114 lines
2.8 KiB
JavaScript
114 lines
2.8 KiB
JavaScript
|
/**
|
||
|
|
* @license Apache-2.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 2018 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
// MODULES //
|
||
|
|
|
||
|
|
var proc = require( 'process' );
|
||
|
|
var getGlobal = require( '@stdlib/utils/global' );
|
||
|
|
var nativeClass = require( '@stdlib/utils/native-class' );
|
||
|
|
var isObject = require( './../../is-plain-object' );
|
||
|
|
var isString = require( './../../is-string' ).isPrimitive;
|
||
|
|
var globalScope = require( './global_scope.js' );
|
||
|
|
|
||
|
|
|
||
|
|
// VARIABLES //
|
||
|
|
|
||
|
|
var Global = getGlobal();
|
||
|
|
var RE = /node|io\.js/;
|
||
|
|
|
||
|
|
|
||
|
|
// MAIN //
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a boolean indicating if the runtime is Node.js.
|
||
|
|
*
|
||
|
|
* @returns {boolean} boolean indicating if runtime is Node.js
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* var bool = isNode();
|
||
|
|
* // returns <boolean>
|
||
|
|
*/
|
||
|
|
function isNode() {
|
||
|
|
return (
|
||
|
|
// Check for presence of `global` variable:
|
||
|
|
typeof global === 'object' &&
|
||
|
|
|
||
|
|
// Check that the `global` variable matches the determined global variable:
|
||
|
|
global === Global &&
|
||
|
|
|
||
|
|
// Check for a circular reference to the global variable:
|
||
|
|
Global === Global.global &&
|
||
|
|
|
||
|
|
// Check that the global variable has the expected internal class:
|
||
|
|
(
|
||
|
|
// Node < v7
|
||
|
|
nativeClass( Global ) === '[object global]' ||
|
||
|
|
|
||
|
|
// Node >= v7 (https://github.com/nodejs/node/issues/9274)
|
||
|
|
nativeClass( Global ) === '[object Object]'
|
||
|
|
) &&
|
||
|
|
|
||
|
|
// Check that the `global` variable is equal to the global scope:
|
||
|
|
globalScope === true &&
|
||
|
|
|
||
|
|
// Check for a `require` global variable:
|
||
|
|
typeof require === 'function' &&
|
||
|
|
|
||
|
|
// Check for a `process` global variable:
|
||
|
|
typeof proc === 'object' &&
|
||
|
|
|
||
|
|
// Check that the `process` global variable has the expected internal class:
|
||
|
|
(
|
||
|
|
// Node < v14.6.0
|
||
|
|
nativeClass( proc ) === '[object process]' ||
|
||
|
|
|
||
|
|
// Node >= v14.6.0
|
||
|
|
nativeClass( proc ) === '[object Object]'
|
||
|
|
) &&
|
||
|
|
|
||
|
|
// Check for a `versions` property:
|
||
|
|
isObject( proc.versions ) &&
|
||
|
|
|
||
|
|
// Check for a `node` property:
|
||
|
|
isString( proc.versions.node ) &&
|
||
|
|
|
||
|
|
(
|
||
|
|
// `process.release` was added in Node v3.0.0 via io.js:
|
||
|
|
typeof proc.release === 'undefined' ||
|
||
|
|
|
||
|
|
(
|
||
|
|
// Check for a `release` property:
|
||
|
|
isObject( proc.release ) &&
|
||
|
|
|
||
|
|
// Check for a `name` property:
|
||
|
|
isString( proc.release.name ) &&
|
||
|
|
|
||
|
|
// Check that the release name contains either `node` or `io.js` (in Node.js/io.js, the release name is read-only):
|
||
|
|
RE.test( proc.release.name )
|
||
|
|
)
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// EXPORTS //
|
||
|
|
|
||
|
|
module.exports = isNode;
|