upath

What is upath?

The 'upath' npm package is a utility for working with file and directory paths across different operating systems. It provides a consistent API for handling paths, ensuring compatibility between Windows, macOS, and Linux.

What are upath's main functionalities?

Normalization

The 'normalize' function converts a given path to a consistent format, replacing backslashes with forward slashes and resolving '..' and '.' segments.

const upath = require('upath');
const normalizedPath = upath.normalize('foo\bar//baz/asdf/quux/..');
console.log(normalizedPath); // Outputs: 'foo/bar/baz/asdf'

Joining Paths

The 'join' function concatenates multiple path segments into a single path, ensuring the correct separators are used.

const upath = require('upath');
const joinedPath = upath.join('foo', 'bar', 'baz/asdf', 'quux', '..');
console.log(joinedPath); // Outputs: 'foo/bar/baz/asdf'

Resolving Paths

The 'resolve' function computes the absolute path by resolving '..' and '.' segments and considering the current working directory.

const upath = require('upath');
const resolvedPath = upath.resolve('foo/bar', '/tmp/file/', '..', 'a/../subfile');
console.log(resolvedPath); // Outputs: '/tmp/subfile'

Getting Directory Name

The 'dirname' function returns the directory name of a given path.

const upath = require('upath');
const dirName = upath.dirname('/foo/bar/baz/asdf/quux');
console.log(dirName); // Outputs: '/foo/bar/baz/asdf'

Getting Base Name

The 'basename' function returns the last portion of a path, typically the file name.

const upath = require('upath');
const baseName = upath.basename('/foo/bar/baz/asdf/quux.html');
console.log(baseName); // Outputs: 'quux.html'

Getting Extension Name

The 'extname' function returns the extension of the path, from the last occurrence of the '.' character to the end of the string.

const upath = require('upath');
const extName = upath.extname('/foo/bar/baz/asdf/quux.html');
console.log(extName); // Outputs: '.html'

Other packages similar to upath

path

The 'path' module is a built-in Node.js module that provides utilities for working with file and directory paths. It offers similar functionalities to 'upath' but does not normalize paths to a consistent format across different operating systems.

path-posix

The 'path-posix' module is a subset of the Node.js 'path' module that specifically handles POSIX (Unix-like) paths. It is useful for environments where only POSIX paths are needed, but it does not handle Windows paths.

path-browserify

The 'path-browserify' module is a port of the Node.js 'path' module for use in browser environments. It provides similar functionalities but is designed to work within the constraints of browser-based JavaScript.

README

upath v2.0.1

A drop-in replacement / proxy to nodejs's path that:

• Replaces the windows \ with the unix / in all string params & results. This has significant positives - see below.

• Adds filename extensions functions addExt, trimExt, removeExt, changeExt, and defaultExt.

• Add a normalizeSafe function to preserve any meaningful leading ./ & a normalizeTrim which additionally trims any useless ending /.

• Plus a helper toUnix that simply converts \ to / and consolidates duplicates.

Useful note: these docs are actually auto generated from specs, running on Linux.

Notes:

• upath.sep is set to '/' for seamless replacement (as of 1.0.3).

• upath has no runtime dependencies, except built-in path (as of 1.0.4)

• travis-ci tested in node versions 8 to 14 (on linux)

• Also tested on Windows / node@12.18.0 (without CI)

History brief:

• 1.x : Initial release and various features / fixes

• 2.0.0 : Adding UNC paths support - see https://github.com/anodynos/upath/pull/38

Why ?

Normal path doesn't convert paths to a unified format (ie /) before calculating paths (normalize, join), which can lead to numerous problems. Also path joining, normalization etc on the two formats is not consistent, depending on where it runs. Running path on Windows yields different results than when it runs on Linux / Mac.

In general, if you code your paths logic while developing on Unix/Mac and it runs on Windows, you may run into problems when using path.

Note that using Unix / on Windows works perfectly inside nodejs (and other languages), so there's no reason to stick to the Windows legacy at all.

