AssertionError [ERR_ASSERTION]: Task function must be specified












0















I am attempting to refactor some legacy code I wrote 2 years ago. A gulpfile.js file to be precise.



It seems like the problem is here:



// gulp.task('default', ['browserify', 'copy'], function() {

//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);

// });


I commented it out and replaced it with this:



gulp.task('default', gulp.series('browserify', 'copy'), function() {

  return gulp.watch('src/**/*.*', ['browserify', 'copy']);

});


Not good enough. The whole file looks like this:



var gulp = require('gulp');

var browserify = require('browserify');

var reactify = require('reactify'); // Converts jsx to js

var source = require('vinyl-source-stream'); // Converts string to a stream



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

  browserify('./src/js/main.js')

    .transform('reactify')

    .bundle()

    .pipe(source('main.js'))

    .pipe(gulp.dest('dist/js'));

});



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

  gulp.src('src/index.html').pipe(gulp.dest('dist'));

  gulp.src('src/css/*.*').pipe(gulp.dest('dist/css'));

  gulp.src('src/images/*.*').pipe(gulp.dest('dist/images'));

  gulp.src('src/js/vendors/*.*').pipe(gulp.dest('dist/js'));

});



// gulp.task('default', ['browserify', 'copy'], function() {

//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);

// });



gulp.task('default', gulp.series('browserify', 'copy'), function() {

  return gulp.watch('src/**/*.*', ['browserify', 'copy']);

});


I have read through some of the getting started documentation, but what I have read thus far has not helped me refactor this.






javascript gulp







share|improve this question



























    0















    I am attempting to refactor some legacy code I wrote 2 years ago. A gulpfile.js file to be precise.



    It seems like the problem is here:



    // gulp.task('default', ['browserify', 'copy'], function() {
    
//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);
    
// });


    I commented it out and replaced it with this:



    gulp.task('default', gulp.series('browserify', 'copy'), function() {
    
  return gulp.watch('src/**/*.*', ['browserify', 'copy']);
    
});


    Not good enough. The whole file looks like this:



    var gulp = require('gulp');
    
var browserify = require('browserify');
    
var reactify = require('reactify'); // Converts jsx to js
    
var source = require('vinyl-source-stream'); // Converts string to a stream
    

    
gulp.task('browserify', function() {
    
  browserify('./src/js/main.js')
    
    .transform('reactify')
    
    .bundle()
    
    .pipe(source('main.js'))
    
    .pipe(gulp.dest('dist/js'));
    
});
    

    
gulp.task('copy', function() {
    
  gulp.src('src/index.html').pipe(gulp.dest('dist'));
    
  gulp.src('src/css/*.*').pipe(gulp.dest('dist/css'));
    
  gulp.src('src/images/*.*').pipe(gulp.dest('dist/images'));
    
  gulp.src('src/js/vendors/*.*').pipe(gulp.dest('dist/js'));
    
});
    

    
// gulp.task('default', ['browserify', 'copy'], function() {
    
//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);
    
// });
    

    
gulp.task('default', gulp.series('browserify', 'copy'), function() {
    
  return gulp.watch('src/**/*.*', ['browserify', 'copy']);
    
});


    I have read through some of the getting started documentation, but what I have read thus far has not helped me refactor this.






    javascript gulp







    share|improve this question

























      0












      0








      0








      I am attempting to refactor some legacy code I wrote 2 years ago. A gulpfile.js file to be precise.



      It seems like the problem is here:



      // gulp.task('default', ['browserify', 'copy'], function() {
      
//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
// });


      I commented it out and replaced it with this:



      gulp.task('default', gulp.series('browserify', 'copy'), function() {
      
  return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
});


      Not good enough. The whole file looks like this:



      var gulp = require('gulp');
      
var browserify = require('browserify');
      
var reactify = require('reactify'); // Converts jsx to js
      
var source = require('vinyl-source-stream'); // Converts string to a stream
      

      
gulp.task('browserify', function() {
      
  browserify('./src/js/main.js')
      
    .transform('reactify')
      
    .bundle()
      
    .pipe(source('main.js'))
      
    .pipe(gulp.dest('dist/js'));
      
