agsamantha/node_modules/langchain/dist/experimental/plan_and_execute/base.cjs
2024-10-02 15:15:21 -05:00

97 lines
3 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ChainStepExecutor = exports.LLMPlanner = exports.ListStepContainer = exports.BaseStepContainer = exports.BaseStepExecutor = exports.BasePlanner = void 0;
/**
* Abstract class that defines the structure for a planner. Planners are
* responsible for generating a plan based on inputs.
*/
class BasePlanner {
}
exports.BasePlanner = BasePlanner;
/**
* Abstract class that defines the structure for a step executor. Step
* executors are responsible for executing a step based on inputs.
*/
class BaseStepExecutor {
}
exports.BaseStepExecutor = BaseStepExecutor;
/**
* Abstract class that defines the structure for a step container. Step
* containers are responsible for managing steps.
*/
class BaseStepContainer {
}
exports.BaseStepContainer = BaseStepContainer;
/**
* Class that extends BaseStepContainer and provides an implementation for
* its methods. It maintains a list of steps and provides methods to add a
* step, get all steps, and get the final response.
*/
class ListStepContainer extends BaseStepContainer {
constructor() {
super(...arguments);
Object.defineProperty(this, "steps", {
enumerable: true,
configurable: true,
writable: true,
value: []
});
}
addStep(action, result) {
this.steps.push({ action, result });
}
getSteps() {
return this.steps;
}
getFinalResponse() {
return this.steps[this.steps.length - 1]?.result?.response;
}
}
exports.ListStepContainer = ListStepContainer;
/**
* Class that extends BasePlanner and provides an implementation for the
* plan method. It uses an instance of LLMChain and an output parser to
* generate a plan.
*/
class LLMPlanner extends BasePlanner {
constructor(llmChain, outputParser) {
super();
Object.defineProperty(this, "llmChain", {
enumerable: true,
configurable: true,
writable: true,
value: llmChain
});
Object.defineProperty(this, "outputParser", {
enumerable: true,
configurable: true,
writable: true,
value: outputParser
});
}
async plan(inputs, runManager) {
const output = await this.llmChain.run(inputs, runManager);
return this.outputParser.parse(output);
}
}
exports.LLMPlanner = LLMPlanner;
/**
* Class that extends BaseStepExecutor and provides an implementation for
* the step method. It uses an instance of BaseChain to execute a step.
*/
class ChainStepExecutor extends BaseStepExecutor {
constructor(chain) {
super();
Object.defineProperty(this, "chain", {
enumerable: true,
configurable: true,
writable: true,
value: chain
});
}
async step(inputs, runManager) {
const chainResponse = await this.chain.call(inputs, runManager);
return { response: chainResponse.output };
}
}
exports.ChainStepExecutor = ChainStepExecutor;