AssertionError [ERR_ASSERTION]: Task function must be specified

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.

asked Nov 22 '18 at 20:46

Daniel

1,70121638

add a comment |

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.

asked Nov 22 '18 at 20:46

Daniel

1,70121638

add a comment |

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.

asked Nov 22 '18 at 20:46

Daniel

1,70121638

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

asked Nov 22 '18 at 20:46

Daniel

1,70121638

asked Nov 22 '18 at 20:46

Daniel

1,70121638

asked Nov 22 '18 at 20:46

Daniel

1,70121638

asked Nov 22 '18 at 20:46

Daniel

1,70121638

asked Nov 22 '18 at 20:46

Daniel

1,70121638

add a comment |

2 Answers
2

active

oldest

votes

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.

answered Nov 22 '18 at 22:07

Poode

43358

add a comment |

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.

answered Dec 19 '18 at 11:51

Abdul Malik

211

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

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.

answered Nov 22 '18 at 22:07

Poode

43358

add a comment |

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.

answered Nov 22 '18 at 22:07

Poode

43358

add a comment |

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.

answered Nov 22 '18 at 22:07

Poode

43358

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.

answered Nov 22 '18 at 22:07

Poode

43358

answered Nov 22 '18 at 22:07

Poode

43358

answered Nov 22 '18 at 22:07

Poode

43358

answered Nov 22 '18 at 22:07

Poode

43358

add a comment |

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.

answered Dec 19 '18 at 11:51

Abdul Malik

211

add a comment |

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.

answered Dec 19 '18 at 11:51

Abdul Malik

211

add a comment |

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.

answered Dec 19 '18 at 11:51

Abdul Malik

211

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.

answered Dec 19 '18 at 11:51

Abdul Malik

211

answered Dec 19 '18 at 11:51

Abdul Malik

211

answered Dec 19 '18 at 11:51

Abdul Malik

211

answered Dec 19 '18 at 11:51

Abdul Malik

211

add a comment |

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