When I insert "brk" in the nodemon --debug-brk app.js command, my server won't start.

$ nodemon --debug app.js
[nodemon] 1.11.0
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node --debug app.js`
Debugger listening on port 5858
Express server is running...

$ node-inspector
Node Inspector v0.12.8
Visit http://127.0.0.1:8080/?port=5858 to start debugging.

$ nodemon --debug-brk app.js
[nodemon] 1.11.0
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node --debug-brk app.js`
Debugger listening on port 5858

'use strict';

var express = require('express'),
    posts = require('./mock/posts.json');

var app = express();

app.get('/', function(req, res) {
  res.send("<h1>My Express App!</h1>");
});

app.get('/blog/:title', function(req, res) {
  debugger;
  var title = req.params.title;
  var post = posts[title];
  res.send(post);
});

app.listen(3000, function() {
  console.log("Express server is running...");
});