Why am I getting an assertion error with my gulp 4 gulp.js











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I'm trying to get gulp running on Windows 7.
I've downloaded npm (6.4.1)
Installed gulp
(CLI version 3.9.1
Local version 4.0.0)
I have done the npm init in the theme file.
I get
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified



Looking at similar errors I decide to change gulp.js from:



gulp.task('browser-sync', ['sass'], function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
});


to:



gulp.task('browser-sync', gulp.series( 'sass', function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
}));


Where I now get:
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task never defined: sass










share|improve this question






















  • I switched to gulp@3.3.4 and it runs. I'm just not sure why the changes to gulp.js for gulp 4.x don't work.
    – user3511861
    Nov 18 at 2:12

















up vote
0
down vote

favorite












I'm trying to get gulp running on Windows 7.
I've downloaded npm (6.4.1)
Installed gulp
(CLI version 3.9.1
Local version 4.0.0)
I have done the npm init in the theme file.
I get
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified



Looking at similar errors I decide to change gulp.js from:



gulp.task('browser-sync', ['sass'], function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
});


to:



gulp.task('browser-sync', gulp.series( 'sass', function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
}));


Where I now get:
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task never defined: sass










share|improve this question






















  • I switched to gulp@3.3.4 and it runs. I'm just not sure why the changes to gulp.js for gulp 4.x don't work.
    – user3511861
    Nov 18 at 2:12















up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm trying to get gulp running on Windows 7.
I've downloaded npm (6.4.1)
Installed gulp
(CLI version 3.9.1
Local version 4.0.0)
I have done the npm init in the theme file.
I get
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified



Looking at similar errors I decide to change gulp.js from:



gulp.task('browser-sync', ['sass'], function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
});


to:



gulp.task('browser-sync', gulp.series( 'sass', function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
}));


Where I now get:
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task never defined: sass










share|improve this question













I'm trying to get gulp running on Windows 7.
I've downloaded npm (6.4.1)
Installed gulp
(CLI version 3.9.1
Local version 4.0.0)
I have done the npm init in the theme file.
I get
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified



Looking at similar errors I decide to change gulp.js from:



gulp.task('browser-sync', ['sass'], function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
});


to:



gulp.task('browser-sync', gulp.series( 'sass', function() {
browserSync.init({
proxy: "local.mysite.co:8080",
notify: true
});
}));


Where I now get:
assert.js:351
throw err;
^
AssertionError [ERR_ASSERTION]: Task never defined: sass







npm gulp gulp-sass






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 18 at 1:29









user3511861

62




62












  • I switched to gulp@3.3.4 and it runs. I'm just not sure why the changes to gulp.js for gulp 4.x don't work.
    – user3511861
    Nov 18 at 2:12




















  • I switched to gulp@3.3.4 and it runs. I'm just not sure why the changes to gulp.js for gulp 4.x don't work.
    – user3511861
    Nov 18 at 2:12


















I switched to gulp@3.3.4 and it runs. I'm just not sure why the changes to gulp.js for gulp 4.x don't work.
– user3511861
Nov 18 at 2:12






I switched to gulp@3.3.4 and it runs. I'm just not sure why the changes to gulp.js for gulp 4.x don't work.
– user3511861
Nov 18 at 2:12



















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