Running GULP why error?

Question

gulp.js

Hello everyone, I copied the following code from the site documentation https://www.browsersync.io SASS + CSS Injecting:

var gulp        = require('gulp');
var browserSync = require('browser-sync');
var sass        = require('gulp-sass');

// Static Server + watching scss/html files
gulp.task('serve', ['sass'], function() {

    browserSync.init({
        server: "src/"
    });

    gulp.watch("src/sass/*.sass", ['sass']);
    gulp.watch("src/*.html").on('change', browserSync.reload);
});

// Compile sass into CSS & auto-inject into browsers
gulp.task('sass', function() {
    return gulp.src("src/sass/*.sass")
        .pipe(sass())
        .pipe(gulp.dest("src/css"))
        .pipe(browserSync.stream());
});

gulp.task('default', ['serve']);

Naturally, I registered the directories under my folders, but when I run it from the console gulp, I get an error:

PS C:\Users\Qwerty\Desktop\web\project> gulp
assert.js:350
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified
at Gulp.set [as _setTask] (C:\Users\Qwerty\Desktop\web\project\node_modules\undertaker\lib\set-task.js:10:3)
at Gulp.task (C:\Users\Qwerty\Desktop\web\project\node_modules\undertaker\lib\task.js:13:8)
at Object. (C:\Users\Qwerty\Desktop\web\project\gulpfile.js:6:6)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12 )
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers .js:22:18)
PS C:\Users\Qwerty\Desktop\web\project>

Maybe I didn't install something?

Answer 1

You have locally installed Gulp version 4, and the tasks are written for Gulp 3.
In the fourth version, a syntax has appeared that allows you to specify the order in which tasks are run. You can also run tasks in parallel using gulp.parallel. See here