Recursively read a directory, blazing fast.
Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your ❤️ and support.
Install with npm (requires Node.js >=10):
$ npm install --save @folder/readdir- It's blazing fast.
- It has a simple, straightforward API and intuitive options for advanced use cases.
- Optionally returns an array of file objects (extends node.js native fs.Dirent). Returns path strings by default.
- No dependencies
constreaddir=require('@folder/readdir');constoptions={};// async usageconsole.log(awaitreaddir('somedir',options));console.log(awaitreaddir(['two','dirs'],options));// sync usageconsole.log(readdir.sync('somedir',options));console.log(readdir.sync(['two''dirs'],options));params
Both the async and sync functions take the same arguments:
readdir(dir,options);dir(string|array) - one or more directories to readoptions- see available options
When true, absolute paths are returned. Otherwise, returned paths are relative to options.base if defined, or the given directory.
Type: boolean
Default: undefined
Example
console.log(awaitreaddir('some/dir',{absolute: true}));The base directory from which relative paths should be created.
Type: string
Default: Defaults to the directory passed as the first argument.
Example
constfiles=awaitreaddir('some/dir',{base: 'dir'});console.log(files);When true, only the basename of each file is returned.
Type: boolean
Default: undefined
Example
console.log(awaitreaddir('some/dir',{basename: true}));The maximum folder depth to recursively read directories.
Type: number
Default: undefined
Example
constfiles=awaitreaddir('some/dir',{depth: 2});console.log(files);Dotfiles are included in the result by default. Pass false to ignore all dotfiles. Use [onEach][], [onFile][], [onDirectory][], or [isMatch] if you need something more granular.
Type: boolean
Default: true
Example
constfiles=awaitreaddir('.');console.log(files);//=> ['.DS_Store', '.git', 'LICENSE', 'README.md', 'package.json']constfiles=awaitreaddir('.',{dot: false});console.log(files);//=> ['LICENSE', 'README.md', 'package.json']Type: function|string|array|regexp
Default: undefined
Example
// only return file paths with "foo" somewhere in the pathconsole.log(awaitreaddir('some/dir',{filter: /foo/}));// only return file paths without "foo" somewhere in the pathconsole.log(awaitreaddir('some/dir',{filter: file=>!/foo/.test(file.path)}));Follow symbolic links.
Type: boolean
Default: undefined
Example
console.log(awaitreaddir('some/dir',{follow: true}));Type: function|string|regex|array<function|string|regex>
Default: undefined
Example
// only return file paths with "/.git/" somewhere in the pathconsole.log(awaitreaddir('some/dir',{isMatch: /\/\.git\//}));// only return file paths that are not inside "node_modules"console.log(awaitreaddir('some/dir',{isMatch: file=>!file.relative.includes('node_modules')}));// get all files that are not named .DS_Storeconsole.log(awaitreaddir('some/dir',{isMatch: file=>file.name!=='.DS_Store'}));// use globsconstpicomatch=require('picomatch');constisMatch=picomatch('*/*.js');console.log(awaitreaddir('some/dir',{isMatch: file=>isMatch(file.relative)}));When true directories are excluded from the result.
Type: boolean
Default: undefined
Return fs.Dirent objects instead of paths.
Type: boolean
Default: undefined
console.log(awaitreaddir('some/dir',{objects: true}));Function to be called on all directories.
Type: function
Default: undefined
Example
constonDirectory=file=>{if(file.name==='node_modules'){file.recurse=false;}};console.log(awaitreaddir('some/dir',{ onDirectory }));Function to be called on all directories and files.
Type: function
Default: undefined
Example
constonEach=file=>{if(file.name==='node_modules'){file.recurse=false;}if(file.isFile()&&file.name[0]==='.'){file.keep=true;}};console.log(awaitreaddir('some/dir',{ onEach }));Function to be called on all files.
Type: function
Default: undefined
Example
constonFile=file=>{if(file.isFile()&&file.name[0]==='.'){file.keep=true;}};console.log(awaitreaddir('some/dir',{ onFile }));Function to be called on all symbolic links.
Type: function
Default: undefined
Example
constonSymbolicLink=file=>{// do stuff};console.log(awaitreaddir('some/dir',{ onSymbolicLink }));When true, the realpath of the file is returned in the result. This can be used in combination with other options, like basename or relative.
