node.js 节点版本管理器 (NVM) npm 将模块安装到公共文件夹

Node Version Manager (NVM) npm installing modules to common folder

提问by grookle

I've installed NVM for node.js using the instructions from this post:

我已经使用这篇文章中的说明为 node.js 安装了 NVM：

http://www.backdrifter.com/2011/02/18/using-nvm-and-npm-to-manage-node-js/

http://www.backdrifter.com/2011/02/18/using-nvm-and-npm-to-manage-node-js/

When I switch between node versions and then use npm to install a module, all the modules are placed in the same 'node_modules' folder (~/node_modules/) instead of in the 'node_modules' directory specific to that version of node?

当我在节点版本之间切换然后使用 npm 安装模块时，所有模块都放置在同一个“node_modules”文件夹（~/node_modules/）中，而不是特定于该版本节点的“node_modules”目录中？

Any idea on how to remedy this?

关于如何解决这个问题的任何想法？

回答by Jesse Vogt

Based on the comments from https://github.com/creationix/nvm/pull/97:

基于来自https://github.com/creationix/nvm/pull/97的评论：

When installing packages with npm using the global switch -g the package ends up in the proper directory (i.e. .nvm/$VERSION/lib/node_modules), however node is unable to require it since it somehow isn't searching on it's prefix.

当使用全局开关 -g 使用 npm 安装包时，包最终位于正确的目录中（即 .nvm/$VERSION/lib/node_modules），但是 node 无法要求它，因为它不知何故没有搜索它的前缀。

So using npm install -g xxxxxwill put the modules in the correct location for NVM but if you try to requireone of them node can't find the module. I am still playing around with this and will update if I find a solution.

因此，使用npm install -g xxxxx会将模块放在 NVM 的正确位置，但如果您尝试使用require其中之一，节点将找不到该模块。我仍在玩这个，如果我找到解决方案，我会更新。

Update

更新

Where does NPM put node_modules? (see https://docs.npmjs.com/files/folders)

NPM 把 node_modules 放在哪里？（见https://docs.npmjs.com/files/folders）

• Local install (default): puts stuff in ./node_modules of the current package root.
• Global install (with -g): puts stuff in /usr/local or wherever node is installed.
• Install it locally if you're going to require()it.
• Install it globally if you're going to run it on the command line.
• If you need both, then install it in both places, or use npm link.

• 本地安装（默认）：将东西放在当前包根目录的 ./node_modules 中。
• 全局安装（使用 -g）：将东西放在 /usr/local 或安装节点的任何地方。
• 如果您要使用require()它，请在本地安装它。
• 如果要在命令行上运行它，请全局安装它。
• 如果两者都需要，则在两个地方都安装它，或者使用npm link.

So what I did was run npm init(see http://npmjs.org/doc/init.html) in my projects root dir which generated package.json. Now when I run npm install xxxxxit creates a node_modules dir in my project folder (which I add to my .gitignore). This works for modules that I require in my code.

所以我所做的是在我的项目根目录中运行npm init（参见http://npmjs.org/doc/init.html），它生成了 package.json。现在，当我运行npm install xxxxx它时，它会在我的项目文件夹中创建一个 node_modules 目录（我将其添加到我的 .gitignore 中）。这适用于我在代码中需要的模块。

For commands such as CoffeeScript I install with npm install -g coffee-scriptwhich puts it in the correct directory (.nvm/$VERSION/lib/node_modules). While I can't require these modules (npm link should solve this problem) I can run the commands - i.e. coffee.

对于诸如 CoffeeScript 之类的命令，我安装时npm install -g coffee-script会将其放在正确的目录 (.nvm/$VERSION/lib/node_modules) 中。虽然我不能要求这些模块（npm link 应该可以解决这个问题），但我可以运行命令 - 即coffee.

回答by Gisael Gustavo Gómez González

I just installed express globally (-g) and was having problem when require("express"). Just like Jesse Vogt said I just reinstalled express but this time without the -g just like this: "sudo npm install express" and now is working perfectly!

我刚刚全局安装了 express (-g) 并且在 require("express") 时遇到了问题。就像 Jesse Vogt 说的那样，我刚刚重新安装了 express，但这次没有 -g 就像这样：“sudo npm install express”，现在运行良好！