80 lines
1.9 KiB
JavaScript
80 lines
1.9 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2019 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var proc = require( './process.js' );
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// VARIABLES //
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var NODE_VERSION = proc.versions.node;
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var TIMEOUT = 10; // ms
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// MAIN //
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/**
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* Sets the process exit code.
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*
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* @private
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* @param {Object} proc - process object
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* @param {NonNegativeInteger} code - exit code
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* @returns {void}
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*/
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function exitCode( proc, code ) {
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var v;
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// Handle old Node.js versions lacking `process.exitCode` support...
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v = NODE_VERSION.split( '.' );
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v[ 0 ] = parseInt( v[ 0 ], 10 );
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v[ 1 ] = parseInt( v[ 1 ], 10 );
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// Case: >0.x.x
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if ( v[ 0 ] > 0 ) {
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proc.exitCode = code;
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return;
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}
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// Case: >0.10.x
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if ( v[ 1 ] > 10 ) {
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proc.exitCode = code;
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return;
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}
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// Case: <= 0.10.x
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proc.exitCode = code; // NOTE: assigning this property should have no operational effect in older Node.js versions
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// No choice but to forcefully exit during a subsequent turn of the event loop (note: the timeout duration is arbitrary; the main idea is to hopefully allow the event loop queue to drain before exiting the process, including the flushing of stdio streams which can be non-blocking/asynchronous)...
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setTimeout( onTimeout, TIMEOUT );
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/**
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* Callback invoked during a subsequent turn of the event loop.
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*
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* @private
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*/
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function onTimeout() {
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proc.exit( code );
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}
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}
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// EXPORTS //
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module.exports = exitCode;
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