Test if a value is an absolute path.
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> Test if a value is an absolute path.
``bash`
npm install @stdlib/assert-is-absolute-path
`javascript`
var isAbsolutePath = require( '@stdlib/assert-is-absolute-path' );
#### isAbsolutePath( value )
Tests if a value is an absolute path.
`javascript
var IS_WINDOWS = require( '@stdlib/assert-is-windows' );
var bool;
if ( IS_WINDOWS ) {
bool = isAbsolutePath( 'C:\\foo\\bar\\baz' );
// returns true
} else {
bool = isAbsolutePath( '/foo/bar/baz' );
// returns true
}
`
#### isAbsolutePath.posix( value )
Tests if a value is a POSIX absolute path.
`javascript
var bool = isAbsolutePath.posix( '/foo/bar/baz' );
// returns true
bool = isAbsolutePath.posix( 'foo/bar/baz' );
// returns false
`
#### isAbsolutePath.win32( value )
Tests if a value is a Windows absolute path.
`javascript
var bool = isAbsolutePath.win32( 'C:\\foo\\bar\\baz' );
// returns true
bool = isAbsolutePath.win32( 'foo\\bar\\baz' );
// returns false
`
- isAbsolutePath() is platform-specific. On Windows platforms, the function is equal to isAbsolutePath.win32(). On POSIX platforms, the function is equal to isAbsolutePath.posix().
`javascript
var isAbsolutePath = require( '@stdlib/assert-is-absolute-path' );
var bool = isAbsolutePath.posix( '/foo/bar/baz' );
// returns true
bool = isAbsolutePath.posix( '/foo/..' );
// returns true
bool = isAbsolutePath.posix( 'foo/' );
// returns false
bool = isAbsolutePath.posix( 'foo' );
// returns false
bool = isAbsolutePath.posix( '.' );
// returns false
bool = isAbsolutePath.posix( '' );
// returns false
bool = isAbsolutePath.win32( 'C:\\foo\\bar\\baz' );
// returns true
bool = isAbsolutePath.win32( '//server' );
// returns true
bool = isAbsolutePath.win32( '\\\\server' );
// returns true
bool = isAbsolutePath.win32( 'C:/foo/bar/baz' );
// returns true
bool = isAbsolutePath.win32( '/foo/..' );
// returns true
bool = isAbsolutePath.win32( 'foo\\bar\\baz' );
// returns false
bool = isAbsolutePath.win32( 'foo/bar/baz' );
// returns false
bool = isAbsolutePath.win32( 'foo/..' );
// returns false
bool = isAbsolutePath.win32( '.' );
// returns false
bool = isAbsolutePath.win32( '' );
// returns false
`
- [@stdlib/assert-is-absolute-path-cli][@stdlib/assert-is-absolute-path-cli]: CLI package for use as a command-line utility.
- [@stdlib/assert-is-relative-path][@stdlib/assert/is-relative-path]: test if a value is a relative path.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
[@stdlib/assert-is-absolute-path-cli]: https://www.npmjs.com/package/@stdlib/assert-is-absolute-path-cli
[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-absolute-path.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-is-absolute-path
[test-image]: https://github.com/stdlib-js/assert-is-absolute-path/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/assert-is-absolute-path/actions/workflows/test.yml?query=branch:v0.2.3
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-absolute-path/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/assert-is-absolute-path?branch=main
[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg
[chat-url]: https://stdlib.zulipchat.com
[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[cli-section]: https://github.com/stdlib-js/assert-is-absolute-path#cli
[cli-url]: https://github.com/stdlib-js/assert-is-absolute-path/tree/cli
[@stdlib/assert-is-absolute-path]: https://github.com/stdlib-js/assert-is-absolute-path/tree/main
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/assert-is-absolute-path/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-absolute-path/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-absolute-path/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-absolute-path/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-absolute-path/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-absolute-path/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-absolute-path/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-absolute-path/main/LICENSE
[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams
[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
[@stdlib/assert/is-relative-path]: https://www.npmjs.com/package/@stdlib/assert-is-relative-path