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@stdlib/fs-resolve-parent-path

v0.2.1

Published

Resolve a path by walking parent directories.

Downloads

2,495,085

Readme

Resolve Parent Path

NPM version Build Status Coverage Status

Resolve a path by walking parent directories.

Installation

npm install @stdlib/fs-resolve-parent-path

Usage

var resolveParentPath = require( '@stdlib/fs-resolve-parent-path' );

resolveParentPath( path[, options], clbk )

Asynchronously resolves a path by walking parent directories.

resolveParentPath( 'package.json', onPath );

function onPath( error, path ) {
    if ( error ) {
        throw error;
    }
    console.log( path );
    // => '...'
}

The function accepts the following options:

  • dir: base directory from which to begin walking. May be either an absolute path or a path relative to the current working directory.

By default, the function begins walking from the current working directory. To specify an alternative directory, set the dir option.

var opts = {
    'dir': __dirname
};
resolveParentPath( 'package.json', opts, onPath );

function onPath( error, path ) {
    if ( error ) {
        throw error;
    }
    console.log( path );
    // => '...'
}

resolveParentPath.sync( path[, options] )

Synchronously resolves a path by walking parent directories.

var path = resolveParentPath.sync( 'package.json' );
// returns '...'

The function accepts the same options as resolveParentPath().

Notes

  • If unable to resolve a path, both functions return null.
  • This implementation is not similar in functionality to core path.resolve. The latter performs string manipulation to generate a full path. This implementation walks parent directories to perform a search, thereby touching the file system. Accordingly, this implementation resolves a real absolute file path and is intended for use when a target's location in a parent directory is unknown relative to a child directory; e.g., when wanting to find a package root from deep within a package directory.

Examples

var resolveParentPath = require( '@stdlib/fs-resolve-parent-path' );

var opts = {
    'dir': __dirname
};

/* Sync */

var out = resolveParentPath.sync( 'package.json', opts );
// returns '...'

out = resolveParentPath.sync( 'non_existent_basename' );
// returns null

/* Async */

resolveParentPath( 'package.json', opts, onPath );
resolveParentPath( './../non_existent_path', onPath );

function onPath( error, path ) {
    if ( error ) {
        throw error;
    }
    console.log( path );
}

See Also


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

Chat


License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.