Function watchBlockNumber

Watch for a new block number on a given network.

Example

// this will log out the new block number every time a new block is finalized
const unsubscribe = watchBlockNumber({
  network: "ethereum",
  onBlockNumber: (blockNumber) => {
    console.log("new block number", blockNumber);
  }
});
// later on you can call unsubscribe to stop listening for new blocks
unsubscribe();
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