Installation

Requirements

Before you install, make sure your project has:

Node.js v18 or higher
TypeScript v5+
LangChain TypeScript SDK installed

Install the Package


npm install llm-layer-engine

Setup TypeScript

Your tsconfig.json needs these settings for the library to work correctly:


{
  "compilerOptions": {
    "target": "ES2020",
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "strict": true,
    "esModuleInterop": true,
    "outDir": "./dist"
  }
}

Install LangChain (Required Peer Dependency)


npm install langchain @langchain/core

LLM Layer Engine is designed to wrap and extend LangChain workflows. It does not replace LangChain — it works alongside it.

Verify Import

Create a test file to confirm the install works:


import { createAgent, reActLoop } from "llm-layer-engine";
 
console.log("LLM Layer Engine ready:", typeof createAgent);

Run it:


npx ts-node test.ts

If it prints LLM Layer Engine ready: function — you are set up correctly.

Next Step

Run your first agent →