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Javascript dependency management : npm vs bower vs volo? [closed]

How do you compare npm, bower and volo?

All three can be used to install javascript dependencies for a UI project. I understand npm is more node specific.

So, when to use what?

npm still stands distant, but bower and volo seem to be solving exactly the same problem, although I am not able to draw a line between npm and bower-volo.

Find the version of an installed npm package

How to find the version of an installed node.js/npm package?

This prints the version of npm itself:

npm -v <package-name>

This prints a cryptic error:

npm version <package-name>

This prints the package version on the registry (i.e. the latest version available):

npm view <package-name> version

How do I get the installed version?

Why does npm install say I have unmet dependencies?

I have a node package. When I run npm install from the package root, it installs a bunch of things, but then prints several error messages that look like this:

npm WARN unmet dependency /Users/seanmackesey/google_drive/code/explore/generator/node_modules/findup-sync/node_modules/glob requires graceful-fs@'~1.2.0' but will load

I must be confused about what exactly npm install does. If it detects a dependency, shouldn't it install it? Under what conditions does it give me error messages like this, and how can I resolve the dependencies?

What is the difference between Bower and npm?

What is the fundamental difference between Bower and NPM? Just want something plain and simple. I've seen some of my colleagues use Bower and NPM interchangeably in their projects.

Difference between tilde(~) and caret(^) in package.json

After I upgraded to latest stable node and npm, I tried npm install moment --save. It saves the entry in the package.json with the caret(^) prefix. Previously, it was a tilde(~) prefix.

1. Why are these changes made in npm?
2. What is the difference between tilde(~) and caret(^)?
3. What is the advantages over others?

NPM throws error without sudo

I just installed node and npm through the package on nodejs.org and whenever I try to search or install something with npm it throws the following error, unless I sudo the command. I have a feeling this is a permissions issue? I am already the admin.

npm ERR! Error: EACCES, open '/Users/chietala/.npm/-/all/.cache.json'
npm ERR!  { [Error: EACCES, open '/Users/chietala/.npm/-/all/.cache.json']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/Users/chietala/.npm/-/all/.cache.json' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 12.2.0
npm ERR! command "node" "/usr/local/bin/npm" "search" "bower"
npm ERR! cwd /Users/chietala
npm ERR! node -v v0.10.4
npm ERR! npm -v 1.2.18
npm ERR! path /Users/chietala/.npm/-/all/.cache.json
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, open '/Users/chietala/.npm/-/all/.cache.json'
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/chietala/npm-debug.log
npm ERR! not ok code 0

How do I update each dependency in package.json to the latest version?

I copied package.json from another project and now want to bump all of the dependencies to their latest versions since this is a fresh project and I don't mind fixing something if it breaks.

What's the easiest way to do this?

The best way I know of now is to run npm info express version then update package.json manually for each one. There must be a better way.

{
  "name": "myproject",
  "description": "my node project",
  "version": "1.0.0",
  "engines": {
    "node": "0.8.4",
    "npm": "1.1.65"
  },
  "private": true,
  "dependencies": {
    "express": "~3.0.3", // how do I get these bumped to latest?
    "mongodb": "~1.2.5",
    "underscore": "~1.4.2",
    "rjs": "~2.9.0",
    "jade": "~0.27.2",
    "async": "~0.1.22"
  }
}

Edit 12/1/14: I am now a collaborator on npm-check-updates, which is a great solution to this problem.

Edit 8/9/15: I have been actively maintaining npm-check-updates for the last 8 months. v2 was released just a few weeks ago, containing a simplified output and many bug fixes and new options. Enjoy.

NPM - How to fix "No readme data"

I have a simple package.json:

{
  "name": "camapaign",
  "version": "0.0.1",
  "scripts": {
    "start": "node app.js"
  },
  "engines": {
    "node": "0.10.15",
    "npm": "1.3.5"
  },
  "repository": { 
    "type": "svn",
    "url": ""
  }
}

When I execute "npm install" i get the following warning which I would like to fix:

"npm WARN package.json camapaign@0.0.1 No readme data."

I have tried adding "README.md" & "readme.txt" to the same dir as the package but with no joy. What am I missing?

How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)

My version of node is always v0.6.1-pre even after I install brew node and NVM install v0.6.19.

My node version is:

node -v
v0.6.1-pre

NVM says this (after I install a version of node for the first time in one bash terminal):

nvm ls
v0.6.19
current:    v0.6.19

But when I restart bash, this is what I see:

nvm ls
v0.6.19
current:    v0.6.1-pre
default -> 0.6.19 (-> v0.6.19)

So where is this phantom node 0.6.1-pre version and how can I get rid of it? I'm trying to install libraries via NPM so that I can work on a project.

I tried using BREW to update before NVM, using "brew update" and "brew install node". I've tried deleting the "node" directory in my /usr/local/include and the "node" and "node_modules" in my "/usr/local/lib". I've tried uninstalling npm and reinstalling it following these instructions.

All of this because I was trying to update an older version of node to install the "zipstream" library. Now there's folders in my users directory, and the node version STILL isn't up to date, even though NVM says it's using 0.6.19.

