将Smart Contracts与@usedapp和@ethersproject/contracts一起使用时出现奇怪的错误

Question

你好，我正在尝试使用一份合同，该合同是在可靠的基础上使用React和typescript与brownie一起部署在我的前端。同样使用使用的框架，正如文档here所说的那样，为了与约定功能交互，我应该创建一个新的约定，提供地址和ABI。下面是我的代码：

import {useContractFunction, useEthers} from '@usedapp/core'
import TokenFarm from "../chain-info/contracts/TokenFarm.json"
import ERC20 from "../chain-info/contracts/MockERC20.json"
import networkMapping from "../chain-info/deployments/map.json"
import {constants, utils} from "ethers"
import {Contract} from '@ethersproject/contracts'

export const useStakeTokens = (tokenAddress: string) => {
    // chainId 
    const {chainId} = useEthers()
    // abi
    const {abi} = TokenFarm
    // address
    // const dappTokenAddress = chainId ? networkMapping[String(chainId)]["DappToken"][0] : constants.AddressZero
    const tokenFarmAddress = chainId ? networkMapping[String(chainId)]["TokenFarm"][0] : constants.AddressZero
    // approve
    const tokenFarmInterface = new utils.Interface(abi)
    const tokenFarmContract = new Contract(tokenFarmAddress, tokenFarmInterface)

    const erc20ABI = ERC20.abi
    const erc20Interface = new utils.Interface(erc20ABI)
    const erc20Contract = new Contract(tokenAddress, erc20Interface)
    // approve
    const { send: approveErc20Send, state: approveAndStakeErc20State } =
        useContractFunction(erc20Contract, "approve", {
            transactionName: "Approve ERC20 transfer",
        })

}

在使用erc20Contract的useContractFunction上出现错误

Vscode error

这是完整的错误消息

Argument of type 'import("/home/cromewar/Solidity-Projects/full_defi_app/dev/front_end/node_modules/@ethersproject/contracts/lib/index").Contract' is not assignable to parameter of type 'import("/home/cromewar/Solidity-Projects/full_defi_app/dev/front_end/node_modules/@usedapp/core/node_modules/@ethersproject/contracts/lib/index").Contract'.
  Types of property '_runningEvents' are incompatible.
    Type '{ [eventTag: string]: RunningEvent; }' is not assignable to type '{ [eventTag: string]: RunningEvent; }'. Two different types with this name exist, but they are unrelated.
      'string' index signatures are incompatible.
        Type 'RunningEvent' is not assignable to type 'RunningEvent'. Two different types with this name exist, but they are unrelated.
          Types have separate declarations of a private property '_listeners'.  TS2345

    23 |     // approve
    24 |     const { send: approveErc20Send, state: approveAndStakeErc20State } =
  > 25 |         useContractFunction(erc20Contract, "approve", {
       |                             ^
    26 |             transactionName: "Approve ERC20 transfer",
    27 |         })
    28 |

Argument of type 'import("/home/cromewar/Solidity-Projects/full_defi_app/dev/front_end/node_modules/@ethersproject/contracts/lib/index").Contract' is not assignable to parameter of type 'import("/home/cromewar/Solidity-Projects/full_defi_app/dev/front_end/node_modules/@usedapp/core/node_modules/@ethersproject/contracts/lib/index").Contract'.
  Types of property '_runningEvents' are incompatible.
    Type '{ [eventTag: string]: RunningEvent; }' is not assignable to type '{ [eventTag: string]: RunningEvent; }'. Two different types with this name exist, but they are unrelated.
      'string' index signatures are incompatible.
        Type 'RunningEvent' is not assignable to type 'RunningEvent'. Two different types with this name exist, but they are unrelated.
          Types have separate declarations of a private property '_listeners'.  TS2345

它说类型是不兼容的，但它们实际上是完全相同的，有人知道发生了什么吗？

Answer 1

解决方案：

替换为：

import {Contract} from '@ethersproject/contracts'

为此：

import {Contract} from '@usedapp/core/node_modules/@ethersproject/contracts'