我可以设置gulp liverload在所有文件编译后运行吗?

我已经设置了一个与Stylus, Jade和tiny-lr一起工作的gulp。我的问题是，当我保存一个jade文件时，它开始编译它们，因此在复制到目的地的第一个文件上实时重新加载火灾，在我目前正在编译的文件之前，导致我不得不手动刷新。我已经使用"gulp-changed"修复了这个问题，但我似乎无法配置它或其他东西。有人遇到过这个问题吗?我把我的Gulp文件贴出来，你可以看看。

问题的时间线图可以在这里找到:https://www.dropbox.com/s/3g37oy25s9mq969/jade_compile_frefresh_problem.png?dl=0

任何帮助都是感激的!

    'use strict';
    var gulp = require('gulp');
    var jade = require('gulp-jade');
    var gutil = require('gulp-util');
    var stylus = require('gulp-stylus');
    var jeet = require('jeet');
    var nib = require('nib');
    var uglify = require('gulp-uglify');
    var lr = require('tiny-lr')();
    // var mainBowerFiles = require('main-bower-files');
    // Define sources object
    var sources = {
      jade: "jade/**/*.jade",
      partials: "partials/**/*.jade",
      stylus: "styl/**/*.styl",
      scripts: "js/**/*.js"
    };
    // Define destinations object
    var destinations = {
      html: "dist/",
      css: "dist/css",
      js: "dist/js"
    };
    // Compile and copy Jade
    gulp.task("jade", function(event) {
      return gulp.src(sources.jade)
      .pipe(jade({
        pretty: true
      })).pipe(gulp.dest(destinations.html));
    });
    // Compile and copy Stylus
    gulp.task("stylus", function(event) {
      return gulp.src(sources.stylus).pipe(stylus({
        use: [nib(), jeet()],
        import: [
          'nib',
          'jeet'
        ],
        style: "compressed"
      })).pipe(gulp.dest(destinations.css));
    });
    // Minify and copy all JavaScript
    gulp.task('scripts', function() {
      gulp.src(sources.scripts)
        .pipe(uglify())
        .pipe(gulp.dest(destinations.js));
    });
    // Consolidate Bower Files and copy to /dist/js/
    // gulp.task('bower-files', function() {
    //   return gulp.src(mainBowerFiles(/* options */), {})
    //     .pipe(gulp.dest(destinations.js));
    // });
    // Watch for file changes and execute tasks
    gulp.task("watch", function() {
      gulp.watch(sources.jade, ["jade"]);
      gulp.watch(sources.partials, ["jade"]);
      gulp.watch(sources.stylus, ["stylus"]);
      gulp.watch(sources.scripts, ["scripts"]);
      gulp.watch('dist/**/*', refresh);
    });
    // Live Reload
    gulp.task('serve', function () {
      var express = require('express');
      var app = express();
      app.use(require('connect-livereload')());
      app.use(express.static(__dirname+'/dist/'));
      app.listen(4000, '0.0.0.0');
      lr.listen(35729);
    });
    // Define default task
    gulp.task("default", ["jade", "stylus", "scripts", "serve", "watch"]);
    // Refresh function
    var refresh = function(event) {
      var fileName = require('path').relative(__dirname, event.path);
      gutil.log.apply(gutil, [gutil.colors.magenta(fileName), gutil.colors.cyan('built')]);
      lr.changed({
        body: { files: [fileName] }
      });
    };

我通过在我的gulpfile.js中编写一个简单的javascript函数来实现这一点

我这样做是因为当我编译我的sass文件时，liverload将运行大约10次，这个方法将使它只运行一次。

My gulpfile.js

gulp.task('watch', function() {
    $.livereload.listen();
    gulp.watch([
        path.join(config.path.app, 'media/js/**/*.js'),
        path.join(config.path.app, 'media/css/**/*.css'),
        path.join(config.path.app, 'templates/**/*.html')
    ]).on('change', stackReload);
    // a timeout variable
    var timer = null;
    // actual reload function
    function stackReload() {
        var reload_args = arguments;
        // Stop timeout function to run livereload if this function is ran within the last 250ms
        if (timer) clearTimeout(timer);
        // Check if any gulp task is still running
        if (!gulp.isRunning) {
            timer = setTimeout(function() {
                $.livereload.changed.apply(null, reload_args);
            }, 250);
        }
    }
});

我已经做到了。我所要做的就是创建一个名为"Reload"的新任务，将依赖项置于其上，并在每个其他任务之后运行它。这是新的Gulpfile":