Ideally, I'd like to uninstall nodejs, npm, and nvm, and just reinstall the entire thing from scratch on my system.

npm WARN package.json: No repository field

I installed expressjs with the following command:

sudo npm install -g express

I have the following warning:

npm WARN package.json range-parser@0.0.4 No repository field.
npm WARN package.json fresh@0.1.0 No repository field.
npm WARN package.json methods@0.0.1 No repository field.
npm WARN package.json methods@0.0.1 No readme data.
npm WARN package.json cookie-signature@1.0.1 No repository field.
npm WARN package.json send@0.1.0 No repository field.
npm WARN package.json pause@0.0.1 No repository field.
npm WARN package.json bytes@0.2.0 No repository field.
npm WARN package.json github-url-from-git@1.1.1 No repository field.
npm WARN package.json assert-plus@0.1.2 No repository field.
npm WARN package.json ctype@0.5.2 No repository field.

Im new to nodejs and expressjs. Why I have the above warnings? Should I be worried?

Is there a way to automatically build the package.json file for Node.js projects

Is package.json supposed to be manually edited? Couldn't a program like npm just look through the files, see the "require" statements, and then use that to put the necessary entries in the package.json file? Are there any programs like that?

how to uninstall npm modules in node js?

As commonly known, any npm module can be installed by running a simple command: npm install <module_name>.

I have installed a few modules that I do not use anymore and I just want to get them off. I have a few questions regarding this:

• Do we have any command or process to uninstall a module from the root (something like npm uninstall <module_name>) or will simply removing the module files do?

• How does it affect us if we keep the unused modules?

"message failed to fetch from registry" while trying to install any module

I can't install any node module from the npm.

npm install socket.io

The above command resulted to below output, it is not able to install socket.io

npm http GET https://registry.npmjs.org/socket.io

npm ERR! Error: failed to fetch from registry: socket.io
npm ERR!     at /opt/node0610/lib/node_modules/npm/lib/utils/npm-registry-client/get.js:139:12
npm ERR!     at cb (/opt/node0610/lib/node_modules/npm/lib/utils/npm-registry-client/request.js:32:9)
npm ERR!     at Request._callback (/opt/node0610/lib/node_modules/npm/lib/utils/npm-registry-client/request.js:137:18)
npm ERR!     at Request.callback (/opt/node0610/lib/node_modules/npm/node_modules/request/main.js:109:22)
npm ERR!     at Request.<anonymous> (/opt/node0610/lib/node_modules/npm/node_modules/request/main.js:198:58)
npm ERR!     at Request.emit (events.js:88:20)
npm ERR!     at ClientRequest.<anonymous> (/opt/node0610/lib/node_modules/npm/node_modules/request/main.js:195:10)
npm ERR!     at ClientRequest.emit (events.js:67:17)
npm ERR!     at CleartextStream.<anonymous> (http.js:1134:11)
npm ERR!     at CleartextStream.emit (events.js:67:17)
npm ERR! You may report this log at:
npm ERR!     <http://github.com/isaacs/npm/issues>
npm ERR! or email it to:
npm ERR!     <npm-@googlegroups.com>
npm ERR! 
npm ERR! System Linux 2.6.18-194.el5
npm ERR! command "node" "/opt/node0610/bin/npm" "install" "socket.io"
npm ERR! cwd /opt/node0610/lib/node_modules
npm ERR! node -v v0.6.10
npm ERR! npm -v 1.1.0-3
npm ERR! message failed to fetch from registry: socket.io
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /opt/node0610/lib/node_modules/npm-debug.log
npm not ok

My NPM Version is :

[applmgr@dev node_modules]$ npm --version
1.1.0-3

My NodeJS Version is :

[applmgr@dev node_modules]$ node --version
v0.6.10

Cannot install packages using node package manager in Ubuntu

NodeJS interpreter name(node) on Ubuntu has been renamed to nodejs because of name conflict with another package. Here's what the readme.debian says:

The upstream name for the Node.js interpreter command is "node". In Debian the interpreter command has been changed to "nodejs".

This was done to prevent a namespace collision: other commands use the same name in their upstreams, such as ax25-node from the "node" package.

Scripts calling Node.js as a shell command must be changed to instead use the "nodejs" command.

However, using nodejs mucks up installing packages using npm. Package installation fails with the following error:

sh: 1: node: not found
npm WARN This failure might be due to the use of legacy binary "node"
npm WARN For further explanations, please read /usr/share/doc/nodejs/README.Debian

How do I make npm understand that nodejs is already installed on the system but the interpreter name is different?

How do you install "development only" NPM modules for Node.js (package.json)?

I have this in my package.json file (shortened version):

{
  "name": "a-module",
  "version": "0.0.1",
  "dependencies": {
    "coffee-script":      ">= 1.1.3"
  },
  "devDependencies": {
    "stylus":             ">= 0.17.0"
  }
}

I am using NPM version 1.1.1 on Mac 10.6.8.

When I run the following command from the project root, it installs both the dependencies and devDependencies:

npm install

I was under the impression that this command installed the devDependencies:

npm install --dev

How do I make it so npm install only installs dependencies (so production environment only gets those modules), while something like npm install --dev installs both dependencies and devDependencies?