npm.vim makes it easy to run npm commands from Vim. It doesn't have any interesting features like errorlist integration yet.
For Vim version 7.x.
Download npm.vim.zip from vim.org.
unzip npm.vim.zip
cp npm.vim.zip/doc/npm.txt ~/.vim/doc/
cp npm.vim.zip/plugin/npm.vim ~/.vim/plugin/
As usual, to build help:
:helptags ~/.vim/doc
##Global Commands
:Npm <command> [options..]
Calls npm <command> [options]
. Commands can be tab-completed.
##Global Settings
g:npm_background = 0
If set to non-zero, runs all commands in background (so you lose their output).
g:npm_custom_commands = []
If some NPM commands aren't being picked up, add them to this list.
g:npm_load_commands = 0
If set to non-zero, commands for tab completion are loaded at startup rather than the first time completion is needed.
##License
npm.vim is released under the MIT license. See the comments at the head of npm.vim for the full license text, or the "COPYING" file you should have received with your copy of this software.