Class TransformChain<I, O>

Class that represents a transform chain. It extends the BaseChain class and implements the TransformChainFields interface. It provides a way to transform input values to output values using a specified transform function.

Type Parameters

Hierarchy

Constructors

Properties

inputVariables: (keyof I extends string
    ? keyof any
    : never)[]
outputVariables: (keyof O extends string
    ? keyof any
    : never)[]
transformFunc: ((values, callbacks?) => O | Promise<O>)

Type declaration

    • (values, callbacks?): O | Promise<O>
    • Parameters

      Returns O | Promise<O>

verbose: boolean

Whether to print out response text.

callbacks?: Callbacks
memory?: BaseMemory
metadata?: Record<string, unknown>
tags?: string[]

Accessors

  • get inputKeys(): (keyof I extends string
        ? keyof any
        : never)[]
  • Returns (keyof I extends string
        ? keyof any
        : never)[]

  • get outputKeys(): (keyof O extends string
        ? keyof any
        : never)[]
  • Returns (keyof O extends string
        ? keyof any
        : never)[]

Methods

  • 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

    Returns AsyncGenerator<RunLogPatch, any, unknown>

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