fs-iterator/dist/esm/depthFirst/index.js

A file system iterator with filter and asyncIterator iterafaces. Supports Node 0.10 and above

import fsCompat from '../fs-compat/index.js';
import lifoFromArray from '../lifoFromArray.js';
import createEntry from './createEntry.js';
import filter from './filter.js';
import stat from './stat.js';
function isDirectory(entry) {
    if (entry.realStats) return entry.realStats.isDirectory();
    return entry.stats.isDirectory();
}
export default function path(item, iterator, callback) {
    const depth = item.depth;
    const entry = createEntry(iterator, item);
    item = null; // release reference
    stat(iterator, entry, function statCallback(err) {
        if (err || iterator.isDone()) return callback(err);
        filter(iterator, entry, function filterCallback(err, keep) {
            if (err || !keep || iterator.isDone()) return callback(err);
            // not a directory or is a directory, but next level is too deep
            if (!isDirectory(entry) || depth + 1 > iterator.depth) return callback(null, entry);
            // get files in this directory
            fsCompat.readdir(entry.fullPath, iterator.readdirOptions, function readdirCallback(err, files) {
                if (err || iterator.isDone()) return callback(err);
                if (files.length) iterator.push({
                    path: entry.path,
                    depth: depth + 1,
                    files: lifoFromArray(files)
                });
                return callback(null, entry);
            });
        });
    });
}