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@digicat/ethereum-finality-watcher
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Observes blocks on a web3.js-compatible Ethereum network, providing callbacks for when a block is considered final
This package can observe blocks on a web3.js-compatible Ethereum network, providing callbacks for when a block is considered final. Requires Node.js 8 or newer.
const FinalityWatcher = require('@digicat/ethereum-finality-watcher')
const watcher = new FinalityWatcher({
// Number of blocks that need to be added before an earlier block is
// considered final. Defaults to 0.
blockchainConfirmationDelay: 0,
ethereumNode: 'http://localhost:8545',
interval: 30000, // Interval on which we check for finality. Default is 30s.
onError (err) {
// Called when an error occurred. Expected to be synchronous.
},
wrapWeb3Error (err) {
// Allows for underlying Web3 errors to be wrapped in another Error class.
// By default returns the error as-is.
return err
}
})
// Checks if the hash for the given block number, once that block is final,
// equals the given hash.
//
// Returns a promise that is fulfilled with the `true` if the final hash is
// indeed the same, `false` otherwise. The promise never rejects, and if the
// watcher is stopped the promise will remain pending.
const result = await watcher.isFinal(42, '0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3')
// Stops the watcher.
watcher.stop()
FAQs
Observes blocks on a web3.js-compatible Ethereum network, providing callbacks for when a block is considered final
The npm package @digicat/ethereum-finality-watcher receives a total of 0 weekly downloads. As such, @digicat/ethereum-finality-watcher popularity was classified as not popular.
We found that @digicat/ethereum-finality-watcher demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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