Intlayer

import * as os from 'node:os'; import { run } from './bin'; type ProcessList = [number, number][]; // [PPID, PID][] type ProcessListCallback = (err: Error | null, list?: ProcessList) => void; /** * Gets the list of all the pids of the system through the ps command. * @param callback Callback function with error and process list. */ export const ps = (callback: ProcessListCallback): void => { const args = ['-A', '-o', 'ppid,pid']; run('ps', args, (err, stdout, code) => { if (err) { callback(err); return; } if (code !== 0) { callback(new Error(`pidtree ps command exited with code ${code}`)); return; } // Example of stdout // // PPID PID // 1 430 // 430 432 // 1 727 // 1 7166 if (!stdout) { callback(new Error('No stdout received from ps command')); return; } try { const lines = stdout.split(os.EOL); const list: ProcessList = []; for (let i = 1; i < lines.length; i++) { const trimmed = lines[i].trim(); if (!trimmed) continue; const parts = trimmed.split(/\s+/); const ppid = parseInt(parts[0], 10); // PPID const pid = parseInt(parts[1], 10); // PID if (!Number.isNaN(ppid) && !Number.isNaN(pid)) { list.push([ppid, pid]); } } callback(null, list); } catch (error) { callback(error instanceof Error ? error : new Error(String(error))); } }); };