Gruntjs grunt：如何检测文件是否保存到我所有的js文件

我试图检测是否有一些js被保存到我的js文件或css文件中

我在GruntFile.js中有以下代码：

/// <binding ProjectOpened='uglify' />
module.exports = function (grunt) {
    grunt.initConfig({

        uglify: {
            bundle: {
                files: { 'Scripts/boooo.min.js': 'Scripts/bootstrap.js' }
            }
        },
        watch: {
            js: {
                files: ['Scripts/**/*.js'],
                tasks: ['uglify']
            }
        }
    });

    // Next one would load plugins
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-watch');


    // Here is where we would define our task
    grunt.registerTask('default', ['watch:js']);


};  

如何检测它是否已保存

module.exports = function (grunt) {
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        watch: {
            scripts: {
                files: ['scripts/**/*.js'],
                tasks: ['uglify']
            }
        },
        uglify: {
            my_target: {
                options: {
                    beautify: false
                },
                files: {
                    '/Scripts/app.min.js': ['scripts/**/*.js']
                }
            }
        }
    });

    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-uglify');

    grunt.registerTask('default', ['uglify:my_target', 'watch']);
};

module.exports = function (grunt) {
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        watch: {
            scripts: {
                files: ['scripts/**/*.js'],
                tasks: ['uglify']
            }
        },
        uglify: {
            my_target: {
                options: {
                    beautify: false
                },
                files: {
                    '/Scripts/app.min.js': ['scripts/**/*.js']
                }
            }
        }
    });

    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-uglify');

    grunt.registerTask('default', ['uglify:my_target', 'watch']);
};