walk-filtered/dist/esm/index.js

A simple, performant file system walker to provided fine-grained control over directories and files to walk. Supports Node 0.10 and above.

import Iterator from 'fs-iterator';
export * from './types.js';
function worker(root, filter, options, callback) {
    let iterator = new Iterator(root, {
        depth: options.depth === undefined ? Infinity : options.depth,
        alwaysStat: options.alwaysStat || false,
        lstat: options.lstat || false,
        filter: filter,
        callbacks: options.callbacks || options.async,
        error: (err)=>{
            if (!~Iterator.EXPECTED_ERRORS.indexOf(err.code)) return false;
            if (options.error) return options.error(err);
            return true;
        }
    });
    return iterator.forEach((_entry)=>{}, {
        concurrency: options.concurrency || Infinity
    }, function forEachCallback(err) {
        iterator.destroy();
        iterator = null;
        callback(err);
    });
}
export default function walk(root, filter, options, callback) {
    if (typeof root !== 'string') throw new Error('Directory is required');
    if (typeof filter !== 'function') throw new Error('Filter is required');
    if (typeof options === 'function') {
        callback = options;
        options = {};
    }
    options = options || {};
    if (typeof callback === 'function') {
        worker(root, filter, options, callback);
        return;
    }
    return new Promise((resolve, reject)=>worker(root, filter, options, (err)=>{
            err ? reject(err) : resolve(undefined);
        }));
}