gistfile.patch

diff --git a/lib/npm.js b/lib/npm.js
index 79d276722..7fb234cc9 100644
--- a/lib/npm.js
+++ b/lib/npm.js
@@ -3,6 +3,30 @@
 // we define and instantiate the singleton ahead of loading any modules
 // required for its methods.
 
+/* istanbul ignore next */ {
+  const timers = {}
+  process.on('time', name => {
+    if (timers[name]) {
+      throw new Error('conflicting timer! ' + name)
+    }
+    timers[name] = process.hrtime()
+  })
+  process.on('timeEnd', name => {
+    if (!timers[name]) {
+      throw new Error('timer not started! ' + name)
+    }
+    delete timers[name]
+  })
+  process.on('exit', () => {
+    for (const name of Object.keys(timers)) {
+      if (name !== 'npm') {
+        console.error('Dangling timer: ', name)
+        process.exitCode = 1
+      }
+    }
+  })
+}
+
 // these are all dependencies used in the ctor
 const EventEmitter = require('events')
 const { resolve, dirname } = require('path')
@@ -108,6 +132,7 @@ const npm = module.exports = new class extends EventEmitter {
     if (this.config.get('usage')) {
       console.log(impl.usage)
       cb()
+      process.emit('timeEnd', `command:${cmd}`)
     } else {
       impl(args, er => {
         process.emit('timeEnd', `command:${cmd}`)