tasks/eslint.js
'use strict';
let gulp = require('gulp'),
eslint = require('gulp-eslint');
module.exports = function (gulp, $) {
gulp.task('eslint', function () {
return gulp.src(['**/*.js','!node_modules/**'])
.pipe(eslint())
.pipe(eslint.format())
.pipe(eslint.failAfterError());
});
};