nodejs: remove empty directories recursively, async version of https://gist.github.com/jakub-g/5903dc7e4028133704a4

remove-empty-directories.js

const fsPromises = require('fs').promises;
const path = require('path');

/**
 * Recursively removes empty directories from the given directory.
 *
 * If the directory itself is empty, it is also removed.
 *
 * Code taken from: https://gist.github.com/jakub-g/5903dc7e4028133704a4
 *
 * @param {string} directory Path to the directory to clean up
 */
async function removeEmptyDirectories(directory) {
    // lstat does not follow symlinks (in contrast to stat)
    const fileStats = await fsPromises.lstat(directory);
    if (!fileStats.isDirectory()) {
        return;
    }
    let fileNames = await fsPromises.readdir(directory);
    if (fileNames.length > 0) {
        const recursiveRemovalPromises = fileNames.map(
            (fileName) => removeEmptyDirectories(path.join(directory, fileName)),
        );
        await Promise.all(recursiveRemovalPromises);

        // re-evaluate fileNames; after deleting subdirectory
        // we may have parent directory empty now
        fileNames = await fsPromises.readdir(directory);
    }

    if (fileNames.length === 0) {
        console.log('Removing: ', directory);
        await fsPromises.rmdir(directory);
    }
}

module.exports = {
    removeEmptyDirectories,
};

Thanks!