Gulp - Delete empty folders recursively - gulp

Question

I want to delete all folders and subfolders inside of a given directory if they only contain folders and no files. Is there an easy way to do that?
What I found until now:
https://www.npmjs.com/package/gulp-recursive-folder
https://www.npmjs.com/package/gulp-count
https://www.npmjs.com/package/gulp-path

Answer 1

You can use delete-empty:
gulp.task('delete-empty-directories', function() {
deleteEmpty.sync('foo/');
});
This recursively deletes all empty folders below foo/.

Answer 2

Here's a rough start, so you'll just need to loop for recursion I guess.
var modules = {
gulp : require('gulp'),
fs : require('fs'),
path : require('path'),
del : require('del'),
map : require('map-stream')
};
modules.gulp.task('folder-delete', function() {
// get folder list inside of the dir passed in
function getFolders(dir) {
return modules.fs.readdirSync(dir)
.filter(function(file) {
return modules.fs.statSync(modules.path.join(dir, file)).isDirectory();
});
}
var dir = '../src/', // (update with your path to the root folder)
folders = getFolders(dir),
hasFile = 0;
var folderMap = folders.map(function(folder) {
hasFile = 0; // reset for each folder
return modules.gulp.src(dir + folder + '/**/*')
.pipe(modules.map(function(file, cb) {
hasFile = 1;
cb(null, file);
}))
.on('end', function() {
console.log(hasFile, ' - ', folder);
if (!hasFile) {
modules.del([dir + folder], { force: true }).then(function() {
console.log('Deleted ' + dir + folder);
});
}
})
});
return folderMap;
});
Basically, this is setting the directory at ../src/, getting the folders at the root of that dir, then runs the src under those directories. It then uses map to see if there was a file added to the stream, then updates a variable if so. After the task finishes and if the variable has not been updated, then it will delete the folder.
As stated above, you could probably just loop through the directories for the recursion (or you could use one of the plugins you've mentioned).

Answer 3

The accepted solution, which uses the delete-empty package, doesn't work for me (and for others too). Plus, the creator seems to have stopped maintaining the package (last update 3 years ago).
What works just fine, and probably is much more future save, is a combination of sync-exec and the OS find command.
const syncExec = require("sync-exec")
syncExec("find sample/directory/ -type d -empty -delete")