gulpfile.js

const eslint = require('gulp-eslint');
var gulp        = require('gulp');
var browserSync = require('browser-sync').create();

// Static server
gulp.task('browser-sync', function() {
    browserSync.init({
        server: {
            baseDir: "",
            directory: true
        }
    });
});

gulp.task('eslint', function () {
    return gulp.src([
'src/**/*.js*'

                     ])
        // eslint() attaches the lint output to the eslint property 
        // of the file object so it can be used by other modules. 
        .pipe(eslint({
			// Load a specific ESLint config
			configFile: '.eslintrc.json'
		}))
        // eslint.format() outputs the lint results to the console. 
        // Alternatively use eslint.formatEach() (see Docs). 
        .pipe(eslint.format())
        // To have the process exit with an error code (1) on 
        // lint error, return the stream and pipe to failOnError last. 
        .pipe(eslint.failOnError());
});
gulp.task('default', ['eslint']);