README
Read Directory
Read the contents of a directory.
Installation
npm install @stdlib/fs-read-dir
Usage
var readDir = require( '@stdlib/fs-read-dir' );
readDir( path, clbk )
Asynchronously reads the contents of a directory.
readDir( __dirname, onRead );
function onRead( error, data ) {
if ( error ) {
console.error( error );
} else {
console.log( data );
// => [...]
}
}
readDir.sync( path )
Synchronously reads the contents of a directory.
var out = readDir.sync( __dirname );
if ( out instanceof Error ) {
throw out;
}
console.log( out );
// => [...]
Notes
The difference between this module and
fs.readdirSync()
is thatfs.readdirSync()
will throw if anerror
is encountered (e.g., if given a non-existentpath
) and this module will return anerror
. Hence, the following anti-patternvar fs = require( 'fs' ); var dir = '/path/to/dir'; // Check for existence to prevent an error being thrown... if ( fs.existsSync( dir ) ) { dir = fs.readdirSync( dir ); }
can be replaced by an approach which addresses existence via
error
handling.var readDir = require( '@stdlib/fs-read-dir' ); var dir = '/path/to/dir'; // Explicitly handle the error... dir = readDir.sync( dir ); if ( dir instanceof Error ) { // You choose what to do... throw dir; }
Examples
var readDir = require( '@stdlib/fs-read-dir' );
/* Sync */
var out = readDir.sync( __dirname );
// returns <Array>
console.log( out instanceof Error );
// => false
out = readDir.sync( 'beepboop' );
// returns <Error>
console.log( out instanceof Error );
// => true
/* Async */
readDir( __dirname, onRead );
readDir( 'beepboop', onRead );
function onRead( error, data ) {
if ( error ) {
if ( error.code === 'ENOENT' ) {
console.error( 'Directory does not exist.' );
} else {
throw error;
}
} else {
console.log( data );
}
}
CLI
Installation
To use the module as a general utility, install the module globally
npm install -g @stdlib/fs-read-dir
Usage
Usage: read-dir [options] <dirpath>
Options:
-h, --help Print this message.
-V, --version Print the package version.
Notes
- Relative paths are resolved relative to the current working directory.
- Errors are written to
stderr
. - Directory contents are written to
stdout
.
Examples
$ read-dir ./../
...
...
Notice
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2022. The Stdlib Authors.