@langchain/core/dist/tracers/run_collector.d.ts

Core LangChain.js abstractions and schemas

import { BaseTracer } from "./base.js";
import { BaseRun, Run } from "langsmith/schemas";
/**
 * A callback handler that collects traced runs and makes it easy to fetch the traced run object from calls through any langchain object.
 * For instance, it makes it easy to fetch the run ID and then do things with that, such as log feedback.
 */
export declare class RunCollectorCallbackHandler extends BaseTracer {
  /** The name of the callback handler. */
  name: string;
  /** The ID of the example. */
  exampleId?: string;
  /** An array of traced runs. */
  tracedRuns: Run[];
  /**
   * Creates a new instance of the RunCollectorCallbackHandler class.
   * @param exampleId The ID of the example.
   */
  constructor({ exampleId }?: {
    exampleId?: string;
  });
  /**
   * Persists the given run object.
   * @param run The run object to persist.
   */
  protected persistRun(run: BaseRun): Promise<void>;
}
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