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A basic Ethereum block explorer written in TypeScript that updates in real-time using websockets

Home Page: http://explorer.thom.li

Dockerfile 0.72% JavaScript 4.70% TypeScript 75.77% CSS 5.51% Shell 0.09% SCSS 13.21%
ethereum blockchain block-explorer web3 crypto cryptocurrency cryptocurrency-price-ticker javascript typescript socketio

ethereum-block-explorer's Introduction

Ethereum Block Explorer

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...is obviously an Ethereum block explorer that updates in real-time by hooking into Infura's websocket API. It is rendered on the server side, is written in Typescript, and built with React v16.18. It manages Web3 data in the App state by using React's useReducer hooks wrapped in Context higher-order components to bless any component with direct access to anything it needs.

Demo

Want to check out a live action demo?

Here you go!

Getting started

  1. Make sure you have:
    • node v10.13.0+
    • npm | yarn
    • a computer
  2. Clone this repository
  3. cd <CLONED_DIRECTORY>
  4. yarn if you're of the persuarion, else npm i

Building and running

$ npm run build && npm run start:prod

Running dev mode

$ npm start

Notes

  • Operates one block behind current block
    • Temporary fix because sometimes calling web3.eth.getBlock(BLOCK_NUMER) for the newest block would return null.
  • Doesn't reconnect to websocket if it closes after inactivity (Infura disconnects after 1 hour unless pinged).

TO-DO

  • Add # MORE TXs at the bottom of the block cards when over TX count is >100.
  • Add ability to expand card to view overflow transactions.
  • Add transaction USD price data from CoinMarketCap or CryptoCompare.
  • Add more tests (only 1 right now, sorry).

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