Examples / specs

Check out the different (improved) behavior to vanilla path:

`upath.normalize(path)`        --returns-->

      ✓ `'c:/windows/nodejs/path'`         --->      `'c:/windows/nodejs/path'`  // equal to `path.normalize()`
      ✓ `'c:/windows/../nodejs/path'`      --->              `'c:/nodejs/path'`  // equal to `path.normalize()`
      ✓ `'c:\\windows\\nodejs\\path'`      --->      `'c:/windows/nodejs/path'`  // `path.normalize()` gives `'c:\windows\nodejs\path'`
      ✓ `'c:\\windows\\..\\nodejs\\path'`  --->              `'c:/nodejs/path'`  // `path.normalize()` gives `'c:\windows\..\nodejs\path'`
      ✓ `'/windows\\unix/mixed'`           --->         `'/windows/unix/mixed'`  // `path.normalize()` gives `'/windows\unix/mixed'`
      ✓ `'\\windows//unix/mixed'`          --->         `'/windows/unix/mixed'`  // `path.normalize()` gives `'\windows/unix/mixed'`
      ✓ `'\\windows\\..\\unix/mixed/'`     --->                `'/unix/mixed/'`  // `path.normalize()` gives `'\windows\..\unix/mixed/'`
    

Joining paths can also be a problem:

`upath.join(paths...)`        --returns-->

      ✓ `'some/nodejs/deep', '../path'`       --->       `'some/nodejs/path'`  // equal to `path.join()`
      ✓ `'some/nodejs\\windows', '../path'`   --->       `'some/nodejs/path'`  // `path.join()` gives `'some/path'`
      ✓ `'some\\windows\\only', '..\\path'`   --->      `'some/windows/path'`  // `path.join()` gives `'some\windows\only/..\path'`
    

Parsing with path.parse() should also be consistent across OSes:

upath.parse(path) --returns-->

      ✓ `'c:\Windows\Directory\somefile.ext'`      ---> `{ root: '', dir: 'c:/Windows/Directory', base: 'somefile.ext', ext: '.ext', name: 'somefile'

} //path.parse()gives'{ root: '', dir: '', base: 'c:\Windows\Directory\somefile.ext', ext: '.ext', name: 'c:\Windows\Directory\somefile' }' ✓'/root/of/unix/somefile.ext' --->{ root: '/', dir: '/root/of/unix', base: 'somefile.ext', ext: '.ext', name: 'somefile' } // equal topath.parse()`

Added functions

upath.toUnix(path)

Just converts all `` to / and consolidates duplicates, without performing any normalization.

Examples / specs

`upath.toUnix(path)`        --returns-->

    ✓ `'.//windows\//unix//mixed////'`      --->         `'./windows/unix/mixed/'`
    ✓ `'..///windows\..\\unix/mixed'`       --->      `'../windows/../unix/mixed'`
  

upath.normalizeSafe(path)

Exactly like path.normalize(path), but it keeps the first meaningful ./ or //.

Note that the unix / is returned everywhere, so windows \ is always converted to unix /.

