没有使用Gulp任务执行browserSync.reload

Question

I am struggling with a problem on Gulp task for plenty hours. I couldn't figure out how to make it work.

Let me show first my project structure :

project/
|
|-- Gulp/
|   |-- Base/
|       |-- start-server.js
|       |-- sass.js
|           ...
|   |-- Watch/
|       |-- watch-sass.js
|           ...
|   |-- config.js
|       ...
|-- gulpfile.js
|   ...

Also let me show code of each file mentioned in this structure. gulpfile.js

/*jslint node: true */
"use strict";

var requireDir    = require('require-dir'); // Node module to require whole directories

// ***** Require all tasks from Gulp folder *****
requireDir('./Gulp', {
  recurse: true
});

Gulp/ config.js

module.exports = {
  paths: {
    Project: {
      dir:            './',
      src:            './www',
      dist:           './dist'
    },

    HTML: {
      all:            './www/Views/**/**/*.html',
      dir:            './www/Views',
      entry:          './www/Views/index.html'
    },

    Sass: {
      all:            './www/StyleSheets/Sass/**/**/*.scss',
      dir:            './www/StyleSheets/Sass',
      entry:          './www/StyleSheets/Sass/main.scss',
      map:            '../../../dist/maps/sass',
      vendor:         './www/StyleSheets/Sass/Vendor/**/*.scss'
    },

    CSS: {
      all:            './www/StyleSheets/CSS/**/**/*.css',
      dir:            './www/StyleSheets/CSS',
      entry:          './www/StyleSheets/CSS/main.css',
      map:            '../../../dist/maps/css',
      vendor:         './www/StyleSheets/CSS/Vendor/**/*.css'
    },

    JS: {
      all:            './www/JavaScripts/**/**/*.js',
      dir:            './www/JavaScripts',
      entry:          './www/JavaScripts/app.js',
      map:            '../../../dist/maps/js',
      vendor:         './www/JavaScripts/Vendor/**/*.js'
    },
    // ...
  }
};

Gulp/Base/ auto-reload.js

var gulp          = require('gulp'),
    config        = require('../config');

// ********* IMPORTS *********
var browserSync   = require('browser-sync').create();
// ***END*** IMPORTS ***END***

// ***** Start server on localhost for live preview *****
gulp.task('start-server', function () {
  browserSync.init({
    server: {
      baseDir: config.paths.Project.dir
    },
    open: true
  });
});

Gulp/Base/ sass.js

var gulp          = require('gulp'),
    config        = require('../config');

// ********* IMPORTS *********
var sass          = require('gulp-sass'),
    browserSync   = require('browser-sync'),
    notify        = require('gulp-notify'),
    sourceMaps    = require('gulp-sourcemaps');
// ***END*** IMPORTS ***END***

// ***** Sass compiler *****
gulp.task('sass', function () {
  return gulp.src(config.paths.Sass.all)
    .pipe(sourceMaps.init())
    .pipe(sass({
      style: 'compressed'
    }))
    .on("error", notify.onError(function (error) {
      return "Error: " + error.message;
    }))
    .pipe(sourceMaps.write(config.paths.Sass.map))
    .pipe(gulp.dest(config.paths.CSS.dir))
    .pipe(browserSync.reload({
      stream: true
    }));
});

Gulp/Watch/ watch-sass.js

var gulp          = require('gulp'),
    config        = require('../config');

// ********* IMPORTS *********
var browserSync   = require('browser-sync'),
    runSequence   = require('run-sequence');
// ***END*** IMPORTS ***END***

// ***** Gulp watch Sass files *****
gulp.task('watch-sass', ['start-server'], function () {
  gulp.watch(config.paths.Sass.all, ['sass', browserSync.reload]);
});

PROBLEM DESCRIPTION:

In the last file Gulp/Watch/ watch-sass.js the function browserSync.reload doesn't work. the task ' watch-sass ', ' start-server ' and then ' sass ' is working, it executes without problems. However it doesn't auto-refresh page using browserSync.reload after finishing compiling *.scss files and I cannot figure out why. Anyone can help me?

Answer 1

I'm a bit new to gulp, but it looks like you don't have gulp-watch installed or imported. Install/import it.

var watch = require("gulp-watch");

Then replace gulp.watch with watch:

// ***** Gulp watch Sass files *****
gulp.task('watch-sass', ['auto-reload'], function () {
    watch(config.paths.Sass.all, ['sass'], function() {
        browserSync.reload();
    });
});

If not the above, maybe you could compare your code to my gulp files found here: https://github.com/FunkSoulNinja/travel-site

Answer 2

I found out that if I put gulp task ' start-server ' in ' watch-sass.js ' file instead of separating it to his own file, it works.

The code for watch-sass.js looks like this:

var gulp          = require('gulp'),
    config        = require('../config');

// ********* IMPORTS *********
var browserSync   = require('browser-sync').create(),
    runSequence   = require('run-sequence');
// ***END*** IMPORTS ***END***

// ***** Start server on localhost for live preview *****
gulp.task('start-server', function () {
  browserSync.init({
    server: {
      baseDir: config.paths.Project.dir
    },
    open: true
  });
});

// ***** Gulp watch Sass files *****
gulp.task('watch-sass', ['start-server'], function () {
  gulp.watch(config.paths.Sass.all, function () {
    runSequence(
      'sass',
      'useref-css',
      'move-index',
      browserSync.reload
    );
  });
});

The function browserSync.reload works. At least in this method. Although I wanted to have 'start-server' task in separated file and I don't know how to do it.

So, based on this method I wanted to do something similar for JS files. I named the task and file ' watch-js.js '. The code is almost extactly same, just different config paths and tasks in runSequence. watch-js.js

var gulp          = require('gulp'),
    config        = require('../config');

// ********* IMPORTS *********
var browserSync   = require('browser-sync').create(),
    runSequence   = require('run-sequence');
// ***END*** IMPORTS ***END***

// ***** Start server on localhost for live preview *****
gulp.task('start-server', function () {
  browserSync.init({
    server: {
      baseDir: config.paths.Project.dir
    },
    open: true
  });
});

// ***** Gulp watch JS files *****
gulp.task('watch-js', ['start-server'], function () {
  gulp.watch(config.paths.JS.all, function () {
    runSequence(
      'useref-js',
      'move-index',
      browserSync.reload
    );
  });
});

Aaaand here comes the surprise. Running this task, using same method the function browserSync.reload is NOT being executed ! I excepted it to work the same as in watch-sass, where it works. I'm really lost now, anyone more experienced could help me what wrong I am doing?