jshint code coverage

gistfile1.js

#!/usr/bin/env node

(function () {
    "use strict";
    
    var coveraje = require("coveraje").coveraje,
        fs = require("fs"),
        path = require("path"),
        jshfilePath = path.resolve("../jshint.js");
        
    fs.readFile(jshfilePath, 'utf-8', function (err, data) {
        function runTests(file) {
            return function (context) {
                // hack: set cache value
                require.cache[jshfilePath] = {
                    id: jshfilePath,
                    exports: context,
                    loaded: true
                };
                
                return coveraje.runHelper("expresso").run(file);
            };
        }
        
        if (err) throw err;
        
        var tests = {};
        
        fs.readdir('./', function (err, files) {
            files.forEach(function (f) {
                if (f.length > 2 && f.substr(f.length - 3, 3) === ".js") {
                    tests[f] = runTests('./' + f);
                }
            });
        
            coveraje.cover(data, tests, {
                useServer: true
            });
        });
    });
    
    return this;
}());

Get https://github.com/coveraje/coveraje
don't forget the submodules
add it to node_modules
Add this gist into ./tests folder of jshint and run it... ;)

Alternative

// move to projects folder
git clone git://github.com/coveraje/coveraje.git
cd coveraje
git submodule update --init
npm link

Add this gist into ./tests folder of jshint and run it.