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express-server/node_modules/pstree.remy/lib/index.js

@@ -0,0 +1,32 @@
+const exec = require('child_process').exec;
+const tree = require('./tree');
+const utils = require('./utils');
+var hasPS = true;
+
+// discover if the OS has `ps`, and therefore can use psTree
+exec('ps', error => {
+  module.exports.hasPS = hasPS = !error;
+});
+
+module.exports = function main(pid, callback) {
+  if (typeof pid === 'number') {
+    pid = pid.toString();
+  }
+
+  if (hasPS && !process.env.NO_PS) {
+    return tree(pid, callback);
+  }
+
+  utils
+    .getStat()
+    .then(utils.tree)
+    .then(tree => utils.pidsForTree(tree, pid))
+    .then(res => callback(null, res.map(p => p.PID)))
+    .catch(error => callback(error));
+};
+
+if (!module.parent) {
+  module.exports(process.argv[2], (e, pids) => console.log(pids));
+}
+
+module.exports.hasPS = hasPS;