Lucid evolution

import { Kupmios, Lucid, SLOT_CONFIG_NETWORK } from "@lucid-evolution/lucid";
 
// we fetch the local cluster info to determine the start time
const shelleyParams: any = await fetch("http://localhost:10000/local-cluster/api/admin/devnet/genesis/shelley").then(
  (res) => res.json()
);
 
const zeroTime = new Date(shelleyParams.systemStart).getTime();
const slotLength = shelleyParams.slotLength * 1000; // in milliseconds
 
// for a default devkit cluster, we can now configure time parameters
SLOT_CONFIG_NETWORK["Custom"] = { zeroTime, slotLength, zeroSlot: 0 };
 
// for example we use a kupmios configurion
const kupmios = new Kupmios("http://localhost:1442", "http://localhost:1337");
// now we use our Kupmios provider and tell to use our Custom config settings
const lucid = await Lucid(kupmios, "Custom");
 
const currentTime = Date.now() - 10000;
const laterTime = currentTime + 1000000;
const tx = await lucid
  .newTx()
  .validFrom(currentTime)
  .validTo(laterTime)
  .pay.ToAddress("addr_testa...", { lovelace: 5000000n })
  .pay.ToAddress("addr_testb...", { lovelace: 5000000n })
  .complete();