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Harsh Mangalam
Harsh Mangalam

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Hydrogen - A social media web app powered by SolidJS and NodeJS

Hi Developers, I have build a social media web app powered by SolidJS in frontend and NodeJS in backend for Solidhack2022.

This was my amazing experience to build something big with solidjs and contribute to open source.

This will be a series where i will discuss how i created this web app using different different features from solidjs and expressjs.

Video Demo

Libraries and Frameworks used


  • solid-js
  • tailwindcss
  • solid-app-router
  • platform
  • dayjs
  • axios
  • solid-icons
  • js-cookie
  • shortid


  • express
  • @prisma/client
  • bcrypt
  • jsonwebtoken
  • express-validator
  • dotenv
  • cookie
  • cookie-parser
  • morgan
  • nodemon
  • prisma


  • Authentication
  • Dark and light mode
  • Friends
  • Posts
  • Groups
  • Notifications
  • Messenger
  • Profile
  • Settings
  • Networking
  • Geolocation
  • Login History
  • much more...

Solidjs Context

In this project i have used Solidjs Context for global state management. Context helps to pass signal and store reactive data to nested components without relaying on props drilling.

You can easily create context and use in components and pages where needed.

import { createContext,useContext } from "solid-js";
import { createStore } from "solid-js/store";

//context for manage state
const MyContextState = createContext();

//context  containing method that will update reactive state data
const MyContextDispatch = createContext();

const initialState = {

// your reactive data initial values comes here...


export default function MyProvider(props) {
  const [store, setStore] = createStore(initialState);

  const myMethod1 = () => {
    // update store value using setStore()

  return (
    <MyContextState.Provider value={store}>

         // so on...




export const useMyState = () => useContext(MyContextState);
export const useMyDispatch = () => useContext(MyContextDispatch);
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Inside your components you can import useMyState and useMyDispatch

Do not destructure reactive data

Do NOT use like this

const {someStoreFields} = useMyState()

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Use like this

const myState = useMyState()

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Solidjs reactivity are based on ES6 Proxy

I have created 4 context

Auth context

Auth context keeps reactive data related to authentication, user details and account. It also manage socket instance when someone successfully authenticated.

My Auth context initial state looks like this

const initialState = {
  isAuthenticated: false,
  isLoading: true,
  currentUser: null,
  currentAccount: null,
  socket: null,
  manager: null,
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socket and manage keeps client related data.

onMount i fetch current user data using jwt token . If it success then i update store data otherwise i redirect to login screen.

Notification context

Notification context track notifications count and data . It use client to fetch realtime notification from server and update store. After that Notification component at Navbar update notification count and data.

My Notification context initial data looks like this

const initialState = {
  count: 0,
  notifications: [],

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UI Context

Ui context keeps track of ui related data like snackbars.

Messenger context

Messenger context keeps track of friends and active chat related data.

Do not make context global when it is not required

I have only those context in global which is required. For example i added auth , notification and ui context global but messenger context is only needed by my messenger route and hence i only scoped messenger context inside messenger route. In this way we can add less weight on top of page.

In my next post i will write about how i used hooks in my application.

Frontend Github repo

GitHub logo harshmangalam / hydrogen-solidjs-client

A social media web app powered by SolidJS

Hydrogen - Social media web app (Powered by SolidJs)


  • install pnpm globally npm i -g pnpm
  • install dependencies pnpm i
  • run dev server pnpm run dev

Setup env file

  • copy .env.example inside .env

Update .env




  • Tailwind form
  • Tailwind css
  • Axios
  • Dayjs
  • Js cookies
  • Platform
  • Shortid
  • Socket io client
  • Solid app router
  • Solid icons
  • Solidjs

80+ Components

25+ hooks

50+ Screens

Dark and light mode


  • Login
  • Signup


  • Navigation
  • Posts feeds
  • My friends


  • My friends
  • Requests received
  • Requests sent
  • Friends Suggestions
  • Send friend request
  • Receive friend request
  • Decline friend request
  • Accept friend request
  • Cancel sent request


  • My posts
  • Trending Posts
  • Friends Posts
  • Create Post
    • Post content
    • Post privacy
    • Add specific friend who will see the post
    • Tag friend
    • Add Images
    • Add feelings
    • Add locations
  • Add and remove heart on post
  • Comment on post
  • Delete post
  • Show post privacy
  • Show post title dynamically…

Backend Github repo

GitHub logo harshmangalam / hydrogen-nodejs-server

A social media backend api powered by Nodejs and Prisma

Hydrogen - Social media REST API (Powered by Nodejs)


  • create .env
  • copy .env.example inside .env
  • setup postgresql and update DATABASE_URL inside .env
  • install dependencies pnpm i
  • create database and tables pnpx prisma db push
  • start server pnpm run dev

Top comments (1)

stevemk42 profile image

..definitely like what's next, just by reading this. Its simple and clear. Thanx ahead for the next episode !