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我正在使用 Etherscan API 获取交易数据。这是我得到的示例结果：

{
  blockNumber: '7409930',
  timeStamp: '1639151980',
  hash: '...',
  nonce: '4124',
  ...
  input: '0x9d90e4c8000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000002000000000000000000000000093238bb66b5d15b4152c5db574e3397ff1b1a450',
  contractAddress: '',
  cumulativeGasUsed: '403775',
  gasUsed: '1162315',
  confirmations: '191308'
}

我现在需要确定此交易的事件类型（合同方法，例如TransferOwnership，stakeTokens...）。此数据存储在input此对象的属性中。

我设法使用abi-decoder库来完成这项工作，但我想使用 ethers 的实用方法（无论哪种方式）来完成同样的事情。

我目前的实现：

const abiDecoder = require("abi-decoder");
abiDecoder.addABI(contractAbi);
// "item" is transaction data, input property is encoded stuff from which I want to get the contract method used by this transaction
const decodedInput = abiDecoder.decodeMethod(item.input);

// contract method
console.log(decodedInput.name);

我正在阅读以太的文档（https://docs.ethers.io/v5/api/utils/abi/coder/），但我无法弄清楚。

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