An extended, promisified fs drop-in-replacement for Node.js >=7.6
Promise, await and async functionexists function to test file existence.tar archives using tar-stream.tar archivesThe following asynchronous fs methods are promisified and exposed within the fs-magic object. All synchronous functions are ignored because there is no need for them anymore - use await!
const _fsm = require('fs-magic');
// wraper
(async function(){
// get stats
const stats= await _fsm.fstat('myfile.js');
// does the file exists ?
console.log(await _fsm.exists('myfile.js'));
// copy a file, set chmod to 0640
await _fsm.copy('test1.js', 'test2.js', 0o640);
// create directory stucture at once
await _fsm.mkdirp('my/custom/dir/1/2/3', 0o777, true);
// use fs methods
await _fsm.rmdir('mydir');
})();
Description: Copy a single file
Syntax: copy(sourcefile:string, destinationfile:string, mode:int=null)
Example:
// copy a file, set chmod to 0640
await _fsm.copy('test1.js', 'test2.js', 0o640);
Description: Copy multiple files at once
Syntax: bulkCopy(srcset:Array, createDestinationDirs:boolean=true, defaultFilemode:int=0o750, defaultDirmode:int=0o777)
Example:
// list of files to copy
const srcset = [
['source/file1.js', 'destination/subdir/file1.js', 0o644],
['source/file2.js', 'destination/subdir/file2.js', 0o644],
['source/file3.js', 'destination/subdir/x/file3.js', 0o644],
['source/file4.js', 'destination/subdir/x/file4.js', 0o644],
];
// copy files + create destination directories
await _fsm.bulkCopy(srcset, true);
Description: Create a directories recusivly
Syntax: mkdirp(directory:string, mode:int=0o777, recursive:boolean=false)
Example:
// create directory stucture at once
await _fsm.mkdirp('my/custom/dir/1/2/3', 0o777, true);
Description: List all files + directories of given directory recursivly (optional)
Syntax: scandir(directory:string, recursive:boolean=true, absolutePaths:boolean=false)
Example:
// get file + directory list of all files. Use absolute output paths
const [files, dirs] = await _fs.scandir('project/modules', true, true);
Description: Removes all files of a given directory recursivly
Syntax: rmrf(directory:string)
Note: For security reasons, this function does not accept the file system root / or a directory within it like /etc as input
Example:
// remove a project folder
await _fs.rmrf('projects/js1');
Description: Check if a file/directory/link exists
Syntax: exists(filedir:string)
Example:
// does the file exists ?
console.log(await _fsm.exists('myfile.js'));
Description: Check if a item is of type file
Syntax: isFile(filesystemItem:string)
Example:
// is a file ?
console.log(await _fsm.isFile('myfile.js'));
Description: Check if a item is of type directory
Syntax: isDirectory(filesystemItem:string)
Example:
// is a directory ?
console.log(await _fsm.isDirectory('/var/log'));
Description: Check if a item is of type socket
Syntax: isSocket(filesystemItem:string)
Example:
// is a socket ?
console.log(await _fsm.isSocket('/var/run/phpfpm.sock'));
Description: Check if a item is of type symlink
Syntax: isSymlink(filesystemItem:string)
Example:
// is a symlink ?
console.log(await _fsm.isSymlink('/etc/motd'));
Description: Check if a item is of specific type
Syntax: isFileOfType(filename:string, condition:function)
Example:
// check if node is socket
async function isSocket(filename){
return await _fsm.isFileOfType(filename, (stats) => stats.isSocket());
};
Description: Open a fileStream for read
Syntax: FileInputStream(sourcefile:string)
Example:
const _fsm = require('fs-magic');
// copy source file to destination (override it)
async function copy(src, dst, mode=null){
// open file input stream
const istream = await _fsm.FileOutputStream(src);
// write stream content to file
return _fsm.FileOutputStream(istream, dst, mode);
}
Description: Writes given stream into file
Syntax: FileOutputStream(readstream:stream, destinationFilename:string, mode:int=false)
Example:
const _fsm = require('fs-magic');
const _fetch = require('node-fetch');
// fetch remote content
const response = await _fetch('http://example.org/file.gz');
// write stream content to file
await _fsm.FileOutputStream(response.body, dst, mode);
Description: Extracts contents of a .tar archive into given directory using tar-stream
Syntax: untar(inputstream:stream, destinationDirectory:string)
Example:
const _fetch = require('node-fetch');
const _fsm = require('fs-magic');
// fetch remote content
const response = await _fetch('http://example.org/file.tar');
// unpack into currrent directory
let items = await _fsm.untar(response.body, '.');
Description: Extracts contents of a gzip compressed .tar.gz archive into given directory using tar-stream
Syntax: untgz(inputstream:stream, destinationDirectory:string)
Example:
const _fetch = require('node-fetch');
// fetch remote content
const response = await _fetch('http://example.org/file.tar.gz');
// unpack into currrent directory
let items = await _fsm.untgz(response.body, '.');
Description: Compresses a file
Syntax: gzip(input:{string, stream}, destinationFilename:string)
Example:
// compress a file
await _fsm.gzip('./file.txt', './file.gz');
Description: Decompresses a file
Syntax: gunzip(input:{string, stream}, destinationFilename:string)
Example:
// decompress a file
await _fsm.gunzip('./file.gz', './my-file.txt');
// fetch content
const response = await _fetch('http://example.org/file.gz');
// decompress a stream
await _fsm.gunzip(response.body, './file.txt');
Description: Generic File Checksum
Syntax: checksum(filename:string, algorithm:string='sha256', outputFormat:string='hex')
Example:
// sha384 checksum as base64
const sum = await _fsm.checksum('./file.txt', 'sha384', 'base64');
Description: SHA1 File Checksum
Syntax: sha1file(filename:string, outputFormat:string='hex')
Example:
// sha1 checksum as hex
const sum = await _fsm.sha1file('./file.txt');
Description: SHA256 File Checksum
Syntax: sha256file(filename:string, outputFormat:string='hex')
Example:
// sha256 checksum as hex
const sum = await _fsm.sha256file('./file.txt');
Description: SHA384 File Checksum
Syntax: sha384file(filename:string, outputFormat:string='hex')
Example:
// sha384 checksum as buffer
const sum = await _fsm.sha384file('./file.txt', 'raw');
Description: SHA512 File Checksum
Syntax: sha512file(filename:string, outputFormat:string='hex')
Example:
// sha512 checksum as base64
const sum = await _fsm.sha512file('./file.txt', 'base64');
Description: Extended stat function. The function retuns false in case of ENOENT error (file not found)
Syntax: statx(filesystemItem:string)
Example:
// get file stats ?
const stats = await _fsm.statx('/var/log/unknown_file.log');
if (stats !== false){
console.log(stats);
}
Please open a new issue on GitHub
fs-magic is OpenSource and licensed under the Terms of The MIT License
FAQs
An extended, promisified fs drop-in-replacement for Node.js >=7.6
The npm package fs-magic receives a total of 620 weekly downloads. As such, fs-magic popularity was classified as not popular.
We found that fs-magic demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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