65 lines
2.1 KiB
TypeScript
65 lines
2.1 KiB
TypeScript
import { INode, INodeData, INodeParams } from '../../../src/Interface'
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import { initializeAgentExecutor, AgentExecutor } from 'langchain/agents'
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import { Tool } from 'langchain/tools'
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import { BaseChatModel } from 'langchain/chat_models/base'
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import { BaseChatMemory } from 'langchain/memory'
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import { getBaseClasses } from '../../../src/utils'
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class ConversationalAgent_Agents implements INode {
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label: string
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name: string
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description: string
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type: string
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icon: string
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category: string
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baseClasses: string[]
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inputs: INodeParams[]
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constructor() {
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this.label = 'Conversational Agent'
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this.name = 'conversationalAgent'
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this.type = 'AgentExecutor'
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this.category = 'Agents'
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this.icon = 'agent.svg'
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this.description = 'Conversational agent for a chat model. It will utilize chat specific prompts'
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this.baseClasses = [this.type, ...getBaseClasses(AgentExecutor)]
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this.inputs = [
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{
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label: 'Allowed Tools',
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name: 'tools',
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type: 'Tool',
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list: true
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},
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{
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label: 'Chat Model',
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name: 'model',
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type: 'BaseChatModel'
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},
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{
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label: 'Memory',
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name: 'memory',
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type: 'BaseChatMemory'
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}
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]
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}
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async init(nodeData: INodeData): Promise<any> {
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const model = nodeData.inputs?.model as BaseChatModel
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const tools = nodeData.inputs?.tools as Tool[]
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const memory = nodeData.inputs?.memory as BaseChatMemory
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const executor = await initializeAgentExecutor(tools, model, 'chat-conversational-react-description', true)
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executor.memory = memory
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return executor
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}
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async run(nodeData: INodeData, input: string): Promise<string> {
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const executor = nodeData.instance as AgentExecutor
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const result = await executor.call({ input })
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return result?.output
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}
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}
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module.exports = { nodeClass: ConversationalAgent_Agents }
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