设置状态时出现语法错误

Question

我正在尝试像这样在 Next.js 中设置初始状态：

constructor(props: Props) {
    super(props);
    const emptyContract = new ethers.Contract(
      "",
      "",
      new ethers.providers.JsonRpcProvider("")
    );
    this.state = {
      account: "0x0",
      blockchainDataLoaded: false,
      futNFT: emptyContract,
      futNFTMatch: emptyContract,
      futNFTTraining: emptyContract,
      futNFTTransfer: emptyContract,
      vrfConsumer: emptyContract,
    };
  }

但是我得到这个错误：SyntaxError: Unexpected end of JSON input

Answer 1

Contract 构造函数的第二个参数是一个数组，因此替换为：

const emptyContract = new ethers.Contract(
  "",
  "",
  new ethers.providers.JsonRpcProvider("")
);

与：

const emptyContract = new ethers.Contract(
  "",
  [],
  new ethers.providers.JsonRpcProvider("")
);