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langchain

Typescript bindings for langchain

0.0.141
Source
npm
Version published
Weekly downloads
846K
-0.88%
Maintainers
3
Weekly downloads
Ā 
Created

What is langchain?

The langchain npm package is designed to facilitate the development of applications that leverage language models. It provides tools for chaining together different language model operations, managing prompts, and integrating with various data sources.

What are langchain's main functionalities?

Prompt Management

This feature allows you to create and manage prompts easily. You can define templates and format them with dynamic data.

const { PromptTemplate } = require('langchain');

const template = new PromptTemplate('Translate the following text to French: {text}');
const prompt = template.format({ text: 'Hello, how are you?' });
console.log(prompt); // Output: Translate the following text to French: Hello, how are you?

Chaining Operations

This feature allows you to chain together multiple operations, where the output of one step becomes the input to the next.

const { Chain } = require('langchain');

const chain = new Chain();
chain.addStep(async (input) => `Step 1: ${input}`);
chain.addStep(async (input) => `Step 2: ${input}`);

chain.run('Initial Input').then(console.log); // Output: Step 2: Step 1: Initial Input

Integration with Data Sources

This feature allows you to integrate with various data sources, making it easy to fetch and use data within your language model operations.

const { DataSource } = require('langchain');

const dataSource = new DataSource('https://api.example.com/data');
dataSource.fetch().then(data => console.log(data));

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Keywords

llm

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Package last updated on 03 Sep 2023

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