js: var fs = require('fs') var newPath = "E:\\Thevan"; var oldPath = "E:\\Thevan\\Docs\\something. mp4"; exports. uploadFile = function (req, res) { fs. readFile(oldPath, function(err, data) { fs.
The fs. mkdirSync() method is used to create a directory Synchronously.
__dirname: It is a local variable that returns the directory name of the current module. It returns the folder path of the current JavaScript file.
NodeJS version 10.12.0
has added a native support for both mkdir
and mkdirSync
to create a directory recursively with recursive: true
option as the following:
fs.mkdirSync(targetDir, { recursive: true });
And if you prefer fs Promises API
, you can write
fs.promises.mkdir(targetDir, { recursive: true });
Create directories recursively if they do not exist! (Zero dependencies)
const fs = require('fs');
const path = require('path');
function mkDirByPathSync(targetDir, { isRelativeToScript = false } = {}) {
const sep = path.sep;
const initDir = path.isAbsolute(targetDir) ? sep : '';
const baseDir = isRelativeToScript ? __dirname : '.';
return targetDir.split(sep).reduce((parentDir, childDir) => {
const curDir = path.resolve(baseDir, parentDir, childDir);
try {
fs.mkdirSync(curDir);
} catch (err) {
if (err.code === 'EEXIST') { // curDir already exists!
return curDir;
}
// To avoid `EISDIR` error on Mac and `EACCES`-->`ENOENT` and `EPERM` on Windows.
if (err.code === 'ENOENT') { // Throw the original parentDir error on curDir `ENOENT` failure.
throw new Error(`EACCES: permission denied, mkdir '${parentDir}'`);
}
const caughtErr = ['EACCES', 'EPERM', 'EISDIR'].indexOf(err.code) > -1;
if (!caughtErr || caughtErr && curDir === path.resolve(targetDir)) {
throw err; // Throw if it's just the last created dir.
}
}
return curDir;
}, initDir);
}
// Default, make directories relative to current working directory.
mkDirByPathSync('path/to/dir');
// Make directories relative to the current script.
mkDirByPathSync('path/to/dir', {isRelativeToScript: true});
// Make directories with an absolute path.
mkDirByPathSync('/path/to/dir');
Try It!
EISDIR
for Mac and EPERM
and EACCES
for Windows. Thanks to all the reporting comments by @PediT., @JohnQ, @deed02392, @robyoder and @Almenon.{isRelativeToScript: true}
.path.sep
and path.resolve()
, not just /
concatenation, to avoid cross-platform issues.fs.mkdirSync
and handling the error with try/catch
if thrown to handle race conditions: another process may add the file between the calls to fs.existsSync()
and fs.mkdirSync()
and causes an exception.
if (!fs.existsSync(curDir) fs.mkdirSync(curDir);
. But this is an anti-pattern that leaves the code vulnerable to race conditions. Thanks to @GershomMaes comment about the directory existence check.A more robust answer is to use use mkdirp.
var mkdirp = require('mkdirp');
mkdirp('/path/to/dir', function (err) {
if (err) console.error(err)
else console.log('dir created')
});
Then proceed to write the file into the full path with:
fs.writeFile ('/path/to/dir/file.dat'....
One option is to use shelljs module
npm install shelljs
var shell = require('shelljs');
shell.mkdir('-p', fullPath);
From that page:
Available options:
p: full path (will create intermediate dirs if necessary)
As others have noted, there's other more focused modules. But, outside of mkdirp, it has tons of other useful shell operations (like which, grep etc...) and it works on windows and *nix
Edit: comments suggest this doesn't work on systems that don't have mkdir cli instances. That is not the case. That's the point shelljs - create a portable cross platform set of shell like functions. It works on even windows.
fs-extra adds file system methods that aren't included in the native fs module. It is a drop in replacement for fs.
Install fs-extra
$ npm install --save fs-extra
const fs = require("fs-extra");
// Make sure the output directory is there.
fs.ensureDirSync(newDest);
There are sync and async options.
https://github.com/jprichardson/node-fs-extra/blob/master/docs/ensureDir.md
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