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Introducing Enhanced Alert Actions and Triage Functionality
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eth-block-tracker
Advanced tools
Readme
This module walks the Ethereum blockchain, keeping track of the latest block. It uses a web3 provider as a data source and will continuously poll for the next block.
const HttpProvider = require('ethjs-provider-http')
const BlockTracker = require('eth-block-tracker')
const provider = new HttpProvider('https://mainnet.infura.io')
const blockTracker = new BlockTracker({ provider })
blockTracker.on('block', console.log)
blockTracker.start()
creates a new block tracker with provider
as a data source and
pollingInterval
(ms) timeout between polling for the latest block.
synchronous returns the current block. may be null
.
console.log(blockTracker.getCurrentBlock())
Start walking from the fromBlock
(default: 'latest'
) forward.
fromBlock
should be a number as a hex encoded string.
blockTracker.start()
blockTracker.start({ fromBlock: '0x00' })
Stop walking the blockchain.
blockTracker.stop()
The block
event is emitted for every block in order.
Use this event if you want to operate on every block without missing any.
blockTracker.on('block',console.log)
The latest
event is emitted for every that is detected to be the latest block.
This means skipping a block if there were two created since the last polling period.
Use this event if you don't care about stale blocks.
blockTracker.on('latest',console.log)
Does not currently handle forks.
FAQs
A block tracker for the Ethereum blockchain. Keeps track of the latest block.
We found that eth-block-tracker demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 13 open source maintainers collaborating on the project.
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