第五课-单元测试，安装 hardhat-deploy-ethers 报错

[huang4718739]

npm install --save-dev @nomicfoundation/hardhat-ethers ethers hardhat-deploy hardhat-deploy-ethers

错误 信息如下：
web3_tutorial % npm install --save-dev @nomicfoundation/hardhat-ethers ethers hardhat-deploy hardhat-deploy-ethers
npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: web3_tutorial@1.0.0
npm error Found: hardhat-deploy@1.0.1
npm error node_modules/hardhat-deploy
npm error dev hardhat-deploy@"^1.0.1" from the root project
npm error
npm error Could not resolve dependency:
npm error peer hardhat-deploy@"^0.12.0" from hardhat-deploy-ethers@0.4.2
npm error node_modules/hardhat-deploy-ethers
npm error dev hardhat-deploy-ethers@"*" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry
npm error this command with --force or --legacy-peer-deps
npm error to accept an incorrect (and potentially broken) dependency resolution.
npm error
npm error
npm error For a full report see:
npm error /Users/huangyulin/.npm/_logs/2025-03-19T16_34_49_101Z-eresolve-report.txt
npm error A complete log of this run can be found in: /Users/huangyulin/.npm/_logs/2025-03-19T16_34_49_101Z-debug-0.log

[huang4718739]

这个错误是 hardhat-deploy 版本太高的缘故
重新安装 hatdhat-deploy：npm install --save-dev hardhat-deploy@0.12.4
然后再安装：hardhat-deploy-ethers：npm install --save-dev @nomicfoundation/hardhat-ethers ethers hardhat-deploy-ethers
问题解决。

[baiwfg2]

getContract 定义果然是在hardhat-deploy-ethers 这个包里，最新版本0.4.2是一年之前的，显然不再维护了。https://github.com/wighawag/hardhat-deploy-ethers/blob/main/src/helpers.ts#L142