git.delta.rocks / unique-network / refs/commits / 6c4b42e74958

1const { ApiPromise, WsProvider } = require('@polkadot/api');23const connect = async () => {4  const wsEndpoint = 'ws://127.0.0.1:9944'5  const api = new ApiPromise({provider: new WsProvider(wsEndpoint)});6  await api.isReadyOrError;78  const head = (await api.rpc.chain.getHeader()).number.toNumber();9  if(head < 1) throw Error('No block #1');1011  await api.disconnect();12}1314const sleep = time => {15    return new Promise(resolve => {16        setTimeout(() => resolve(), time);17    });18}1920const main = async () => {21  while(true) {22    try {23      await connect();24      break;25    }26    catch(e) {27      await sleep(1000);28    }29  }30}3132main().then(() => process.exit(0)).catch(e => {33  console.error(e);34  process.exit(1);35});