grunt-concurrent with nodemon and watch

Gruntfile.js

/* globals module */

module.exports = function(grunt) {

    // Project configuration.
    grunt.initConfig({
    
    
        watch: {
            gruntfile: {
                files: '<%= jshint.gruntfile.src %>',
                tasks: ['jshint:gruntfile']
            },
            sass: {
                files: ['src/scss/**/*.scss'],
                tasks: ['sass']
            },
            js: {
                files: ['src/js/**/*.js'],
                tasks: ['uglify']
            }
        },
        
        
        nodemon: {
            dev: {
                script: 'server.js',
                options: {
                    ext: '*',
                    watch: ['app'],
                    env: {
                        NODE_ENV: "development",
                        NODE_PORT: "8000",
                        NODE_IP: "0.0.0.0"
                    },
                    callback: function (nodemon) {
                        nodemon.on('log', function (e) {
                            grunt.log.writeln(e.colour);
                        });

                        nodemon.on('restart', function () {
                            grunt.log.subhead('Running compile task ... ');
                            grunt.util.spawn({
                                grunt: true,
                                args: ['sass', 'uglify', 'copy-static'],
                            }, function(err, result) {
                                grunt.log.debug(result.toString());
                                if (err || result.code !== 0) {
                                    grunt.log.write('Error while compiling')
                                             .error()
                                             .error(err);
                                }
                                grunt.log.subhead('Compile task: \u001b[32mOK\u001B[0m');
                            });
                        });
                    }
                }
            }
        },
        
        
        concurrent: {
            std: {
                tasks: ['watch', 'nodemon:dev'],
                options: {
                    logConcurrentOutput: true
                }
            }
        }
        
        
        
    grunt.registerTask('copy-static', ['copy:imgs']);
    grunt.registerTask('server',
        [
            'copy-static',
            'sass',
            'uglify',
            'concurrent:std'
        ]
    );
    
  
};