@n8n/n8n-nodes-langchain
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JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var MemoryChatRetriever_node_exports = {};
__export(MemoryChatRetriever_node_exports, {
MemoryChatRetriever: () => MemoryChatRetriever
});
module.exports = __toCommonJS(MemoryChatRetriever_node_exports);
var import_n8n_workflow = require("n8n-workflow");
function simplifyMessages(messages) {
const chunkedMessages = [];
for (let i = 0; i < messages.length; i += 2) {
chunkedMessages.push([messages[i], messages[i + 1]]);
}
const transformedMessages = chunkedMessages.map((exchange) => {
const simplified = {
[exchange[0]._getType()]: exchange[0].content
};
if (exchange[1]) {
simplified[exchange[1]._getType()] = exchange[1].content;
}
return {
json: simplified
};
});
return transformedMessages;
}
class MemoryChatRetriever {
constructor() {
this.description = {
displayName: "Chat Messages Retriever",
name: "memoryChatRetriever",
icon: "fa:database",
iconColor: "black",
group: ["transform"],
hidden: true,
version: 1,
description: "Retrieve chat messages from memory and use them in the workflow",
defaults: {
name: "Chat Messages Retriever"
},
codex: {
categories: ["AI"],
subcategories: {
AI: ["Miscellaneous"]
},
resources: {
primaryDocumentation: [
{
url: "https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.memorymanager/"
}
]
}
},
inputs: [
import_n8n_workflow.NodeConnectionTypes.Main,
{
displayName: "Memory",
maxConnections: 1,
type: import_n8n_workflow.NodeConnectionTypes.AiMemory,
required: true
}
],
outputs: [import_n8n_workflow.NodeConnectionTypes.Main],
properties: [
{
displayName: "This node is deprecated. Use 'Chat Memory Manager' node instead.",
type: "notice",
default: "",
name: "deprecatedNotice"
},
{
displayName: "Simplify Output",
name: "simplifyOutput",
type: "boolean",
description: "Whether to simplify the output to only include the sender and the text",
default: true
}
]
};
}
async execute() {
this.logger.debug("Executing Chat Memory Retriever");
const memory = await this.getInputConnectionData(import_n8n_workflow.NodeConnectionTypes.AiMemory, 0);
const simplifyOutput = this.getNodeParameter("simplifyOutput", 0);
const messages = await memory?.chatHistory.getMessages();
if (simplifyOutput && messages) {
return [simplifyMessages(messages)];
}
const serializedMessages = messages?.map((message) => {
const serializedMessage = message.toJSON();
return { json: serializedMessage };
}) ?? [];
return [serializedMessages];
}
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
MemoryChatRetriever
});
//# sourceMappingURL=MemoryChatRetriever.node.js.map