Gulp with watchify/browserify运行两次然后停止观看

Question

这是我的gulpfile.js

var gulp = require('gulp');
var browserify = require('browserify');
var source = require("vinyl-source-stream");
var reactify = require("reactify");
var watchify = require('watchify');
var gutil = require('gulp-util');

var paths = {
    scripts: ['src/jsx/index.jsx']
};

gulp.task('browserify', function(){


    var bundler = watchify(browserify('./src/jsx/index.jsx', watchify.args));
    bundler.transform(reactify);

    bundler.on('update', rebundle);

    function rebundle() {
        return bundler.bundle()
            // log errors if they happen
            .on('error', gutil.log.bind(gutil, 'Browserify Error'))
            .pipe(source('bundle.js'))
            .pipe(gulp.dest('./public/js'));
    }

    return rebundle();

});

gulp.task('watch', function() {
    gulp.watch(paths.scripts, ['browserify']);
});

然后我的命令行输出如下所示:

$ gulp watch

[15:10:41] Using gulpfile ~/blizztrack/dashboard/gulpfile.js
[15:10:41] Starting 'watch'...
[15:10:41] Finished 'watch' after 9.95 ms

保存index.jsx

[15:10:45] Starting 'browserify'...
[15:10:51] Finished 'browserify' after 5.33 s

第二次保存index.jsx

[15:11:08] Starting 'browserify'...
[15:11:10] Finished 'browserify' after 2.02 s

第三次保存index.jsx

没有输出.

这似乎完全是我想要的前两次,然后它就停止观看.谁能指出我正确的方向？

Answer 1

刚刚遇到这个问题.在网上浏览了几个小时的答案后,我尝试在记事本中编辑文件而不是PHPStorm IDE.事实证明,browserify/watchify继续通过记事本工作.

那是我尝试玩一些设置的时候.结果发现PHPStorm /系统设置/使用"安全写入",如果启用,则在PHPStorm编辑文件后停止监视.

当我关闭"安全写入"时,所有问题都神奇地消失了.我不确定您使用的IDE是什么,但也许还有"安全写入"选项.

Answer 2

当我第一次使用watchify来加速浏览js编译时,这对我来说并不明显.使用watchify gulp.watch时不再需要.要在输出/任务窗口中查看编译/构建时间,您可以执行以下操作(请注意gutil.log命令):

    var gulp = require('gulp');
    var gutil = require('gulp-util');
    var source = require('vinyl-source-stream');
    var buffer = require('vinyl-buffer');
    var watchify = require('watchify');
    var browserify = require('browserify');

    var bundler = watchify(browserify('./src/app.js', watchify.args));
    gulp.task('browserify', bundle);

    bundler.on('update', bundle); 

    function bundle() {
        var start = new Date().getTime();

        var b = bundler.bundle()
          .on('error', gutil.log.bind(gutil, 'Browserify Error'))
          .pipe(source('bundle.js'))
          .pipe(buffer())
          .pipe(gulp.dest('./src/dist'));

        var end = new Date().getTime();
        var time = end - start;

        gutil.log('[browserify]', 'rebundle took ', gutil.colors.cyan(time + ' ms'));
        return b;
    }

看看是否有帮助.

Answer 3

这是我的新工作 gulp 文件的样子。没有给我带来任何问题并完成同样的事情。很确定@Ben 是正确的 - gulp.watch 和 watchify 是冲突的。

var gulp = require('gulp');
var source = require('vinyl-source-stream');
var browserify = require('browserify');
var watchify = require('watchify');
var reactify = require('reactify');
var chalk = require('chalk');
var gcallback = require('gulp-callback');
var moment = require('moment');
var gutil = require('gutil');

var jsDest = '../../server/webship/html/html/static/js';
var viewsDir = './js/views';

var watchifyArgs = watchify.args;
watchifyArgs.debug = true;

var bundler = watchify(browserify('./js/views/main.jsx', watchifyArgs));
// add any other browserify options or transforms here
bundler.transform(reactify);

bundler.on('time', function (time) {
    var durationOfBundleBuild = moment.duration(time).asSeconds();
    console.log(chalk.green('Updated'), ' bundle in ', chalk.bold(durationOfBundleBuild + 's'), '\n');
});

gulp.task('watch', function() {

    bundle(true);

    bundler.on('update', function() {
        console.log('updating...');
        bundle(true);
    });
});

gulp.task('build', function() {
    bundle();
    bundler.close();
});

function bundle(watching) {

    console.log(chalk.yellow('Updating') + ' bundle...');

    bundler.bundle()
        .on('error', gutil.log.bind(gutil, 'Browserify Error'))
        .pipe(source('bundle.js'))
        .pipe(gulp.dest(jsDest))
        .pipe(gcallback(function() {

            if (!watching) {
                process.nextTick(function() {
                    process.exit(0);
                });
            }
        }));
}