gulpfile.js

/*eslint-env node */
'use strict';

var gulp = require('gulp'),
eslint = require('gulp-eslint');

gulp.task('lint', function (){
  // Note: To have the process exit with an error code (1) on
  //  lint error, return the stream and pipe to failOnError last.
  return gulp.src([
    './lib/job.js',
    './lib/queue.js',
    './lib/timer-manager.js',
    './test/**'
    ])
    .pipe(eslint({
      rules: {
            'space-after-keywords': [2, 'never'],
            indent: [2, 2],
            'valid-jsdoc': 0,
            'func-style': 0,
            'no-use-before-define': 0,
            camelcase: 1,
            'no-unused-vars': 1,
            'no-alert': 1,
            'no-console': 1,
            'quotes': [2, "single"],
            'no-underscore-dangle': 0
        },
        globals: {
          'define': true,
          'describe': true,
          'it': true,
          'setTimeout': true,
          'after': true,
          'afterEach': true,
          'beforeEach': true,
          'before': true
        }
    }))
    .pipe(eslint.format())
    .pipe(eslint.failAfterError());
});

gulp.task('default', ['lint'], function (){
  // This will only run if the lint task is successful...
});