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how can i solve this error 'The following tasks did not complete: default, Did you forget to signal async completion? '


By : Arun kharb
Date : October 14 2020, 02:21 PM
fixed the issue. Will look into that further In Gulp 3.x you didn't need to signal completion. But from Gulp 4.x you need to do that.
Gulp automatically passes a callback function to your task as its first argument. Simple way in your case would be calling the callback.
code :
gulp.task('default', function(done) {
  console.log("Started");
  done();
});


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


By : Gianluca Astuti
Date : March 29 2020, 07:55 AM
I wish this helpful for you clean-styles
del doesn't take a callback function. It returns a Promise that you have to return in your task:
code :
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);
});
gulp.task('scss-watcher', function () {
    gulp.watch([config.scss], gulp.series('styles'));
});

The following tasks did not complete: serve, sass. Did you forget to signal async completion?


By : Vishnu
Date : March 29 2020, 07:55 AM
Any of those help Other answers were not helpful. I'm using Gulp 4 on Windows 10. , Try this instead:
code :
gulp.task('sass', function() {

    return gulp.src('./public_html/lib/sass/main.scss')
        .pipe(sass()).on("error", sass.logError))
        .pipe(gulp.dest('./public_html/css'))
        .pipe(reload({ stream:true }));
});

Gulp error: The following tasks did not complete: Did you forget to signal async completion?


By : Mr.Moe
Date : March 29 2020, 07:55 AM
around this issue Since your task might contain asynchronous code you have to signal gulp when your task has finished executing (= "async completion").
In Gulp 3.x you could get away without doing this. If you didn't explicitly signal async completion gulp would just assume that your task is synchronous and that it is finished as soon as your task function returns. Gulp 4.x is stricter in this regard. You have to explicitly signal task completion.

Gulp 4: how to detect the "Did you forget to signal async completion?" error in a complex build script


By : Ma Khulna
Date : March 29 2020, 07:55 AM
this will help You can use the stream/Promise/callback to signal the process. Once the hand shake is done , you could proceed with the process.
code :
var print = require('gulp-print');

gulp.task('message', function() {
  return gulp.src('package.json')
    .pipe(print(function() { return 'HTTP Server Started'; }));
});

gulp.task('message', function() { 
  return new Promise(function(resolve, reject) {
    console.log("HTTP Server Started");
    resolve();
  });
});

gulp.task('message', function(done) {
  console.log("HTTP Server Started");
  done();
});
function syncTasks(callback1)
{
    return gulp.series(firstTask, secondTask, (callback2) =>
    {
        callback1();
        callback2();
    })();    
}

Gulp4 - tasks did not complete and forget to signal async completion


By : Topolittle
Date : March 29 2020, 07:55 AM
will be helpful for those in need Your js task returns an array, gulp doesn't understand that. A task can return a stream or a promise - or it must call the callback parameter to signal completion, like so:
code :
gulp.task('js', function(cb) {
    // Your js task code here
    cb();    
})
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