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node_modules/pidtree/lib/get.js

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+import os from 'node:os';
+import {ps} from './ps.js';
+import {wmic} from './wmic.js';
+import {powershell} from './powershell.js';
+
+const platformToMethod = {
+  darwin: 'ps',
+  sunos: 'ps',
+  freebsd: 'ps',
+  netbsd: 'ps',
+  win: 'win',
+  linux: 'ps',
+  aix: 'ps',
+};
+
+let platform = os.platform();
+if (platform.startsWith('win')) {
+  platform = 'win';
+}
+
+const method = platformToMethod[platform];
+
+/**
+ * Lists the system pids on Windows. wmic has been removed from recent versions
+ * (Windows 11 24H2, Windows Server 2025), so it is tried first (it is faster
+ * when present) and PowerShell is used as a fallback when it is missing.
+ * Exported for testing.
+ * @param {Function} callback callback(err, list)
+ * @param {Function} [wmicFn] Injectable wmic backend, used for testing.
+ * @param {Function} [powershellFn] Injectable PowerShell backend, for testing.
+ */
+export function getWindows(callback, wmicFn = wmic, powershellFn = powershell) {
+  wmicFn((error, list) => {
+    if (error && error.code === 'ENOENT') {
+      powershellFn(callback);
+      return;
+    }
+
+    callback(error, list);
+  });
+}
+
+/**
+ * Gets the list of all the pids of the system.
+ * @param {Function} callback Called when the list is ready.
+ */
+export function get(callback) {
+  if (method === undefined) {
+    callback(
+      new Error(
+        os.platform() +
+          ' is not supported yet, please open an issue (https://github.com/simonepri/pidtree)',
+      ),
+    );
+    return;
+  }
+
+  if (method === 'win') {
+    getWindows(callback);
+    return;
+  }
+
+  ps(callback);
+}