});
      

      
gulp.task('copy', function() {
      
  gulp.src('src/index.html').pipe(gulp.dest('dist'));
      
  gulp.src('src/css/*.*').pipe(gulp.dest('dist/css'));
      
  gulp.src('src/images/*.*').pipe(gulp.dest('dist/images'));
      
  gulp.src('src/js/vendors/*.*').pipe(gulp.dest('dist/js'));
      
});
      

      
// gulp.task('default', ['browserify', 'copy'], function() {
      
//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
// });
      

      
gulp.task('default', gulp.series('browserify', 'copy'), function() {
      
  return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
});


      I have read through some of the getting started documentation, but what I have read thus far has not helped me refactor this.






      javascript gulp







      share|improve this question














      I am attempting to refactor some legacy code I wrote 2 years ago. A gulpfile.js file to be precise.



      It seems like the problem is here:



      // gulp.task('default', ['browserify', 'copy'], function() {
      
//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
// });


      I commented it out and replaced it with this:



      gulp.task('default', gulp.series('browserify', 'copy'), function() {
      
  return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
});


      Not good enough. The whole file looks like this:



      var gulp = require('gulp');
      
var browserify = require('browserify');
      
var reactify = require('reactify'); // Converts jsx to js
      
var source = require('vinyl-source-stream'); // Converts string to a stream
      

      
gulp.task('browserify', function() {
      
  browserify('./src/js/main.js')
      
    .transform('reactify')
      
    .bundle()
      
    .pipe(source('main.js'))
      
    .pipe(gulp.dest('dist/js'));
      
});
      

      
gulp.task('copy', function() {
      
  gulp.src('src/index.html').pipe(gulp.dest('dist'));
      
  gulp.src('src/css/*.*').pipe(gulp.dest('dist/css'));
      
  gulp.src('src/images/*.*').pipe(gulp.dest('dist/images'));
      
  gulp.src('src/js/vendors/*.*').pipe(gulp.dest('dist/js'));
      
});
      

      
// gulp.task('default', ['browserify', 'copy'], function() {
      
//   return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
// });
      

      
gulp.task('default', gulp.series('browserify', 'copy'), function() {
      
  return gulp.watch('src/**/*.*', ['browserify', 'copy']);
      
});


      I have read through some of the getting started documentation, but what I have read thus far has not helped me refactor this.






      javascript gulp




      javascript gulp






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 22 '18 at 20:46









      DanielDaniel

      1,70121638




      1,70121638
























          2 Answers
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          0














          This issue faced me because of the version of gulp I installed using npm i gulp
          to solve this quickly, downgrade to that gulp version you used before 2 years and everything will work fine.






          share|improve this answer































            2














            With Gulp 4.0 the way you run tasks in series has got changed. You can read and get what you want using below link
            https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md.






            share|improve this answer























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              2 Answers
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              active

              oldest

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              0














              This issue faced me because of the version of gulp I installed using npm i gulp
              to solve this quickly, downgrade to that gulp version you used before 2 years and everything will work fine.






              share|improve this answer




























                0














                This issue faced me because of the version of gulp I installed using npm i gulp
                to solve this quickly, downgrade to that gulp version you used before 2 years and everything will work fine.






                share|improve this answer


























                  0












                  0








                  0







                  This issue faced me because of the version of gulp I installed using npm i gulp
                  to solve this quickly, downgrade to that gulp version you used before 2 years and everything will work fine.






                  share|improve this answer













                  This issue faced me because of the version of gulp I installed using npm i gulp
                  to solve this quickly, downgrade to that gulp version you used before 2 years and everything will work fine.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 22 '18 at 22:07









                  PoodePoode

                  43358




                  43358

























                      2














                      With Gulp 4.0 the way you run tasks in series has got changed. You can read and get what you want using below link
                      https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md.






                      share|improve this answer




























                        2














                        With Gulp 4.0 the way you run tasks in series has got changed. You can read and get what you want using below link
                        https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md.






                        share|improve this answer


























                          2












                          2








                          2







                          With Gulp 4.0 the way you run tasks in series has got changed. You can read and get what you want using below link
                          https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md.






                          share|improve this answer













                          With Gulp 4.0 the way you run tasks in series has got changed. You can read and get what you want using below link
                          https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Dec 19 '18 at 11:51









                          Abdul MalikAbdul Malik

                          211




                          211






























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