Gulp comparison examples

Gruntfile_1.js

module.exports = function(grunt) {
  grunt.initConfig({
    concat: {
      'dist/all.js': ['src/*.js']
    },
    uglify: {
      'dist/all.min.js': ['dist/all.js']
    },
    jshint: {
      files: ['gruntfile.js', 'src/*.js']
    },
    watch: {
      files: ['<%= jshint.files =>'],
      tasks: ['jshint', 'concat', 'uglify']
    }
  });
 
 
  // Load Our Plugins
  grunt.loadNpmTasks('grunt-contrib-jshint');
  grunt.loadNpmTasks('grunt-contrib-concat');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-watch');
 
 
  // Register Default Task
  grunt.registerTask('default', ['jshint', 'concat', 'uglify']);
};

gulpfile_1.js

var gulp = require('gulp');
var jshint = require('gulp-jshint');
var concat = require('gulp-concat');
var rename = require('gulp-rename');
var uglify = require('gulp-uglify');
 
// Lint JS
gulp.task('lint', function() {
  gulp.src('./src/*.js')
    .pipe(jshint())
    .pipe(jshint.reporter('default'));
});
 
// Concat & Minify JS
gulp.task('minify', function(){
    gulp.src('./src/*.js')
        .pipe(concat('all.js'))
        .pipe(gulp.dest('./dist'))
        .pipe(rename('all.min.js'))
        .pipe(uglify())
        .pipe(gulp.dest('./dist'));
});
 
// Default
gulp.task('default', function(){
  gulp.run('lint', 'minify');
 
  // Watch JS Files
  gulp.watch("./src/*.js", function(event){
    gulp.run('lint', 'minify');
  });
});

gulpfile_2.js

// Include gulp
var gulp = require('gulp'); 

// Include Our Plugins
var jshint = require('gulp-jshint');
var sass = require('gulp-sass');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var rename = require('gulp-rename');

// Lint Task
gulp.task('lint', function() {
    gulp.src('./js/*.js')
        .pipe(jshint())
        .pipe(jshint.reporter('default'));
});

// Compile Our Sass
gulp.task('sass', function() {
    gulp.src('./scss/*.scss')
        .pipe(sass())
        .pipe(gulp.dest('./css'));
});

// Concatenate & Minify JS
gulp.task('scripts', function() {
    gulp.src('./js/*.js')
        .pipe(concat('all.js'))
        .pipe(gulp.dest('./dist'))
        .pipe(rename('all.min.js'))
        .pipe(uglify())
        .pipe(gulp.dest('./dist'));
});

// Default Task
gulp.task('default', function(){
    gulp.run('lint', 'sass', 'scripts');

    // Watch For Changes To Our JS
    gulp.watch('./js/*.js', function(){
        gulp.run('lint', 'scripts');
    });

    // Watch For Changes To Our SCSS
    gulp.watch('./scss/*.scss', function(){
        gulp.run('sass');
    });
});