Examples / specs & how it differs from vanilla path

`upath.normalizeSafe(path)`        --returns-->

    ✓ `''`                               --->                              `'.'`  // equal to `path.normalize()`
    ✓ `'.'`                              --->                              `'.'`  // equal to `path.normalize()`
    ✓ `'./'`                             --->                             `'./'`  // equal to `path.normalize()`
    ✓ `'.//'`                            --->                             `'./'`  // equal to `path.normalize()`
    ✓ `'.\\'`                            --->                             `'./'`  // `path.normalize()` gives `'.\'`
    ✓ `'.\\//'`                          --->                             `'./'`  // `path.normalize()` gives `'.\/'`
    ✓ `'./..'`                           --->                             `'..'`  // equal to `path.normalize()`
    ✓ `'.//..'`                          --->                             `'..'`  // equal to `path.normalize()`
    ✓ `'./../'`                          --->                            `'../'`  // equal to `path.normalize()`
    ✓ `'.\\..\\'`                        --->                            `'../'`  // `path.normalize()` gives `'.\..\'`
    ✓ `'./../dep'`                       --->                         `'../dep'`  // equal to `path.normalize()`
    ✓ `'../dep'`                         --->                         `'../dep'`  // equal to `path.normalize()`
    ✓ `'../path/dep'`                    --->                    `'../path/dep'`  // equal to `path.normalize()`
    ✓ `'../path/../dep'`                 --->                         `'../dep'`  // equal to `path.normalize()`
    ✓ `'dep'`                            --->                            `'dep'`  // equal to `path.normalize()`
    ✓ `'path//dep'`                      --->                       `'path/dep'`  // equal to `path.normalize()`
    ✓ `'./dep'`                          --->                          `'./dep'`  // `path.normalize()` gives `'dep'`
    ✓ `'./path/dep'`                     --->                     `'./path/dep'`  // `path.normalize()` gives `'path/dep'`
    ✓ `'./path/../dep'`                  --->                          `'./dep'`  // `path.normalize()` gives `'dep'`
    ✓ `'.//windows\\unix/mixed/'`        --->          `'./windows/unix/mixed/'`  // `path.normalize()` gives `'windows\unix/mixed/'`
    ✓ `'..//windows\\unix/mixed'`        --->          `'../windows/unix/mixed'`  // `path.normalize()` gives `'../windows\unix/mixed'`
    ✓ `'windows\\unix/mixed/'`           --->            `'windows/unix/mixed/'`  // `path.normalize()` gives `'windows\unix/mixed/'`
    ✓ `'..//windows\\..\\unix/mixed'`    --->                  `'../unix/mixed'`  // `path.normalize()` gives `'../windows\..\unix/mixed'`
    ✓ `'\\\\server\\share\\file'`        --->            `'//server/share/file'`  // `path.normalize()` gives `'\\server\share\file'`
    ✓ `'//server/share/file'`            --->            `'//server/share/file'`  // `path.normalize()` gives `'/server/share/file'`
    ✓ `'\\\\?\\UNC\\server\\share\\file'` --->      `'//?/UNC/server/share/file'`  // `path.normalize()` gives `'\\?\UNC\server\share\file'`
    ✓ `'\\\\LOCALHOST\\c$\\temp\\file'`  --->       `'//LOCALHOST/c$/temp/file'`  // `path.normalize()` gives `'\\LOCALHOST\c$\temp\file'`
    ✓ `'\\\\?\\c:\\temp\\file'`          --->               `'//?/c:/temp/file'`  // `path.normalize()` gives `'\\?\c:\temp\file'`
    ✓ `'\\\\.\\c:\\temp\\file'`          --->               `'//./c:/temp/file'`  // `path.normalize()` gives `'\\.\c:\temp\file'`
    ✓ `'//./c:/temp/file'`               --->               `'//./c:/temp/file'`  // `path.normalize()` gives `'/c:/temp/file'`
    ✓ `'////\\.\\c:/temp\\//file'`       --->               `'//./c:/temp/file'`  // `path.normalize()` gives `'/\.\c:/temp\/file'`
  

upath.normalizeTrim(path)

Exactly like path.normalizeSafe(path), but it trims any useless ending /.

Examples / specs

`upath.normalizeTrim(path)`        --returns-->

    ✓ `'./'`                          --->                         `'.'`  // `upath.normalizeSafe()` gives `'./'`
    ✓ `'./../'`                       --->                        `'..'`  // `upath.normalizeSafe()` gives `'../'`
    ✓ `'./../dep/'`                   --->                    `'../dep'`  // `upath.normalizeSafe()` gives `'../dep/'`
    ✓ `'path//dep\\'`                 --->                  `'path/dep'`  // `upath.normalizeSafe()` gives `'path/dep/'`
    ✓ `'.//windows\\unix/mixed/'`     --->      `'./windows/unix/mixed'`  // `upath.normalizeSafe()` gives `'./windows/unix/mixed/'`
  

upath.joinSafe([path1][, path2][, ...])

Exactly like path.join(), but it keeps the first meaningful ./ or //.

Note that the unix / is returned everywhere, so windows \ is always converted to unix /.

