Fedify: an ActivityPub server framework

🎉 Excited to announce that #Fedify is now on Open Collective! Support the project's development starting at:

• Backer (from $5/mo)
• Supporter (from $25/mo)
• Sponsor (from $100/mo)
• Corporate Sponsor (from $500/mo)
• Custom donations welcome

Your support will help us maintain and improve Fedify. Check it out here:

https://opencollective.com/fedify

#OpenCollective #support #backing #sponsor #donation

Fedify is an #ActivityPub server framework in #TypeScript & #JavaScript. It aims to eliminate the complexity and redundant boilerplate code when building a federated server app, so that you can focus on your business logic and user experience.

The key features it provides currently are:

• Type-safe objects for Activity Vocabulary (including some vendor-specific extensions)
• #WebFinger client and server
• HTTP Signatures & Linked Data Signatures & Object Integrity Proofs
• Middleware for handling webhooks
• #NodeInfo protocol
• #Node.js, #Deno, and #Bun support
• CLI toolchain for testing and debugging

If you're curious, take a look at the #Fedify website! There's comprehensive docs, a demo, a tutorial, example code, and more:

https://fedify.dev/

Hello, #fediverse! It's the official fedi account of the Fedify, an #ActivityPub server framework!

#Fedify #fedidev

If you'd like to support the development of #Fedify or #Hollo, you can sponsor me on GitHub!

https://github.com/sponsors/dahlia

#fedidev

This frustration later became the impetus for creating @fedify:

https://todon.eu/@hongminhee/110971265294250919

We've released v0.14.0 of #Fedify, the #ActivityPub server framework, with the following key changes:

• It is now possible to set the recipient of the sendActivity() method to "followers" in just the Context instead of the RequestContext.
• Improved performance of the Object.toJsonLd() method by about 3,000 times.
• Added source property to Object.
• Added aliases property to Actor, corresponding to ActivityPub's alsoKnownAs property.
• fedify init command now adds default compilerOptions settings to tsconfig.json and deno.json.

Fedify v0.14.0 is available from JSR and npm. See also the full changelog for details.

Happy #fedidev!

We've added the Inspecting ActivityPub objects section to the #Fedify docs, introducing BrowserPub and the fedify lookup command!

https://unstable.fedify.dev/manual/test#inspecting-activitypub-objects

#ActivityPub #BrowserPub #fedidev

We've added the Inspecting ActivityPub objects section to the #Fedify docs, introducing BrowserPub and the fedify lookup command!

https://unstable.fedify.dev/manual/test#inspecting-activitypub-objects

#ActivityPub #BrowserPub #fedidev

Do you know that? Some of the properties in Activity Vocabulary have been renamed in #Fedify's JavaScript APIs. Below are some examples:

• alsoKnownAs → aliases
• publicKeyPem → publicKey
• hreflang → language
• publicKeyMultibase → publicKey
• orderedItems → items
• oneOf → exclusiveOptions
• anyOf → inclusiveOptions
• votersCount → voters
• attributedTo → attributions
• inReplyTo → replyTargets

#ActivityPub #fedidev

I'm sharing a prototype of #Fedify written in #Python, codenamed “FediKit.” Many of the ideas for Fedify were already implemented in this prototype, albeit in a different language.

https://github.com/dahlia/fedikit

@cybertailor @oleg_ru

Касаясь систем управления контентом с поддержкой #ActivityPub, хотелось бы отметить и библиотеку для построения собственного федеративного сервера @fedify. Отлично подходит, когда "все эти ваши вордпрессы мне нафиг не сдались". :blobcatmeltthumbsup:

#Fedify

For educational purpose, I've created a federated microblog example using #Fedify, with a total of about 30 commits, which you can follow step by step.

Now, I'm starting to write a hands-on Fedify tutorial based on this example code. I'll make it public when I'm done!

https://github.com/dahlia/microblog

#fedidev #ActivityPub

I've rewritten #Fedify several times and in several languages. The first time it was written in #TypeScript, then #Python, then C#, then back to TypeScript. (It was codenamed FediKit at the time of development.) I settled on TypeScript for the following reasons:

• It has a decent JSON-LD implementation.
• Lots of people use it. (I wanted Fedify to be widely used.)
• It's type-safe enough.

Even if I were to build Fedify again, I would choose TypeScript.

#fedidev #CSharp #dotnet #JavaScript

Did you know? #Fedify not only fully supports #Node.js, but also #Deno and #Bun!

Security alert for Fedify users

We've patched a vulnerability in the getActorHandle() function. Versions prior to 0.13.1 and 0.12.3 are affected.

Upgrade immediately:

• npm: 0.13.1 & 0.12.3
• JSR: 0.13.1 & 0.12.3

#Fedify #securityupdate #fediverse #fedidev #ActivityPub

In the next version (v0.14.0) of #Fedify, the performance of the Object.toJsonLd() method will be dramatically (~3k ×) faster. This is expected to improve the overall performance of Fedify apps!

#fedidev #JSONLD #ActivityPub

Oh, and in the template for Deno, compilerOptions is added to the deno.json file (if needed).

The next version of fedify init will also generate a tsconfig.json file with decent default settings.

