *   travels back for multi-turn continuity.
     *
     * Starting with Anthropic model Opus 4.7 the Anthropic API default is `"omitted"`, which
     * leaves callers waiting on a silent stream during long reasoning runs (issue
     * #1373). We default to `"summarized"` so adaptive-thinking models that accept
     * the field keep producing visible thinking deltas. Older adaptive-thinking
     * models (Opus 4.6, Sonnet 4.6+) reject the field, so we omit it for them.
     */
    thinkingDisplay?: BedrockThinkingDisplay;
}
interface WireToolSpec {
    toolSpec: {
        name: string;
        description: string;
        inputSchema: {
            json: unknown;
        };
    };
}
interface WireToolChoice {
    auto?: Record<string, never>;
    any?: Record<string, never>;
    tool?: {
        name: string;
    };
}
interface WireToolConfig {
    tools: WireToolSpec[];
    toolChoice?: WireToolChoice;
}
export declare const streamBedrock: StreamFunction<"bedrock-converse-stream">;
/**
 * Check if the model supports prompt caching.
 * Supported: Claude 3.5 Haiku, Claude 3.7 Sonnet, and every later Claude
 * generation:
 * https://docs.aws.amazon.com/bedrock/latest/userguide/prompt-caching.html
 *
 * For base models and system-defined inference profiles the model ID / ARN
 * contains the model name, so we can decide locally.
 *
 * For application inference profiles (whose ARNs don't contain the model name),
 * set AWS_BEDROCK_FORCE_CACHE=1 to enable cache points.  Amazon Nova models
 * have automatic caching and don't need explicit cache points.
 */
export declare function supportsPromptCaching(model: Model<"bedrock-converse-stream">): boolean;
export { parseBedrockClaudeGeneration };
export declare function stripBedrockForcedToolChoiceForRetry<T extends {
    toolConfig?: {
        toolChoice?: unknown;
    };
}>(body: T): T;
export declare function convertToolConfig(tools: Tool[] | undefined, toolChoice: BedrockOptions["toolChoice"]): WireToolConfig | undefined;