@langchain/core/dist/callbacks/dispatch/index.js

Core LangChain.js abstractions and schemas

import { AsyncLocalStorageProviderSingleton } from "../../singletons/async_local_storage/index.js";
import "../../singletons/index.js";
import { ensureConfig } from "../../runnables/config.js";
import { dispatchCustomEvent } from "./web.js";
import { AsyncLocalStorage } from "node:async_hooks";

//#region src/callbacks/dispatch/index.ts
AsyncLocalStorageProviderSingleton.initializeGlobalInstance(new AsyncLocalStorage());
/**
* Dispatch a custom event.
*
* Note: this method is only supported in non-web environments
* due to usage of async_hooks to infer config.
*
* If you are using this method in the browser, please import and use
* from "@langchain/core/callbacks/dispatch/web".
*
* @param name The name of the custom event.
* @param payload The data for the custom event.
*   Ideally should be JSON serializable to avoid serialization issues downstream, but not enforced.
* @param config Optional config object.
*
* @example
* ```typescript
* import { dispatchCustomEvent } from "@langchain/core/callbacks/dispatch";
*
* const foo = RunnableLambda.from(async (input: string) => {
*   await dispatchCustomEvent("my_custom_event", { arbitraryField: "someval" });
*   return input;
* });
*
* const callbacks = [{
*   handleCustomEvent: (eventName: string, payload: any) => {
*     // Logs "my_custom_event" and { arbitraryField: "someval" }
*     console.log(eventName, payload);
*   }
* }];
*
* await foo.invoke("hi", { callbacks })
* ```
*/
async function dispatchCustomEvent$1(eventName, payload, config) {
	const ensuredConfig = ensureConfig(config);
	await dispatchCustomEvent(eventName, payload, ensuredConfig);
}

//#endregion
export { dispatchCustomEvent$1 as dispatchCustomEvent };
//# sourceMappingURL=index.js.map