Gulp 4 迁移错误(您是否忘记发出异步完成信号?

Gulp 4 Migration Errors (Did you forget to signal async completion?)

本文关键字：异步 信号 忘记 迁移 错误 是否 Gulp      更新时间：2023-09-26

我有一个 gulp 3 文件，我正在尝试升级到 gulp 4。当我这样做时，有些任务会起作用，而其他任务则不起作用。我得到的三个错误如下：

干净风格：

gulp.task('clean-styles', function (done) {
    var files = config.temp + '**/*.css';
    clean(files, done);
});
[23:47:05] The following tasks did not complete: clean-styles 
[23:47:05] Did you forget to signal async completion?

SCSS-Watcher： 

gulp.task('scss-watcher', function () {
    gulp.watch([config.scss], ['styles']);
});
[23:51:27] 'scss-watcher' errored after 2.46 ms
[23:51:27] Error: watching ./src/client/styles/styles.scss: watch task has to be a function (optionally generated by using gulp.parallel or gulp.series)

样式：(如果我删除干净样式系列，这将起作用(

gulp.task('styles', gulp.series('clean-styles', function () {
log('Compiling SCSS --> CSS');
return gulp
    .src(config.scss)
    .pipe($.scss())
    .pipe($.autoprefixer({ browsers: ['last 2 versions', '> 5%'] }))
    .pipe(gulp.dest(config.temp));
}));
[23:52:42] The following tasks did not complete: styles, clean-styles
[23:52:42] Did you forget to signal async completion?

兽医：(作品(

gulp.task('vet', function () {
    log('Analyzing source with ESLint');
    return gulp
        .src(config.js)
        .pipe($.if(args.verbose, $.print()))
        .pipe($.eslint())
        .pipe($.eslint.format())
        .pipe($.eslint.failOnError());
});

功能：

function clean(path, done) {
    log('Cleaning: ' + $.util.colors.blue(path));
    del(path, done);
}
function log(msg) {
    if (typeof(msg) === 'object') {
        for (var item in msg) {
            if (msg.hasOwnProperty(item)) {
                $.util.log($.util.colors.blue(msg[item]));
            }
        }
    }
    else {
        $.util.log($.util.colors.blue(msg));
    }
}

我一定错过了什么。谁能填补我错过的东西？

干净样式

del 不接受回调函数。它返回您必须在任务中返回的Promise：

function clean(path) {
    log('Cleaning: ' + $.util.colors.blue(path));
    return del(path);
}
gulp.task('clean-styles', function () {
    var files = config.temp + '**/*.css';
    return clean(files);
});

scss-watcher

gulp.watch()不再支持任务名称数组。你必须给它传递一个函数，gulp.series()或gulp.parallel()：

gulp.task('scss-watcher', function () {
    gulp.watch([config.scss], gulp.series('styles'));
});

风格

应该使用上述clean-styles更改。

朋友们，这是解决此问题的方法：

我们需要调用回调函数(任务和匿名(

function electronTask(callbackA)
{
    return gulp.series(myFirstTask, mySeccondTask, (callbackB) =>
    {
        callbackA();
        callbackB();
    });
}
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