generateCalldata.js

generateCalldata.js

const ethers = require("ethers");

async function main() {
  if (!process.argv[2] || !process.argv[3]) {
    console.log("\nUsage: node generateCalldata.js <function signature> <args>");
    console.log('e.g node generateCalldata.js "myFunction((uint8,bool)[],uint256)" "[[1,true],[2,false]],12345678"');
    console.log("\n")
    throw Error
  }

  const sig = process.argv[2];
  const abi = [`function ${sig}`];

  const funcName = sig.substr(0, sig.indexOf("("));

  const iface = new ethers.utils.Interface(abi);

  const args = JSON.parse(`[${process.argv[3]}]`);

  const calldata = iface.encodeFunctionData(funcName, args);

  console.log(calldata);
}

main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });