Class BaseChain<RunInput, RunOutput>Abstract

constructor

• new BaseChain<RunInput, RunOutput>(fields?, verbose?, callbacks?): BaseChain<RunInput, RunOutput>

• Type Parameters

  • RunInput extends ChainValues = ChainValues

  • RunOutput extends ChainValues = ChainValues

  Parameters

  • Optional fields: ChainInputs | BaseMemory

  • Optional verbose: boolean

    Deprecated

  • Optional callbacks: CallbackManager | (BaseCallbackHandler | BaseCallbackHandlerMethodsClass)[]

    Deprecated

  Returns BaseChain<RunInput, RunOutput>

Optional memory

Abstract inputKeys

• get inputKeys(): string[]

• Returns string[]

Abstract outputKeys

• get outputKeys(): string[]

• Returns string[]

apply

• apply(inputs, config?): Promise<RunOutput[]>

• Parameters

  • inputs: RunInput[]

  • Optional config: (RunnableConfig | CallbackManager | (BaseCallbackHandler | BaseCallbackHandlerMethodsClass)[])[]

  Returns Promise<RunOutput[]>

  ⚠️ Deprecated ⚠️

  Use .batch() instead. Will be removed in 0.2.0.

  This feature is deprecated and will be removed in the future.

  It is not recommended for use.

  Call the chain on all inputs in the list

call

• call(values, config?, tags?): Promise<RunOutput>

• Parameters

  • values: ChainValues & {
        signal?: AbortSignal;
        timeout?: number;
    }

  • Optional config: RunnableConfig | CallbackManager | (BaseCallbackHandler | BaseCallbackHandlerMethodsClass)[]

  • Optional tags: string[]

    Deprecated

  Returns Promise<RunOutput>

  Deprecated

  Use .invoke() instead. Will be removed in 0.2.0.

  Run the core logic of this chain and add to output if desired.

  Wraps _call and handles memory.

invoke

• invoke(input, options?): Promise<RunOutput>

• Invoke the chain with the provided input and returns the output.

  Parameters

  • input: RunInput

    Input values for the chain run.

  • Optional options: RunnableConfig

  Returns Promise<RunOutput>

  Promise that resolves with the output of the chain run.

prepOutputs

• prepOutputs(inputs, outputs, returnOnlyOutputs?): Promise<Record<string, unknown>>

• Parameters

  • inputs: Record<string, unknown>

  • outputs: Record<string, unknown>

  • returnOnlyOutputs: boolean = false

  Returns Promise<Record<string, unknown>>

run

• run(input, config?): Promise<string>

• Parameters

  • input: any

  • Optional config: RunnableConfig | CallbackManager | (BaseCallbackHandler | BaseCallbackHandlerMethodsClass)[]

  Returns Promise<string>

  Deprecated

  Use .invoke() instead. Will be removed in 0.2.0.

serialize

• serialize(): SerializedBaseChain

• Return a json-like object representing this chain.

  Returns SerializedBaseChain

Static deserialize

• deserialize(data, values?): Promise<BaseChain<ChainValues, ChainValues>>

• Load a chain from a json-like object describing it.

  Parameters

  • data: SerializedBaseChain

  • values: LoadValues = {}

  Returns Promise<BaseChain<ChainValues, ChainValues>>