gulpfile.js

'use strict';
var gulp = require('gulp');
var mocha = require('gulp-mocha');
var eslint = require('gulp-eslint');

gulp.task('test', function() {
  return gulp.src('./test/test.js', {read: false})
  .pipe(mocha());
});

gulp.task('lint', function () {
  // ESLint ignores files with "node_modules" paths.
  // So, it's best to have gulp ignore the directory as well.
  // Also, Be sure to return the stream from the task;
  // Otherwise, the task may end before the stream has finished.
  return gulp.src(['**/*.js','!node_modules/**', '!public/**'])
  // eslint() attaches the lint output to the "eslint" property
  // of the file object so it can be used by other modules.
  .pipe(eslint())
  // 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 failAfterError last.
  // .pipe(eslint.failAfterError());
});