Grunt won't load the node server - node.js

Question

My gruntfile.js is:
'use strict';
module.exports = function(grunt) {
// Project Configuration
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
watch: {
jade: {
files: ['app/views/**'],
options: {
livereload: true,
},
},
js: {
files: ['gruntfile.js', 'server.js', 'app/**/*.js', 'public/js/**', 'test/**/*.js'],
tasks: ['jshint'],
options: {
livereload: true,
},
},
html: {
files: ['public/views/**'],
options: {
livereload: true,
},
},
css: {
files: ['public/css/**'],
options: {
livereload: true
}
}
},
jshint: {
all: {
src: ['gruntfile.js', 'server.js', 'app/**/*.js', 'public/js/**', 'test/**/*.js'],
options: {
jshintrc: true
}
}
},
nodemon: {
dev: {
options: {
file: 'server.js',
args: [],
ignoredFiles: ['public/**'],
watchedExtensions: ['js'],
nodeArgs: ['--debug'],
delayTime: 1,
env: {
PORT: 3000
},
cwd: __dirname
}
}
},
concurrent: {
tasks: ['nodemon', 'watch'],
options: {
logConcurrentOutput: true
}
},
mochaTest: {
options: {
reporter: 'spec',
require: 'server.js'
},
src: ['test/mocha/**/*.js']
},
env: {
test: {
NODE_ENV: 'test'
}
},
karma: {
unit: {
configFile: 'test/karma/karma.conf.js'
}
}
});
//Load NPM tasks
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.loadNpmTasks('grunt-mocha-test');
grunt.loadNpmTasks('grunt-karma');
grunt.loadNpmTasks('grunt-nodemon');
grunt.loadNpmTasks('grunt-concurrent');
grunt.loadNpmTasks('grunt-env');
//Making grunt default to force in order not to break the project.
grunt.option('force', true);
//Default task(s).
grunt.registerTask('default', ['jshint', 'concurrent']);
//Test task.
grunt.registerTask('test', ['env:test', 'mochaTest', 'karma:unit']);
};
and when I type grunt, I get:
$ grunt
Running "jshint:all" (jshint) task
>> 69 files lint free.
Running "concurrent:tasks" (concurrent) task
Running "nodemon:dev" (nodemon) task
Running "watch" task
Waiting...
Usually it says Express started on Port 3000, but suddenly it isn't. Not sure what's going on. Any ideas?
When running with the -v flag, I get:
Running tasks: nodemon
Running "nodemon" task
Running "nodemon:dev" (nodemon) task
Verifying property nodemon.dev exists in config...OK
File: [no files]
Options: file="server.js", args=[], ignoredFiles=["public/**"], watchedExtensions=["js"], nodeArgs=["--debug"], delayTime=1, env={"PORT":3000}, cwd="/Users/shamoon/Sites/blocksearcher"
Loading "env.js" tasks...OK
+ env
Loading "gruntfile.js" tasks...OK
+ default, test
Running tasks: watch
Running "watch" task
Waiting...Verifying property watch exists in config...OK
Verifying property watch.jade.files exists in config...OK
Verifying property watch.js.files exists in config...OK
Verifying property watch.html.files exists in config...OK
Verifying property watch.css.files exists in config...OK
Live reload server started on port: 35729
Watching app/views for changes.
Watching app/views/includes for changes.
...

Answer 1

Look at the changelog of grunt-nodemon: https://github.com/ChrisWren/grunt-nodemon#changelog.
You must have update your dependencies recently and grunt-nodemon changed a few properties.
- file is now script
- ignoredFiles -> ignore
- watchedFolders -> watch
- watchedExtensions -> ext

Answer 2

Just change you options.file to script or keep both.
nodemon: {
dev: {
script: 'server.js',
options: {
file: 'server.js',
args: [],
ignoredFiles: ['public/**'],
watchedExtensions: ['js'],
nodeArgs: ['--debug'],
delayTime: 1,
env: {
PORT: 3000
},
cwd: __dirname
}
}
}