The docs are outdated

[hotfusion]

Hey,

The example in the documentation may not be compatible with Gulp 5 and the merge2 package. It should be replaced with merge-stream instead. The merge2 package only works with Gulp 4. With Gulp 5, the merge2 package throws the following error Error: Writable stream closed prematurely while running this example:

gulp.task('scripts', function() {
    var tsResult = gulp.src('lib/**/*.ts')
        .pipe(ts({
            declaration: true
        }));
 
    return merge([
        tsResult.dts.pipe(gulp.dest('release/definitions')),
        tsResult.js.pipe(gulp.dest('release/js'))
    ]);
});

This might be confusing for some developers since most of us run npm install gulp, which installs the latest version by default. Hope this helps!