问题描述
只是遇到了这个错误:
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/react
npm ERR! react@"17.0.1" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer react@"^16.8.0" from [email protected]
npm ERR! node_modules/react-hook-mousetrap
npm ERR! react-hook-mousetrap@"*" from the root project
npm ERR!
我要安装的模块似乎与我已安装的模块具有不同的对等依赖性.看来npm改变了这方面的行为，现在让安装失败.
The module I am trying to install seems to have a different peer dependency from what I have installed. It seems like npm changed its behaviour in this regard and now lets the install fail.
现在我该怎么做才能解决此问题?我不想为此降级我的React版本.
What can I do now to fix this? I don't want to downgrade my React version for this.
我知道有一个名为-legacy-peer-deps 的标志，但是我不确定这样做到底是什么，是否建议使用它/潜在的缺点是什么?我认为npm导致安装失败是有原因的.
I know there is a flag called --legacy-peer-deps but I am not sure what exactly this does and whether it's recommended to use it / what the potential disadvantages are? I assume there is a reason npm did let the install fail.
这很奇怪，因为直到最近我一直在使用 yarn ，一切都很好.
It's just strange because I was using yarn up until very recently and everything was fine.
推荐答案
这是我解决此问题的方法:
Here's how I solved this problem:
首先，正在发生的事情:react-hook-mousetrap正在寻找[email protected]，但没有找到它.相反，它正在查找@ react17.0.1，这是一个较新的版本.出于某种原因，捕鼠器不喜欢这个较新的版本，并且您会收到通知(虽然没什么大不了，但是他们认为值得停止构建).
First, what's happening: react-hook-mousetrap is looking for [email protected], but it is not finding it. Instead it is finding @react17.0.1, which is a newer version. For some reason mousetrap doesn't like this newer version, and you are being notified (it is not a big deal, but they decided it was worth stopping your build).
一种解决方案::强制安装捕鼠器想要的特定版本的反应:
One solution: forcibly install the specific version of react that mousetrap wants:
yarn install [email protected]
这是将您的反应版本回滚到与捕鼠器兼容的稍旧版本.您不会注意到任何区别，在以后的迭代中，希望更新了捕鼠器，所以这会消失.
What this does is roll back your react version to a slightly older one that is compatible with mousetrap. You won't notice any difference, and in future iterations, hopefully mousetrap is updated, so this goes away.
另一种解决方案:做出彻底的决定，不安装任何较早版本的依赖项:
Another solution: make a sweeping decision to not install any older version dependencies:
npm install xxxx --legacy-peer-deps
这是忽略此程序包的旧依赖性.它更全面，可以为您做出很多决定.
What this does is ignore old dependencies for this package. It is more comprehensive, and makes a lot of the decisions for you.
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