import { InstrumentationBase, InstrumentationModuleDefinition } from '@opentelemetry/instrumentation';
import { InstrumentationConfig } from '@opentelemetry/instrumentation';
export interface LangChainInstrumentationConfig extends InstrumentationConfig {
}
export default class OpenlitLangChainInstrumentation extends InstrumentationBase {
    private _callbackManager;
    private _ritmHook;
    constructor(config?: LangChainInstrumentationConfig);
    protected init(): void | InstrumentationModuleDefinition | InstrumentationModuleDefinition[];
    /** Override enable() to install a direct RITM Hook rather than going through the singleton. */
    enable(): void;
    /** Override disable() to remove our direct RITM Hook. */
    disable(): void;
    /** Called from tests / manual usage — pass the @langchain/core/callbacks/manager exports. */
    manualPatch(callbacksManagerModule: any): void;
    /**
     * Scan require.cache for @langchain/core's dist/callbacks/manager.cjs.
     * It is always loaded as a relative dep before the chat_models hook fires.
     */
    private _patchFromCache;
    private _applyPatch;
    private _unpatch;
}