86 lines
2.0 KiB
JavaScript
86 lines
2.0 KiB
JavaScript
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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var chalk = require('chalk');
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var execSync = require('child_process').execSync;
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var execFileSync = require('child_process').execFileSync;
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var path = require('path');
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var execOptions = {
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encoding: 'utf8',
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stdio: [
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'pipe', // stdin (default)
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'pipe', // stdout (default)
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'ignore', //stderr
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],
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};
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function isProcessAReactApp(processCommand) {
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return /^node .*react-scripts\/scripts\/start\.js\s?$/.test(processCommand);
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}
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function getProcessIdOnPort(port) {
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return execFileSync('lsof', ['-i:' + port, '-P', '-t', '-sTCP:LISTEN'], execOptions)
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.split('\n')[0]
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.trim();
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}
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function getPackageNameInDirectory(directory) {
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var packagePath = path.join(directory.trim(), 'package.json');
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try {
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return require(packagePath).name;
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} catch (e) {
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return null;
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}
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}
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function getProcessCommand(processId, processDirectory) {
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var command = execSync(
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'ps -o command -p ' + processId + ' | sed -n 2p',
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execOptions
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);
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command = command.replace(/\n$/, '');
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if (isProcessAReactApp(command)) {
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const packageName = getPackageNameInDirectory(processDirectory);
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return packageName ? packageName : command;
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} else {
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return command;
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}
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}
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function getDirectoryOfProcessById(processId) {
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return execSync(
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'lsof -p ' +
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processId +
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' | awk \'$4=="cwd" {for (i=9; i<=NF; i++) printf "%s ", $i}\'',
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execOptions
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).trim();
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}
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function getProcessForPort(port) {
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try {
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var processId = getProcessIdOnPort(port);
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var directory = getDirectoryOfProcessById(processId);
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var command = getProcessCommand(processId, directory);
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return (
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chalk.cyan(command) +
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chalk.grey(' (pid ' + processId + ')\n') +
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chalk.blue(' in ') +
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chalk.cyan(directory)
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);
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} catch (e) {
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return null;
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}
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}
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module.exports = getProcessForPort;
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