Web3.js read ETH price from MakerDAO medianizer price feed onchain smart contract

eth_usd_price.js

const medianizerAbi = require('./medianizerAbi.json')
const ethers = require('ethers')

const provider = new ethers.getDefaultProvider('mainnet')
const medianizerAddress = '0x729D19f657BD0614b4985Cf1D82531c67569197B'
const medianizerContract = new ethers.Contract(medianizerAddress, medianizerAbi, provider)

;(async () => {
  const value = await medianizerContract.read()
  const usdPrice = ethers.utils.formatEther(value)
  console.log(`$${usdPrice}`) // $144.7675
})()

medianizerAbi.json

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