Learn LangChain.js
Put yourself on the bleeding edge of AI by harnessing the power of LangChain Expression Language to build a chatbot that has deep knowledge of a provided document.
94 min
Content
About
What you'll learn and build
Introduction to LangChain from Jacob Lee (Lead Maintainer of LangChain.js)
App Flow Diagrams
What are embeddings?
Supabase Setup
Split the text
Split the text II
Upload to supabase
Starter code
Explainer: The Standalone Question
Aside: Prompt Templates
Adding the first chain
Retrieval
Add StringOutputParser
Fetching the answer: the template
Serialize the docs
Aside: RunnableSequence
Aside: RunnableSequence 2
Aside: RunnableSequence 3: RunnablePassthrough
Super Challenge - add the RunnableSequence
Super Challenge - solution
Wire up the UI
Setting up the memory
Super Challenge: Wire up the memory
Performance Issues Check-list
v0.2 Path Updates
LangChain Outro
Certificate of Completion