https://github.com/samchon/nestia

NestJS Helper + AI Chatbot Development
https://github.com/samchon/nestia

agent ai api class-validator decorator hacktoberfest large-language-model llm llm-function-calling nestjs rag retrieval-augmented-generation sdk swagger trpc typescript typia validator

Last synced: 7 months ago
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NestJS Helper + AI Chatbot Development

• Host: GitHub
• URL: https://github.com/samchon/nestia
• Owner: samchon
• License: mit
• Created: 2021-01-20T09:12:03.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2025-05-07T08:47:32.000Z (7 months ago)
• Last Synced: 2025-05-08T19:08:16.536Z (7 months ago)
• Topics: agent, ai, api, class-validator, decorator, hacktoberfest, large-language-model, llm, llm-function-calling, nestjs, rag, retrieval-augmented-generation, sdk, swagger, trpc, typescript, typia, validator
• Language: TypeScript
• Homepage: https://nestia.io/
• Size: 170 MB
• Stars: 2,010
• Watchers: 11
• Forks: 113
• Open Issues: 48
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

• awesome-typescript - samchon - nestia
• awesome-typescript - nestia - 20,000x faster validation and 200x faster JSON serialization decorators using `typia`. Enable to utilize pure TypeScript interface type as DTO, and overall server performance improved by about 30x times. Also, it supports SDK (collection of `fetch` functions with type definitions) and Mockup Simulator (backend server simulator embedded in SDK) generation, and even possible to migrate NestJS project only by `swagger.json` file. 🚀 (see also: https://nestia.io/docs) (Built with TypeScript / Back-end API)
• awesome-starred - samchon/nestia - NestJS Helper + AI Chatbot Development (TypeScript)

README

          
# Nestia

![Nestia Logo](https://nestia.io/logo.png)

[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/samchon/nestia/blob/master/LICENSE)

[![npm version](https://img.shields.io/npm/v/@nestia/fetcher.svg)](https://www.npmjs.com/package/@nestia/fetcher)

[![Downloads](https://img.shields.io/npm/dm/@nestia/fetcher.svg)](https://www.npmjs.com/package/@nestia/fetcher)

[![Build Status](https://github.com/samchon/nestia/workflows/build/badge.svg)](https://github.com/samchon/nestia/actions?query=workflow%3Abuild)

[![Guide Documents](https://img.shields.io/badge/Guide-Documents-forestgreen)](https://nestia.io/docs/)

[![Gurubase](https://img.shields.io/badge/Gurubase-Document%20Chatbot-006BFF)](https://gurubase.io/g/nestia)

[![Discord Badge](https://img.shields.io/badge/discord-samchon-d91965?style=flat&labelColor=5866f2&logo=discord&logoColor=white&link=https://discord.gg/E94XhzrUCZ)](https://discord.gg/E94XhzrUCZ)

Nestia is a set of helper libraries for NestJS, supporting below features:

  - `@nestia/core`:

    - Super-fast/easy decorators

    - Advanced WebSocket routes

  - `@nestia/sdk`:

    - Swagger generator, more evolved than ever

    - SDK library generator for clients

    - Mockup Simulator for client applications

    - Automatic E2E test functions generator

  - `@nestia/e2e`: Test program utilizing e2e test functions

  - `@nestia/benchmark`: Benchmark program using e2e test functions

  - `@nestia/editor`: Swagger-UI with Online TypeScript Editor

  - `@agentica`: Agentic AI library specialized in LLM function calling

  - `nestia`: Just CLI (command line interface) tool

> [!NOTE]

> 

> - **Only one line** required, with pure TypeScript type

> - Enhance performance **30x** up

>   - Runtime validator is **20,000x faster** than `class-validator`

>   - JSON serialization is **200x faster** than `class-transformer`

> - Software Development Kit

>   - Collection of typed `fetch` functions with DTO structures like [tRPC](https://trpc.io/)

>   - Mockup simulator means embedded backend simulator in the SDK

>     - similar with [msw](https://mswjs.io/), but fully automated

![nestia-sdk-demo](https://user-images.githubusercontent.com/13158709/215004990-368c589d-7101-404e-b81b-fbc936382f05.gif)

> Left is NestJS server code, and right is client (frontend) code utilizing SDK

## Sponsors and Backers

Thanks for your support.

Your donation would encourage `nestia` development.

[![Backers](https://opencollective.com/nestia/backers.svg?avatarHeight=75&width=600)](https://opencollective.com/nestia)

## Guide Documents

Check out the document in the [website](https://nestia.io/docs/):

### 🏠 Home

  - [Introduction](https://nestia.io/docs/)

  - [Setup](https://nestia.io/docs/setup/)

  - [Pure TypeScript](https://nestia.io/docs/pure)

### 📖 Features

  - Core Library

    - [`@WebSocketRoute`](https://nestia.io/docs/core/WebSocketRoute)

    - [`@TypedRoute`](https://nestia.io/docs/core/TypedRoute/)

    - [**`@TypedBody`**](https://nestia.io/docs/core/TypedBody/)

    - [`@TypedParam`](https://nestia.io/docs/core/TypedParam/)

    - [`@TypedQuery`](https://nestia.io/docs/core/TypedQuery/)

    - [`@TypedFormData`](https://nestia.io/docs/core/TypedFormData/)

    - [`@TypedHeaders`](https://nestia.io/docs/core/TypedHeaders/)

    - [`@TypedException`](https://nestia.io/docs/core/TypedException/)

  - Software Development Kit

    - [SDK Builder](https://nestia.io/docs/sdk/)

    - [Mockup Simulator](https://nestia.io/docs/sdk/simulate/)

    - [E2E Test Functions](https://nestia.io/docs/sdk/e2e/)

    - [Distribution](https://nestia.io/docs/sdk/distribute/)

  - Swagger Document

    - [Swagger Builder](https://nestia.io/docs/swagger/)

    - [**AI Chatbot Development**](https://nestia.io/docs/swagger/chat/)

    - [Cloud Swagger Editor](https://nestia.io/docs/swagger/editor/)

    - [Documentation Strategy](https://nestia.io/docs/swagger/strategy/)

  - E2E Testing

    - [Why E2E Test?](https://nestia.io/docs/e2e/why/)

    - [Test Program Development](https://nestia.io/docs/e2e/development/)

    - [Performance Benchmark](https://nestia.io/docs/e2e/benchmark/)

### 🔗 Appendix

  - [API Documents](https://nestia.io/api)

  - [⇲ Benchmark Result](https://github.com/samchon/nestia/tree/master/benchmark/results/11th%20Gen%20Intel(R)%20Core(TM)%20i5-1135G7%20%40%202.40GHz)

  - [⇲ `dev.to` Articles](https://dev.to/samchon/series/22751)