--bootstrap
--css
--js
---libs

localhost/:8 GET http://localhost:3000/bootstrap/css/bootstrap.min.css
localhost/:9 GET http://localhost:3000/css/template.css
localhost/:11 GET http://localhost:3000/js/libs/jquery%201.12.5-pre.js
localhost/:12 GET http://localhost:3000/bootstrap/js/bootstrap.min.js
localhost/:14 GET http://localhost:3000/js/libs/angular.min.js
localhost/:15 GET http://localhost:3000/js/libs/angular-route.min.js
localhost/:16 GET http://localhost:3000/js/libs/angular-resource.min.js
localhost/:17 GET http://localhost:3000/js/libs/angular-cookies.min.js
localhost/:19 GET http://localhost:3000/js/app.js
localhost/:20 GET http://localhost:3000/js/controllers.js
localhost/:21 GET http://localhost:3000/js/directives.js 404 (Not Found)

var express = require("express");
var app = express();

app.use(express.static('TestApp'));
app.use(express.static(__dirname + '/TestApp'));

app.get('/', function(req,res) {
    res.sendFile(__dirname + '/index.html');
});

var server = app.listen(3000, function() {
    console.log('working on', server.address().port);
});

app.get('*', function(req,res) {
    res.sendFile(__dirname + '/index.html');
});

app.use(express.static('TestApp'));

node_modules/
static/
    bootstrap/
    css/
    js/
        libs/
    index.html
server.js

var express = require("express");
var app = express();

app.use(express.static('static'));

var server = app.listen(3000, function() {
    console.log('working on', server.address().port);
});