Examples / specs & how it differs from vanilla path

`upath.joinSafe(path)`        --returns-->

    ✓ `'some/nodejs/deep', '../path'`                --->           `'some/nodejs/path'`  // equal to `path.join()`
    ✓ `'./some/local/unix/', '../path'`              --->          `'./some/local/path'`  // `path.join()` gives `'some/local/path'`
    ✓ `'./some\\current\\mixed', '..\\path'`         --->        `'./some/current/path'`  // `path.join()` gives `'some\current\mixed/..\path'`
    ✓ `'../some/relative/destination', '..\\path'`   --->      `'../some/relative/path'`  // `path.join()` gives `'../some/relative/destination/..\path'`
    ✓ `'\\\\server\\share\\file', '..\\path'`        --->        `'//server/share/path'`  // `path.join()` gives `'\\server\share\file/..\path'`
    ✓ `'\\\\.\\c:\\temp\\file', '..\\path'`          --->           `'//./c:/temp/path'`  // `path.join()` gives `'\\.\c:\temp\file/..\path'`
    ✓ `'//server/share/file', '../path'`             --->        `'//server/share/path'`  // `path.join()` gives `'/server/share/path'`
    ✓ `'//./c:/temp/file', '../path'`                --->           `'//./c:/temp/path'`  // `path.join()` gives `'/c:/temp/path'`

Added functions for filename extension manipulation.

Happy notes:

In all functions you can:

• use both .ext & ext - the dot . on the extension is always adjusted correctly.

• omit the ext param (pass null/undefined/empty string) and the common sense thing will happen.

• ignore specific extensions from being considered as valid ones (eg .min, .dev .aLongExtIsNotAnExt etc), hence no trimming or replacement takes place on them.

upath.addExt(filename, [ext])

Adds .ext to filename, but only if it doesn't already have the exact extension.

Examples / specs

`upath.addExt(filename, 'js')`     --returns-->

    ✓ `'myfile/addExt'`           --->           `'myfile/addExt.js'`
    ✓ `'myfile/addExt.txt'`       --->       `'myfile/addExt.txt.js'`
    ✓ `'myfile/addExt.js'`        --->           `'myfile/addExt.js'`
    ✓ `'myfile/addExt.min.'`      --->      `'myfile/addExt.min..js'`
    

It adds nothing if no ext param is passed.

`upath.addExt(filename)`           --returns-->

      ✓ `'myfile/addExt'`           --->              `'myfile/addExt'`
      ✓ `'myfile/addExt.txt'`       --->          `'myfile/addExt.txt'`
      ✓ `'myfile/addExt.js'`        --->           `'myfile/addExt.js'`
      ✓ `'myfile/addExt.min.'`      --->         `'myfile/addExt.min.'`
  

upath.trimExt(filename, [ignoreExts], [maxSize=7])

Trims a filename's extension.

• Extensions are considered to be up to maxSize chars long, counting the dot (defaults to 7).

• An Array of ignoreExts (eg ['.min']) prevents these from being considered as extension, thus are not trimmed.

Examples / specs

`upath.trimExt(filename)`          --returns-->

    ✓ `'my/trimedExt.txt'`             --->                 `'my/trimedExt'`
    ✓ `'my/trimedExt'`                 --->                 `'my/trimedExt'`
    ✓ `'my/trimedExt.min'`             --->                 `'my/trimedExt'`
    ✓ `'my/trimedExt.min.js'`          --->             `'my/trimedExt.min'`
    ✓ `'../my/trimedExt.longExt'`      --->      `'../my/trimedExt.longExt'`
    

It is ignoring .min & .dev as extensions, and considers exts with up to 8 chars.

`upath.trimExt(filename, ['min', '.dev'], 8)`          --returns-->

      ✓ `'my/trimedExt.txt'`              --->                  `'my/trimedExt'`
      ✓ `'my/trimedExt.min'`              --->              `'my/trimedExt.min'`
      ✓ `'my/trimedExt.dev'`              --->              `'my/trimedExt.dev'`
      ✓ `'../my/trimedExt.longExt'`       --->               `'../my/trimedExt'`
      ✓ `'../my/trimedExt.longRExt'`      --->      `'../my/trimedExt.longRExt'`
  

upath.removeExt(filename, ext)

Removes the specific ext extension from filename, if it has it. Otherwise it leaves it as is. As in all upath functions, it be .ext or ext.

Examples / specs

`upath.removeExt(filename, '.js')`          --returns-->

    ✓ `'removedExt.js'`          --->          `'removedExt'`
    ✓ `'removedExt.txt.js'`      --->      `'removedExt.txt'`
    ✓ `'notRemoved.txt'`         --->      `'notRemoved.txt'`
  

It does not care about the length of exts.