Type: boolean
Default: undefined
Example
console.log(awaitreaddir('some/dir',{realpath: true}));Type: function
Type: string
Type: boolean
Default: undefined
Example
constfiles=awaitreaddir('some/dir',{recursive: true});console.log(files);Returns the first directory level of symbolic links. Use options.follow to recursively follow symlinks.
Type: boolean
Default: undefined
Example
console.log(awaitreaddir('some/dir',{symlinks: true}));Return only unique file paths. Only needed when options.realpath is true.
Type: boolean
Default: undefined
Example
console.log(awaitreaddir('some/dir',{unique: true}));Use the onFile option to operate on files as they are read from the file system, before they are pushed onto the results array.
This allows you to pricisely control which files are returned.
(Note that even when you specify that files should be returned as paths rather than objects, all functions passed on the options will receive files as objects, so that you may manipulate the paths that are returned however you need to)
constreaddir=require('@folder/readdir');constisMatch=file=>true;module.exports=async(dir,options)=>{constopts={absolute: true,recursive: true,objects: true, ...options};constfiles=[];constonFile=file=>{if(isMatch(file)){files.push(file);}};awaitreaddir(dir,{ ...opts, onFile });returnfiles;};Files and directories
The onFile option does not receive dir objects, only dirents (files). If you need both files and directories, you can do the following:
constreaddir=require('@folder/readdir');constisMatch=file=>true;module.exports=async(dir,options)=>{constopts={recursive: true,objects: true, ...options};constfiles=[];constonDirectory=file=>{if(file.name==='node_modules'){file.recurse=false;}};constonFile=file=>{if(isMatch(file)){files.push(file);}};awaitreaddir(dir,{ ...opts, onFile, onDirectory });returnfiles;};Or you can use onEach (which gives you each file before it has been determined whether or not the file will be returned based on other criteria and options. this allows you to override default behavior in a granular way), or onPush (which gives you a file that is going to be returned in the results array).
Here, we only show onEach, since it's identical to onPush in terms of usage.
constreaddir=require('@folder/readdir');constignore=['node_modules','.git'];constisIgnored=file=>ignore.includes(file.nane);module.exports=async(dir,options)=>{constopts={recursive: true,objects: true, ...options};constfiles=[];constonEach=file=>{if(file.isDirectory()){file.recurse=!isIgnored(file);}else{files.push(file);}};awaitreaddir(dir,{ ...opts, onFile, onEach });returnfiles;};(Note that only the benchmarks against fdir are included here since that library claims to be the fastest)
To run the benchmarks yourself, you'll need to cd into the bench folder and run $ npm i. Run the recursive-large benchmarks last, and before you run them cd into bench/fixtures and do $ npm i.
Specs
- CPU: Intel® Core™ i9-9980HK 2.4GHz
- Cores: 16 (8 Physical)
- RAM: 64GB
- Disk: Apple APPLE SSD AP2048N 1864GB NVMe (PCIe x4)
- OS: macOS macOS Big Sur (darwin)
- Kernel: 20.3.0 x64
- Node: v15.14.0
- V8: 8.6.395.17-node.28
# single directory (~5-10 files)
@folder/readdir x 24,938 ops/sec (124,693 runs sampled)
fdir x 24,771 ops/sec (123,858 runs sampled)
# recursive ~220 files
@folder/readdir x 1,915 ops/sec (9,576 runs sampled)
fdir x 1,850 ops/sec (9,253 runs sampled)
# recursive ~2,700 files
@folder/readdir x 155 ops/sec (780 runs sampled)
fdir x 145 ops/sec (730 runs sampled)
# recursive ~57,200 files (just gatsby!)
@folder/readdir x 11 ops/sec (57 runs sampled)
fdir x 10 ops/sec (54 runs sampled)
Contributing
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
Running Tests
Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
$ npm install && npm testBuilding docs
(This project's readme.md is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)
To generate the readme, run the following command:
$ npm install -g verbose/verb#dev verb-generate-readme && verbJon Schlinkert
Copyright © 2021, Jon Schlinkert. Released under the MIT License.
This file was generated by verb-generate-readme, v0.8.0, on April 19, 2021.