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README.md
readdirp
Recursive version of fs.readdir. Exposes a stream API and a promise API.
npm install readdirp
const readdirp = require('readdirp');
// Use streams to achieve small RAM & CPU footprint.
// 1) Streams example with for-await.
for await (const entry of readdirp('.')) {
const {path} = entry;
console.log(`${JSON.stringify({path})}`);
}
// 2) Streams example, non for-await.
// Print out all JS files along with their size within the current folder & subfolders.
readdirp('.', {fileFilter: '*.js', alwaysStat: true})
.on('data', (entry) => {
const {path, stats: {size}} = entry;
console.log(`${JSON.stringify({path, size})}`);
})
// Optionally call stream.destroy() in `warn()` in order to abort and cause 'close' to be emitted
.on('warn', error => console.error('non-fatal error', error))
.on('error', error => console.error('fatal error', error))
.on('end', () => console.log('done'));
// 3) Promise example. More RAM and CPU than streams / for-await.
const files = await readdirp.promise('.');
console.log(files.map(file => file.path));
// Other options.
readdirp('test', {
fileFilter: '*.js',
directoryFilter: ['!.git', '!*modules']
// directoryFilter: (di) => di.basename.length === 9
type: 'files_directories',
depth: 1
});
For more examples, check out examples
directory.
API
const stream = readdirp(root[, options])
— Stream API
- Reads given root recursively and returns a
stream
of entry infos - Optionally can be used like
for await (const entry of stream)
with node.js 10+ (asyncIterator
). on('data', (entry) => {})
entry info for every file / dir.on('warn', (error) => {})
non-fatalError
that prevents a file / dir from being processed. Example: inaccessible to the user.on('error', (error) => {})
fatalError
which also ends the stream. Example: illegal options where passed.on('end')
— we are done. Called when all entries were found and no more will be emitted.on('close')
— stream is destroyed viastream.destroy()
. Could be useful if you want to manually abort even on a non fatal error. At that point the stream is no longerreadable
and no more entries, warning or errors are emitted- To learn more about streams, consult the very detailed nodejs streams documentation or the stream-handbook
const entries = await readdirp.promise(root[, options])
— Promise API. Returns a list of entry infos.
First argument is awalys root
, path in which to start reading and recursing into subdirectories.
options
fileFilter: ["*.js"]
: filter to include or exclude files. AFunction
, Glob string or Array of glob strings.- Function: a function that takes an entry info as a parameter and returns true to include or false to exclude the entry
- Glob string: a string (e.g.,
*.js
) which is matched using picomatch, so go there for more information. Globstars (**
) are not supported since specifying a recursive pattern for an already recursive function doesn't make sense. Negated globs (as explained in the minimatch documentation) are allowed, e.g.,!*.txt
matches everything but text files. - Array of glob strings: either need to be all inclusive or all exclusive (negated) patterns otherwise an error is thrown.
['*.json', '*.js']
includes all JavaScript and Json files.['!.git', '!node_modules']
includes all directories except the '.git' and 'node_modules'. - Directories that do not pass a filter will not be recursed into.
directoryFilter: ['!.git']
: filter to include/exclude directories found and to recurse into. Directories that do not pass a filter will not be recursed into.depth: 5
: depth at which to stop recursing even if more subdirectories are foundtype: 'files'
: determines if data events on the stream should be emitted for'files'
(default),'directories'
,'files_directories'
, or'all'
. Setting to'all'
will also include entries for other types of file descriptors like character devices, unix sockets and named pipes.alwaysStat: false
: always returnstats
property for every file. Default isfalse
, readdirp will returnDirent
entries. Setting it totrue
can double readdir execution time - use it only when you need filesize
,mtime
etc. Cannot be enabled on node <10.10.0.lstat: false
: include symlink entries in the stream along with files. Whentrue
,fs.lstat
would be used instead offs.stat
EntryInfo
Has the following properties:
path: 'assets/javascripts/react.js'
: path to the file/directory (relative to given root)fullPath: '/Users/dev/projects/app/assets/javascripts/react.js'
: full path to the file/directory foundbasename: 'react.js'
: name of the file/directorydirent: fs.Dirent
: built-in dir entry object - only withalwaysStat: false
stats: fs.Stats
: built in stat object - only withalwaysStat: true
Changelog
- 3.5 (Oct 13, 2020) disallows recursive directory-based symlinks. Before, it could have entered infinite loop.
- 3.4 (Mar 19, 2020) adds support for directory-based symlinks.
- 3.3 (Dec 6, 2019) stabilizes RAM consumption and enables perf management with
highWaterMark
option. Fixes race conditions related tofor-await
looping. - 3.2 (Oct 14, 2019) improves performance by 250% and makes streams implementation more idiomatic.
- 3.1 (Jul 7, 2019) brings
bigint
support tostat
output on Windows. This is backwards-incompatible for some cases. Be careful. It you use it incorrectly, you'll see "TypeError: Cannot mix BigInt and other types, use explicit conversions". - 3.0 brings huge performance improvements and stream backpressure support.
- Upgrading 2.x to 3.x:
- Signature changed from
readdirp(options)
toreaddirp(root, options)
- Replaced callback API with promise API.
- Renamed
entryType
option totype
- Renamed
entryType: 'both'
to'files_directories'
EntryInfo
- Renamed
stat
tostats
- Emitted only when
alwaysStat: true
dirent
is emitted instead ofstats
by default withalwaysStat: false
- Emitted only when
- Renamed
name
tobasename
- Removed
parentDir
andfullParentDir
properties
- Renamed
- Signature changed from
- Supported node.js versions:
- 3.x: node 8+
- 2.x: node 0.6+
License
Copyright (c) 2012-2019 Thorsten Lorenz, Paul Miller (https://paulmillr.com)
MIT License, see LICENSE file.