Class StructuredOutputParser<T>

Class to parse the output of an LLM call.

Type Parameters

  • T extends z.ZodTypeAny

Hierarchy

Constructors

Properties

schema: T

Methods

  • Calls the parser with a given input and optional configuration options. If the input is a string, it creates a generation with the input as text and calls parseResult. If the input is a BaseMessage, it creates a generation with the input as a message and the content of the input as text, and then calls parseResult.

    Parameters

    • input: string | BaseMessage

      The input to the parser, which can be a string or a BaseMessage.

    • Optional options: BaseCallbackConfig

      Optional configuration options.

    Returns Promise<TypeOf<T>>

    A promise of the parsed output.

  • Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state.

    Parameters

    • input: string | BaseMessage
    • Optional options: Partial<BaseCallbackConfig>
    • Optional streamOptions: Omit<LogStreamCallbackHandlerInput, "autoClose">

    Returns AsyncGenerator<RunLogPatch, any, unknown>

  • Default implementation of transform, which buffers input and then calls stream. Subclasses should override this method if they can start producing output while input is still being generated.

    Parameters

    Returns AsyncGenerator<TypeOf<T>, any, unknown>

  • Creates a new StructuredOutputParser from a set of names and descriptions.

    Type Parameters

    • S extends {
          [key: string]: string;
      }

    Parameters

    • schemas: S

      An object where each key is a name and each value is a description

    Returns StructuredOutputParser<ZodObject<{
        [k: string]: T;
    }, "strip", ZodTypeAny, {}, {}>>

    A new instance of StructuredOutputParser.

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