#!/usr/bin/env node

/**

* @license Apache-2.0

*

* Copyright (c) 2017 The Stdlib Authors.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

/*

* Script to print the Node.js directory path.

*

* ## Notes

*

* - When invoking this script, be sure to set the `NODE_PATH` environment variable to include project package directory. Otherwise, if the `NODE_PATH` does not include the project package directory, imported modules may not be resolved.

*/

'use strict';

// MODULES //

var resolve = require( 'path' ).resolve;

var isWindows = require( '@stdlib/assert/is-windows' );

var dirname = require( '@stdlib/utils/dirname' );

// MAIN //

/**

* Finds the Node.js directory path.

*

* ## Notes

*

* - We resolve the directory based on the absolute path of the executable which started the Node.js process (e.g., '/usr/local/bin/node').

*

* @private

* @returns {string} directory path

*/

function main() {

if ( isWindows ) {

return dirname( process.execPath );

}

return resolve( process.execPath, '..', '..' );

}

console.log( main() );