/**
 * Anthropic provider - implements the {@link LLMProvider} contract for
 * Anthropic's Messages API (direct + via Veryfront Cloud / Bedrock-compatible
 * proxies).
 *
 * Ported from `src/provider/runtime-loader.ts` as part of PR 12.
 *
 * @module extensions/ext-llm-anthropic/anthropic-provider
 */
import type { LLMProvider, LLMProviderConfig } from "veryfront/extensions/llm";
import type { ModelRuntime } from "veryfront/provider/types";
import { buildProviderError, isNumberArray, mergeUsage, parseRetryAfterMs, ProviderError, ProviderOverloadedError, ProviderQuotaError, ProviderRateLimitError, ProviderRequestError, TOOL_INPUT_PENDING_THRESHOLD_MS } from "veryfront/provider/shared";
import { type OpenAICompatibleLanguageOptions } from "./anthropic-request-builder.js";
import { type AnthropicCitation } from "./anthropic-citations.js";
export { buildProviderError, isNumberArray, mergeUsage, parseRetryAfterMs, ProviderError, ProviderOverloadedError, ProviderQuotaError, ProviderRateLimitError, ProviderRequestError, TOOL_INPUT_PENDING_THRESHOLD_MS, };
export interface AnthropicRuntimeConfig {
    apiKey?: string;
    authToken?: string;
    baseURL?: string;
    name?: string;
    fetch?: typeof globalThis.fetch;
}
type AnthropicReasoningContent = {
    type: "reasoning";
    text?: string;
    signature?: string;
    redactedData?: string;
};
type AnthropicTextContent = {
    type: "text";
    text: string;
    citations?: AnthropicCitation[];
};
type AnthropicToolCallContent = {
    type: "tool-call";
    toolCallId: string;
    toolName: string;
    input: string;
    providerExecuted?: boolean;
};
type AnthropicToolResultContent = {
    type: "tool-result";
    toolCallId: string;
    toolName: string;
    result: unknown;
    isError?: boolean;
    providerExecuted: true;
};
type AnthropicGenerateContent = AnthropicTextContent | AnthropicReasoningContent | AnthropicToolCallContent | AnthropicToolResultContent;
export declare function createAnthropicModelRuntime(config: AnthropicRuntimeConfig, modelId: string): ModelRuntime<OpenAICompatibleLanguageOptions, AnthropicGenerateContent>;
export declare class AnthropicProvider implements LLMProvider {
    readonly id = "anthropic";
    createModel(modelId: string, config: LLMProviderConfig): ModelRuntime<OpenAICompatibleLanguageOptions, AnthropicGenerateContent>;
}
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