import { Attributes, Context, Span } from '@opentelemetry/api';
/**
 * Returns true when a framework instrumentor (LangChain, LiteLLM, etc.)
 * owns the current LLM span. Provider-level wrappers (OpenAI, Anthropic, …)
 * must skip their own span creation when this returns true.
 */
export declare function isFrameworkLlmActive(): boolean;
/**
 * Run `fn` with the framework-LLM-active flag set. All provider wrappers
 * invoked inside `fn` will see `isFrameworkLlmActive() === true`.
 */
export declare function runWithFrameworkLlm<T>(fn: () => T): T;
/**
 * Set framework-LLM-active flag in the current execution context.
 * Used by SpanProcessor-based instrumentations (Strands) where
 * the processor observes spans rather than controlling execution.
 * Mirrors Python's ContextVar.set(True) in Strands processor.
 */
export declare function setFrameworkLlmActive(): void;
/**
 * Reset framework-LLM-active flag in the current execution context.
 * Mirrors Python's ContextVar.reset(token) in Strands processor.
 */
export declare function resetFrameworkLlmActive(): void;
/**
 * Returns true when a LangGraph wrapper is controlling execution.
 * LangChain's callback handler skips its own invoke_workflow span when true.
 */
export declare function isLangGraphActive(): boolean;
export declare function runWithLangGraph<T>(fn: () => T): T;
/**
 * Returns true when a create_agent span is already being handled
 * (prevents duplicate spans between LangChain and LangGraph).
 */
export declare function isCreateAgentActive(): boolean;
export declare function runWithCreateAgent<T>(fn: () => T): T;
/**
 * Propagate conversation ID from invoke_workflow to child node spans.
 * Mirrors Python's set_langgraph_conversation_id / get_langgraph_conversation_id.
 */
export declare function getLangGraphConversationId(): string | undefined;
export declare function runWithLangGraphConversationId<T>(conversationId: string, fn: () => T): T;
/**
 * Returns the OTel context set by a framework processor (OpenAI Agents, etc.)
 * so that provider wrappers can create spans as children of framework spans.
 * Mirrors Python's context_api.attach(set_span_in_context(span)).
 */
export declare function getFrameworkParentContext(): Context | undefined;
/**
 * Set the OTel parent context for provider span creation.
 * Called by processor-based frameworks that cannot use context.with().
 */
export declare function setFrameworkParentContext(ctx: Context): void;
/**
 * Clear the framework parent context.
 */
export declare function clearFrameworkParentContext(): void;
export declare function getServerAddressForProvider(provider: string): [string, number];
/**
 * Apply global (from init) and context-scoped (from usingAttributes /
 * injectAdditionalAttributes) custom attributes to a span.
 * Global attributes are applied first; context attributes override on conflict.
 * Matches Python's _apply_custom_span_attributes().
 */
export declare function applyCustomSpanAttributes(span: Span): void;
/**
 * Get merged custom attributes (global + context) for use in events.
 * Returns a flat object; context attributes override global on conflict.
 */
export declare function getMergedCustomAttributes(): Record<string, any>;
/**
 * Run a function with custom span attributes attached to all
 * auto-instrumented spans created during its execution.
 * Matches Python's openlit.inject_additional_attributes().
 */
export declare function injectAdditionalAttributes<T>(fn: () => T, attributes: Record<string, any>): T;
/**
 * Context wrapper that adds custom attributes to all auto-instrumented
 * spans created within its callback scope.
 * Matches Python's openlit.using_attributes() context manager.
 *
 * Usage:
 *   await usingAttributes({"user.id": "u1", "team": "ml"}, async () => {
 *     await client.chat.completions.create(...);
 *   });
 */
export declare function usingAttributes<T>(attributes: Record<string, any>, fn: () => T): T;
export default class OpenLitHelper {
    static readonly PROMPT_TOKEN_FACTOR = 1000;
    static openaiTokens(text: string, model: string): number;
    static generalTokens(text: string): number;
    static getChatModelCost(model: string, pricingInfo: any, promptTokens: number, completionTokens: number): number;
    static getEmbedModelCost(model: string, pricingInfo: any, promptTokens: number): number;
    static getImageModelCost(model: string, pricingInfo: any, size: string, quality: number): number;
    static getAudioModelCost(model: string, pricingInfo: any, prompt: string): number;
    static fetchPricingInfo(pricingJson: any): Promise<any>;
    /**
     * Build OTel-spec input messages JSON string from provider messages array.
     * Format: [{"role": "user", "parts": [{"type": "text", "content": "..."}]}]
     */
    static buildInputMessages(messages: any[], system?: string): string;
    /**
     * Build OTel-spec output messages JSON string from provider response.
     * Format: [{"role": "assistant", "parts": [{"type": "text", "content": "..."}], "finish_reason": "stop"}]
     */
    static buildOutputMessages(text: string, finishReason: string, toolCalls?: any[]): string;
    /**
     * Emit an inference event via the LoggerProvider, matching Python SDK's
     * gen_ai.client.inference.operation.details event.
     * Falls back to span.addEvent if LoggerProvider is not available.
     */
    static emitInferenceEvent(span: Span, attrs: Attributes): void;
    static handleException(span: Span, error: Error): void;
    static createStreamProxy(stream: any, generatorFuncResponse: any): Promise<any>;
}