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1.1 KiB
1.1 KiB
Transfers History
Instructions
- Create a JavaScript file
transfersHistory.jsthat exports the functiontransfersHistory(address, address)that takes as parameters the address of aEventfulTokenSmart Contract instance and the address of an user.
The function will connect to a local node and retrieve the events. It returns an array with all the transfers from that account, starting from the most recent, positive if it is toward the user, and negative if it is outside.
Structure
const { ethers } = require("ethers");
async function transfersHistory(contractAddress, userAddress) {...}
exports.transfersHistory = transfersHistory;
Usage
const { transfersHistory } = require("./transfersHistory.js");
transfersHistory(
"0x3c44cdddb6a900fa2b585dd299e03d12fa4293bc",
"0x70997970c51812dc3a010c7d01b50e0d17dc79c8"
);
/* expected:
[50, -25, 200, 30, -230]
*/