kumatch/Gruntfile.js

## baz.js
var format = require('util').format;

module.exports = function (v) {
    if (typeof v === "string") {
        return format('%s OK.', v);
    } else if (typeof v === "number") {
        return v * 10;
    } else {
        return v;
    }
};

## foo.js
var async = require('async');
var baz = require('./bar/baz');

exports.run = function (values, callback) {
    async.map(values, function (v, next) {
        next(null, baz(v));
    }, callback);
};

## Gruntfile.js
module.exports = function(grunt) {
    var pkg = grunt.file.readJSON('package.json');

    grunt.initConfig({
        browserify: {
            dist: {
                src: 'main.js',
                dest: 'build.js'
            }
        }
    });

    Object.keys(pkg.devDependencies).forEach(function (devDependency) {
        if (devDependency.match(/^grunt\-/)) {
            grunt.loadNpmTasks(devDependency);
        }
    });

    grunt.registerTask('default', [ 'browserify' ]);
};

## index.html
<html>
<head>
</head>
<body>
<div id="content"></div>
<script src="build.js"></script>
</body>
</html>

## main.js
var foo = require('./lib/foo.js');
var content = document.getElementById('content');

foo.run([ 3, 10, "foo", "bar", 42 ], function (err, results) {
    if (err) throw err;

    results.forEach(function (r) {
        content.innerHTML += ' ' + r;
    });
});

## package.json
{
  "private": true,
  "dependencies": {
    "async": "0.2.9"
  },
  "devDependencies": {
    "grunt": "~0.4",
    "grunt-browserify": "*"
  },
  "optionalDependencies": {},
  "engines": {
    "node": ">= 0.8.0"
  }
}

## tree
@ /
├─ Gruntfile.js
├─ package.json
├─ index.html
├─ main.js
└┬ lib/
  ├─ foo.js
  └┬ bar/
    └─ baz.js
	var format = require('util').format;

	module.exports = function (v) {
	if (typeof v === "string") {
	return format('%s OK.', v);
	} else if (typeof v === "number") {
	return v * 10;
	} else {
	return v;
	}
	};
	var async = require('async');
	var baz = require('./bar/baz');

	exports.run = function (values, callback) {
	async.map(values, function (v, next) {
	next(null, baz(v));
	}, callback);
	};
	module.exports = function(grunt) {
	var pkg = grunt.file.readJSON('package.json');

	grunt.initConfig({
	browserify: {
	dist: {
	src: 'main.js',
	dest: 'build.js'
	}
	}
	});

	Object.keys(pkg.devDependencies).forEach(function (devDependency) {
	if (devDependency.match(/^grunt\-/)) {
	grunt.loadNpmTasks(devDependency);
	}
	});

	grunt.registerTask('default', [ 'browserify' ]);
	};
	<html>
	<head>
	</head>
	<body>
	<div id="content"></div>
	<script src="build.js"></script>
	</body>
	</html>
	var foo = require('./lib/foo.js');
	var content = document.getElementById('content');

	foo.run([ 3, 10, "foo", "bar", 42 ], function (err, results) {
	if (err) throw err;

	results.forEach(function (r) {
	content.innerHTML += ' ' + r;
	});
	});
	{
	"private": true,
	"dependencies": {
	"async": "0.2.9"
	},
	"devDependencies": {
	"grunt": "~0.4",
	"grunt-browserify": "*"
	},
	"optionalDependencies": {},
	"engines": {
	"node": ">= 0.8.0"
	}
	}
	@ /
	├─ Gruntfile.js
	├─ package.json
	├─ index.html
	├─ main.js
	└┬ lib/
	├─ foo.js
	└┬ bar/
	└─ baz.js