I feel that the current abstraction level of #Fedify is not high enough which makes the tutorial lengthy, so I'm considering adding a higher-level API. One way would be to add a façade to the @fedify/fedify package, and another way would be to create a sort of metaframework as a separate package (e.g., @fedify/start?). Which way would be better?

#fedidev

Fedify, the #ActivityPub server framework, has released v0.13.0. Key changes include:

• Added fedify tunnel command to expose the local server to the public internet.
• Added Express and Nitro integration templates to the fedify init command.
• Added option to skip HTTP Signatures validation for easier testing.
• Added Question.closed property.
• Added Question.voters property.
• Removed several deprecated APIs.

#Fedify v0.13.0 is available now from JSR and npm.

https://github.com/dahlia/fedify/releases/tag/0.13.0

#fedidev

What other web frameworks would you like to see #Fedify integrate with more?

#fedidev

What other web frameworks would you like to see #Fedify integrate with more?

#fedidev

Introducing @fedify/express, a package that integrates Express, a popular web framework in Node.js, with Fedify. You can install it with the following command:

npm add @fedify/express

This package provides a middleware called integrateFederation() that allows you to integrate #Fedify with #Express:

import express from "express";
import { integrateFederation } from "@fedify/express";
import { federation } from "./federation";  // Your `Federation` instance

export const app = express();

app.set("trust proxy", true);

app.use(integrateFederation(federation, (req) => "context data goes here"));

https://github.com/dahlia/fedify-express

#fedidev #ExpressJS

I'm unsure whether to adopt an emerging JavaScript runtime like #Bun or #Deno for #Fedify's tutorial, or stick with traditional #Node.js. 🤔

If I choose Bun/Deno, it comes with built-in #TypeScript support, hot reloading, and a fetch-style HTTP server, so I don't have to explain much about it, but I need to deal with installing Bun/Deno itself.

On the other hand, Node.js can be assumed to be already installed on the reader's system, but they will need to set up TypeScript, hot reloading, etc.

Starting with the next release, v0.13.0, the fedify tunnel command will be added. The following command exposes a local HTTP server running on port 3000 to the public internet:

fedify tunnel 3000

https://unstable.fedify.dev/cli#fedify-tunnel-exposing-a-local-http-server-to-the-public-internet

#Fedify #localtunnel

I ended up implementing the `fedify tunnel` command to eliminate the ngrok installation and sign-up part of the #Fedify tutorial. 😂

https://unstable.fedify.dev/cli#fedify-tunnel-exposing-a-local-http-server-to-the-public-internet

#연합우주 (#fediverse) 개발을 단순화할 준비가 되셨나요? #Fedify 프레임워크를 확인해보세요!

• 튜토리얼
• API 레퍼런스
• 예제들

더욱 연결된, 더욱 분산된 웹을 만드는 데 동참해주세요! 🌐 #ActivityPub

#Fedify 프레임워크는 #ActivityPub의 실제 쓰임에 집중하고 있습니다. 문서에는 #Mastodon 같은 주요 구현체들이 만든 사실상의 표준에 맞춘 어휘 API 사용법에 대한 가이드가 포함되어 있습니다. 더 적은 고민으로 상호 운용 가능한 앱을 만드세요! 🤝

#ActivityPub 인터랙션 디버깅은 꽤 까다롭죠. 그렇지만 #Fedify 툴체인이 도와드립니다! 테스트와 디버깅을 위한 CLI 툴체인을 포함하고 있어 개발과 트러블슈팅이 쉬워집니다. 머리 싸매는 시간을 줄이고 멋진 기능을 만드는 데 더 많은 시간을 쓰세요! 🔍

#Fedify 프레임워크는 #연합우주 (#fediverse) 개발에 중요한 기능들을 기본으로 내장하고 있습니다:

• #WebFinger 클라이언트와 서버
• HTTP 서명 (HTTP Signatures)
• 객체 무결성 증명 (Object Integrity Proofs)
• NodeInfo 프로토콜
• 바퀴를 재발명할 필요 없어요—#ActivityPub 표준을 위한 핵심 기능을 갖추고 있습니다! 📦

유연성은 중요하죠! #Fedify 프레임워크는 풀 스택 솔루션이 아닙니다—여러분이 좋아하는 웹 프레임워크와 함께 작동하도록 설계되었죠. #Hono 및 #Fresh 등, Fedify는 여러 웹 프레임워크와의 쉬운 통합 옵션을 제공합니다. 여러분만의 방식으로 #연합우주 (#fediverse) 앱을 만드세요! 🛠️

Fedify의 가장 강력한 기능 중 하나는 타입 안전한 어휘 객체입니다. 이는 Activity Vocabulary와 벤더 별 확장을 표현하는데, ActivityPub 객체와 액티비티를 다룰 때 견고하고 안전한 코드를 보장합니다. 런타임 오류와 작별하고 자신 있는 코딩을 시작하세요! 💪🏼

#Fedify 소개: #연합우주 (#fediverse) 상에 #ActivityPub 서버 앱을 만들기 위한 강력한 #TypeScript 라이브러리! 🚀

Fedify는 연합형 앱의 복잡함을 단순화하여 개발자가 가장 중요한 것—고유한 기능과 사용자 경험—에 집중할 수 있게 해줍니다. Fedify의 특징을 살펴볼까요? 🧵