`upath.removeExt(filename, '.longExt')`          --returns-->

    ✓ `'removedExt.longExt'`          --->          `'removedExt'`
    ✓ `'removedExt.txt.longExt'`      --->      `'removedExt.txt'`
    ✓ `'notRemoved.txt'`              --->      `'notRemoved.txt'`
  

upath.changeExt(filename, [ext], [ignoreExts], [maxSize=7])

Changes a filename's extension to ext. If it has no (valid) extension, it adds it.

• Valid extensions are considered to be up to maxSize chars long, counting the dot (defaults to 7).

• An Array of ignoreExts (eg ['.min']) prevents these from being considered as extension, thus are not changed - the new extension is added instead.

Examples / specs

`upath.changeExt(filename, '.js')`  --returns-->

    ✓ `'my/module.min'`            --->                `'my/module.js'`
    ✓ `'my/module.coffee'`         --->                `'my/module.js'`
    ✓ `'my/module'`                --->                `'my/module.js'`
    ✓ `'file/withDot.'`            --->             `'file/withDot.js'`
    ✓ `'file/change.longExt'`      --->      `'file/change.longExt.js'`
    

If no ext param is given, it trims the current extension (if any).

`upath.changeExt(filename)`        --returns-->

      ✓ `'my/module.min'`            --->                   `'my/module'`
      ✓ `'my/module.coffee'`         --->                   `'my/module'`
      ✓ `'my/module'`                --->                   `'my/module'`
      ✓ `'file/withDot.'`            --->                `'file/withDot'`
      ✓ `'file/change.longExt'`      --->         `'file/change.longExt'`
    

It is ignoring .min & .dev as extensions, and considers exts with up to 8 chars.

`upath.changeExt(filename, 'js', ['min', '.dev'], 8)`        --returns-->

      ✓ `'my/module.coffee'`          --->                 `'my/module.js'`
      ✓ `'file/notValidExt.min'`      --->      `'file/notValidExt.min.js'`
      ✓ `'file/notValidExt.dev'`      --->      `'file/notValidExt.dev.js'`
      ✓ `'file/change.longExt'`       --->               `'file/change.js'`
      ✓ `'file/change.longRExt'`      --->      `'file/change.longRExt.js'`
  

upath.defaultExt(filename, [ext], [ignoreExts], [maxSize=7])

Adds .ext to filename, only if it doesn't already have any old extension.

• (Old) extensions are considered to be up to maxSize chars long, counting the dot (defaults to 7).

• An Array of ignoreExts (eg ['.min']) will force adding default .ext even if one of these is present.

Examples / specs

`upath.defaultExt(filename, 'js')`   --returns-->

    ✓ `'fileWith/defaultExt'`              --->              `'fileWith/defaultExt.js'`
    ✓ `'fileWith/defaultExt.js'`           --->              `'fileWith/defaultExt.js'`
    ✓ `'fileWith/defaultExt.min'`          --->             `'fileWith/defaultExt.min'`
    ✓ `'fileWith/defaultExt.longExt'`      --->      `'fileWith/defaultExt.longExt.js'`
    

If no ext param is passed, it leaves filename intact.

`upath.defaultExt(filename)`       --returns-->

      ✓ `'fileWith/defaultExt'`              --->                 `'fileWith/defaultExt'`
      ✓ `'fileWith/defaultExt.js'`           --->              `'fileWith/defaultExt.js'`
      ✓ `'fileWith/defaultExt.min'`          --->             `'fileWith/defaultExt.min'`
      ✓ `'fileWith/defaultExt.longExt'`      --->         `'fileWith/defaultExt.longExt'`
    

It is ignoring .min & .dev as extensions, and considers exts with up to 8 chars.

`upath.defaultExt(filename, 'js', ['min', '.dev'], 8)` --returns-->

      ✓ `'fileWith/defaultExt'`               --->               `'fileWith/defaultExt.js'`
      ✓ `'fileWith/defaultExt.min'`           --->           `'fileWith/defaultExt.min.js'`
      ✓ `'fileWith/defaultExt.dev'`           --->           `'fileWith/defaultExt.dev.js'`
      ✓ `'fileWith/defaultExt.longExt'`       --->          `'fileWith/defaultExt.longExt'`
      ✓ `'fileWith/defaultExt.longRext'`      --->      `'fileWith/defaultExt.longRext.js'`

Copyright(c) 2014-2020 Angelos Pikoulas ([e-mail])

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.