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This commit is contained in:
Willian Mitsuda 2022-08-22 16:26:24 -03:00
parent d0f68000be
commit d13671b75d
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8
src/useLatestBlock.ts
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@ -36,6 +36,11 @@ export const useLatestBlock = (provider?: JsonRpcProvider) => {
return latestBlock; return latestBlock;
}; };
/**
* Returns the latest block number AND hook an internal listener
* that'll update and trigger a component render as a side effect
* every time it is notified of a new block by the web3 provider.
*/
export const useLatestBlockNumber = (provider?: JsonRpcProvider) => { export const useLatestBlockNumber = (provider?: JsonRpcProvider) => {
const [latestBlock, setLatestBlock] = useState<number>(); const [latestBlock, setLatestBlock] = useState<number>();
@ -44,12 +49,15 @@ export const useLatestBlockNumber = (provider?: JsonRpcProvider) => {
return; return;
} }
// Immediately read and set the latest block number
const readLatestBlock = async () => { const readLatestBlock = async () => {
const blockNum = await provider.getBlockNumber(); const blockNum = await provider.getBlockNumber();
setLatestBlock(blockNum); setLatestBlock(blockNum);
}; };
readLatestBlock(); readLatestBlock();
// Hook a listener that'll update the latest block number
// every time it is notified of a new block
const listener = async (blockNumber: number) => { const listener = async (blockNumber: number) => {
setLatestBlock(blockNumber); setLatestBlock(blockNumber);
}; };