html-help is a really simple interface to the HtmlHelp
Windows API function.
At the moment it only supports the HH_DISPLAY_TOPIC and HH_DISPLAY_INDEX commands.
Usage:
var HtmlHelp = require('html-help');
var hh = new HtmlHelp('my_help_file.chm');
hh.displayTopic('some/topic.htm');
hh.displayIndex('an optional search term');