使用严格的;

var gulp = require('gulp');
var jade = require('gulp-jade');
var gutil = require('gulp-util');
var stylus = require('gulp-stylus');
var jeet = require('jeet');
var nib = require('nib');
var uglify = require('gulp-uglify');
var livereload = require('gulp-livereload');
var sources = {
  jade: "jade/**/*.jade",
  partials: "partials/**/*.jade",
  stylus: "styl/**/*.styl",
  scripts: "js/**/*.js"
};
// Define destinations object
var destinations = {
  html: "dist/",
  css: "dist/css",
  js: "dist/js"
};
// Compile and copy Jade
gulp.task("jade", function(event) {
  return gulp.src(sources.jade)
  .pipe(jade({pretty: true}))
  .pipe(gulp.dest(destinations.html))
});
// Compile and copy Stylus
gulp.task("stylus", function(event) {
  return gulp.src(sources.stylus).pipe(stylus({
    use: [nib(), jeet()],
    import: [
      'nib',
      'jeet'
    ],
    style: "compressed"
  })).pipe(gulp.dest(destinations.css));
});
// Minify and copy all JavaScript
gulp.task('scripts', function() {
  gulp.src(sources.scripts)
    .pipe(uglify())
    .pipe(gulp.dest(destinations.js));
});
// Server
gulp.task('server', function () {
  var express = require('express');
  var app = express();
  app.use(require('connect-livereload')());
  app.use(express.static(__dirname+'/dist/'));
  app.listen(4000, '0.0.0.0');
});
// Watch sources for change, executa tasks
gulp.task('watch', function() {
  livereload.listen();
  gulp.watch(sources.jade, ["jade", "refresh"]);
  gulp.watch(sources.partials, ["jade", "refresh"]);
  gulp.watch(sources.stylus, ["stylus", "refresh"]);
  gulp.watch(sources.scripts, ["scripts", "refresh"]);
});
// Refresh task. Depends on Jade task completion
gulp.task("refresh", ["jade"], function(){
  livereload.changed();
  console.log('LiveReload is triggered');
});
// Define default task
gulp.task("default", ["jade", "stylus", "scripts", "server", "watch"]);

您可以使用gulp- liverload并编写自己的回调，当您需要时发送reload事件:

var livereload = require('gulp-livereload'),
    path = require('path');
module.exports = function(gulp) {
    gulp.task('watch', function() {
        livereload.listen();
        gulp.watch([
            path.resolve(__dirname, '../src/**/*.js'),
            path.resolve(__dirname, '../index.html')
        ]).on('change', function(event) {
            livereload.changed();
            console.log('File', event.path, 'was', event.type);
            console.log('LiveReload is triggered');
        });
    });
};

UPD:所以，对于你的情况，你可以这样做:

1)安装gulp-livereload:

npm install gulp-livereload --save-dev

2)将gulp-livereload纳入gulpfile.js

var livereload = require('gulp-livereload');

3)用watch任务替换旧代码，我的意思是:

// Watch for file changes and execute tasks
gulp.task("watch", function() {
  gulp.watch(sources.jade, ["jade"]);
  gulp.watch(sources.partials, ["jade"]);
  gulp.watch(sources.stylus, ["stylus"]);
  gulp.watch(sources.scripts, ["scripts"]);
  gulp.watch('dist/**/*', refresh);
});

并将其替换为新代码:

gulp.task('watch', function() {
    livereload.listen();
    gulp.watch([
        sources.jade,
        sources.partials,
        sources.stylus,
        sources.scripts,
        'dist/**/*'
    ]).on('change', function(event) {
        livereload.changed();
        console.log('File', event.path, 'was', event.type);
        console.log('LiveReload is triggered');
    });
});

4)当然检查这个配置是否符合你的要求。

我在编译typescript然后使用liverload刷新时遇到了类似的问题。为了解决这个问题，我创建了"watch tasks"，在工作完成后运行刷新任务。

下面是我使用的模式从你的问题中提取的最小代码示例:

'use strict';
var gulp = require('gulp');
var jade = require('gulp-jade');
var livereload = require('gulp-livereload');
var sources = {
  jade: "jade/**/*.jade"
};
var destinations = {
  html: "dist/"
};
// Compile and copy Jade
gulp.task("jade", function() {
  return gulp.src(sources.jade)
  .pipe(jade({pretty: true}))
  .pipe(gulp.dest(destinations.html));
});
gulp.task('refresh', function() { return livereload.reload(); });
// execute task, then when finished, refresh
gulp.task("watch-jade", ["jade"], function() { return gulp.start('refresh'); });
gulp.task("watch", function() {  
  livereload.listen();
  gulp.watch(sources.jade, ["watch-jade"]);
});

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