Class BaseChain<RunInput, RunOutput>Abstract

constructor

• new BaseChain<
      RunInput extends ChainValues = ChainValues,
      RunOutput extends ChainValues = ChainValues,
  >(
      fields?: any,
      verbose?: boolean,
      callbacks?: any,
  ): BaseChain<RunInput, RunOutput>

  Type Parameters

  • RunInput extends ChainValues = ChainValues
  • RunOutput extends ChainValues = ChainValues

  Parameters

  • Optionalfields: any
  • Optionalverbose: boolean

    Deprecated

  • Optionalcallbacks: any

    Deprecated

  Returns BaseChain<RunInput, RunOutput>

Optionalmemory

AbstractinputKeys

• get inputKeys(): string[]

  Returns string[]

lc_namespace

• get lc_namespace(): string[]

  Returns string[]

AbstractoutputKeys

• get outputKeys(): string[]

  Returns string[]

Abstract_call

• _call(values: RunInput, runManager?: any, config?: any): Promise<RunOutput>

  Run the core logic of this chain and return the output

  Parameters

  • values: RunInput
  • OptionalrunManager: any
  • Optionalconfig: any

  Returns Promise<RunOutput>

Abstract_chainType

• _chainType(): string

  Return the string type key uniquely identifying this class of chain.

  Returns string

apply

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

  Parameters

  • inputs: RunInput[]
  • Optionalconfig: any[]

  Returns Promise<RunOutput[]>

  Deprecated

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

  Call the chain on all inputs in the list

call

• call(values: any, config?: any, tags?: string[]): Promise<RunOutput>

  Parameters

  • values: any
  • Optionalconfig: any
  • Optionaltags: 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: RunInput, options?: any): Promise<RunOutput>

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

  Parameters

  • input: RunInput

    Input values for the chain run.

  • Optionaloptions: any

  Returns Promise<RunOutput>

  Promise that resolves with the output of the chain run.

prepOutputs

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

  Parameters

  • inputs: Record<string, unknown>
  • outputs: Record<string, unknown>
  • returnOnlyOutputs: boolean = false

  Returns Promise<Record<string, unknown>>

run

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

  Parameters

  • input: any
  • Optionalconfig: any

  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

Staticdeserialize

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

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

  Parameters

  • data: SerializedBaseChain
  • values: LoadValues = {}

  Returns Promise<BaseChain<ChainValues, ChainValues>>