recfs

This npm module provides utility functions for listing all files in a directory either synchronously or asynchronously.

Installation

$ npm install recfs

Usage

First, we need to require the module:

const recfs = require('recfs')

Inside the recfs module, there are two functions: readdir(directory[, options[, regex]]) and readdirSync(directory[, options[, regex]]).

• The directory is the directiory we would like to list all files recursively from.
• The options is the same options as provided to fs.readdir and fs.readdirSync (by having this set to undefined, the character encoding will default to utf8).
• The regex allows us to specify a search pattern. If a file does not match this pattern, it will not be returned.

Furthermore, readdirSync returns a Promise, whilst readdir returns the list of files located.

Directory Structure

For the following two examples, let us assume we have the directory structure:

cache/
	more/
		love.js
		test.htm
	test.c
	test.js

readdir

To read a directory asynchronously, we can do:

recfs.readdir('cache').then((files) => {
	console.log(files)
}).catch((err) => {
	throw err
})

// Expected output: [ 'cache/test.c', 'cache/test.js', 'cache/more/love.js', 'cache/more/test.htm' ]

Furthermore, if we are only interested in files ending in '.js', we can add a regular expression:

recfs.readdir('cache', undefined, /^.*\.js$/).then((files) => {
	console.log(files)
}).catch((err) => {
	throw err
})

// Expected output: [ 'cache/test.js', 'cache/more/love.js' ]

This allows us to retrieve a more specific set of files.

readdirSync

To read a directory synchronously, we can do:

let files = recfs.readdirSync('cache')

console.log(files)

// Expected output: [ 'cache/test.c', 'cache/test.js', 'cache/more/love.js', 'cache/more/test.htm' ]

Like with the asynchronous version of the function, we can provide it with a regular expression to retrieve a more specific set of files:

let files = recfs.readdirSync('cache', undefined, /^.*\.js$/)

console.log(files)

// Expected output: [ 'cache/test.js', 'cache/more/love.js' ]

License

This module, and the code therein, is licensed under ISC.