/** * Type alias for a record where the keys are strings and the values can * be any type. This is used to represent the input values for a Chain. */ export type InputValues = Record; /** * Type alias for a record where the keys are strings and the values can * be any type. This is used to represent the output values from a Chain. */ export type OutputValues = Record; /** * Type alias for a record where the keys are strings and the values can * be any type. This is used to represent the memory variables in a Chain. */ export type MemoryVariables = Record; /** * Abstract base class for memory in LangChain's Chains. Memory refers to * the state in Chains. It can be used to store information about past * executions of a Chain and inject that information into the inputs of * future executions of the Chain. */ export declare abstract class BaseMemory { abstract get memoryKeys(): string[]; /** * Abstract method that should take an object of input values and return a * Promise that resolves with an object of memory variables. The * implementation of this method should load the memory variables from the * provided input values. * @param values An object of input values. * @returns Promise that resolves with an object of memory variables. */ abstract loadMemoryVariables(values: InputValues): Promise; /** * Abstract method that should take two objects, one of input values and * one of output values, and return a Promise that resolves when the * context has been saved. The implementation of this method should save * the context based on the provided input and output values. * @param inputValues An object of input values. * @param outputValues An object of output values. * @returns Promise that resolves when the context has been saved. */ abstract saveContext(inputValues: InputValues, outputValues: OutputValues): Promise; } /** * This function is used by memory classes to select the input value * to use for the memory. If there is only one input value, it is used. * If there are multiple input values, the inputKey must be specified. */ export declare const getInputValue: (inputValues: InputValues, inputKey?: string) => any; /** * This function is used by memory classes to select the output value * to use for the memory. If there is only one output value, it is used. * If there are multiple output values, the outputKey must be specified. * If no outputKey is specified, an error is thrown. */ export declare const getOutputValue: (outputValues: OutputValues, outputKey?: string) => any; /** * Function used by memory classes to get the key of the prompt input, * excluding any keys that are memory variables or the "stop" key. If * there is not exactly one prompt input key, an error is thrown. */ export declare function getPromptInputKey(inputs: Record, memoryVariables: string[]): string;