'npm 是否安装'l<package_name> 安装一个package的最新版本还是安装最新版本的node兼容？</package_name>
[英]Does 'npm instal'l <package_name> install the latest version of a package or the latest compatible with the version of node installed?
问题描述
Does npm install <package_name> install the latest version of a package or the latest compatible with the version of node installed? 
npm install <package_name>是否安装最新版本的 package 或与安装的节点版本兼容的最新版本？
What will happen in these 2 cases?这两种情况会发生什么？
Case 1: Node version in the directory is 10.16.0.案例1：目录中的节点版本为10.16.0。 Will 'npm install xyz' install the latest xyz or the latest compatible version with 10.16.0? 'npm install xyz' 会安装最新的 xyz 还是与 10.16.0 兼容的最新版本？
Case 2: Node version in the directory is 10.16.0 Will 'npm install -g xyz' install the latest xyz or the latest compatible with the version of node installed globally OR will it consider 10.16.0?案例2：目录中的节点版本是10.16.0 'npm install -g xyz'会安装最新的xyz还是与全局安装的节点版本兼容的最新版本，还是会考虑10.16.0？
2 个解决方案
解决方案1
2 2021-06-04 01:22:34
Answer Latest Version HOWEVER回答最新版本但是
If the package is already installed in a project or contained within the package.json file, then the version string Is what NPM will try and use, Which may contain a Caret(^) which tells npm Not to update the Major Version. If the package is already installed in a project or contained within the package.json file, then the version string Is what NPM will try and use, Which may contain a Caret(^) which tells npm Not to update the Major Version.
For more info read below欲了解更多信息，请阅读下文
Npm install will always install the latest Full Release build of the package (Skips -tag.x versions) unless manually specified, which can potentially be incompatible with some versions of node.除非手动指定，否则 Npm 安装将始终安装 package 的最新完整版本版本（跳过-tag.x版本），这可能与某些版本的节点不兼容。 Not all packages specify the engine it is compatible with so sometimes you have to do some digging or trial and error.并非所有软件包都指定了它兼容的引擎，因此有时您必须进行一些挖掘或反复试验。
You can Manually select a version by adding @ to the package.您可以通过在 package 中添加@来手动 select 版本。
For instance, npm install xyz@10.16.0 will install that specific package version.例如， npm install xyz@10.16.0将安装特定的 package 版本。 You can also prefix a version number with a caret (^) to install the latest Minor build, or a tilde (~) to specify the latest patch version.您还可以在版本号前加上插入符号 (^) 以安装最新的 Minor 版本，或使用波浪号 (~) 指定最新的补丁版本。 For example xyz@^1.2.0 could install say 1.8.0, and xyz@~1.2.0 could install 1.2.9, but Never 1.3.0例如 xyz@^1.2.0 可以安装 1.8.0，xyz@~1.2.0 可以安装 1.2.9，但从不安装 1.3.0
For more info on versioning strings read up on Semantic Versioning aka SemVer有关版本控制字符串的更多信息，请阅读 Semantic Versioning aka SemVer
https://github.com/npm/node-semver#versions https://github.com/npm/node-semver#versions
解决方案2
0 2021-06-04 14:27:20
I'm not sure BUT if you already have installed xyz with -g flag it will not install latest version.我不确定但如果您已经使用 -g 标志安装了 xyz，它将不会安装最新版本。
try
npm uninstall -g xyz
then
npm install xyz
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