How to install doctorjs/jsctags on Windows (for Vim)

This is a short guide that explains how I  installed doctorjs aka jsctags on my Windows 7 machine.

node.js Installation
First we have to get a working node.js binary. You can find a precompiled node.exe file in the apropriate  folder under http://nodejs.org/dist/ . At the time of this writing the newest version is 0.5.10, so I used the following address: http://nodejs.org/dist/v0.5.10/node.exe

Clone doctorjs repository
Now get the newest version of doctorjs by cloning the repository with git. I used Git for Windows (portable version) for this. To clone it use the following command:

F:\> git clone --recursive https://github.com/mozilla/doctorjs.git

Alternatively, github provides a packed zip file of the repo.

Test run
Open up the command line and navigate to the folder where you saved node.exe (F:\nodejs in my case).
Use the following command to set the environment variable NODE_PATH in this test session:

F:\nodejs> set NODE_PATH=F:\doctorjs\lib\jsctags  

This is necessary because otherwise it's not possible for node.js to locate the required libraries to run doctorjs:
Finally we can test our setup:

F:\nodejs> node.exe F:\doctorjs\bin\jsctags.js -h

Vim and tagbar plugin
I created an batch file jsctags.bat that basically executes these steps above.

	@echo off
	::------------------------------------------------------------------------------
	:: Path to node.exe
	set nodejs_exe=F:\nodejs\node.exe
	:: Path to doctorjs installation directory
	set doctorjs_install=F:\doctorjs
	::------------------------------------------------------------------------------
	set NODE_PATH=%doctorjs_install%\lib\jsctags
	%nodejs_exe% %doctorjs_install%\bin\jsctags.js %*

view raw jsctags.bat hosted with ❤ by GitHub

With this script it is possible to use the tagbar plugin for Vim (or any other plugin generating tag files via jsctags).  As a last step we add the path of the directory containing jsctags.bat to the environment variable PATH. To do so, add something like the next line to your _vimrc configuration file:

let $PATH = 'F:\jsctags;' . $PATH

Done!