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

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

import compat from 'async-compat';
export default function filter(iterator, entry, callback) {
    if (!iterator.options.filter) return callback(null, true);
    compat.asyncFunction(iterator.options.filter, iterator.options.callbacks, entry, function filterCallback(err, keep) {
        if (err) return callback(err);
        if (!compat.defaultValue(keep, true)) return callback();
        callback(null, true);
    });
}