From 65d54577488abe021142ca9caf87e5290b7d609e Mon Sep 17 00:00:00 2001
From: Alexey Toptygin <alexey.toptygin@gmail.com>
Date: Thu, 5 May 2022 15:14:49 -0700
Subject: [PATCH] Add explicit type to lambda argument; this makes it typecheck
 with nightly hh_client. (#460)

---
 src/__Private/XHProf.hack | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/__Private/XHProf.hack b/src/__Private/XHProf.hack
index bcef9177f..efc3976ca 100644
--- a/src/__Private/XHProf.hack
+++ b/src/__Private/XHProf.hack
@@ -29,7 +29,10 @@ final abstract class XHProf {
   public static function disable(): dict<string, self::TResult> {
     invariant(self::$enabled === true, "Can't disable twice");
     self::$enabled = false;
-    $raw = Dict\map(\xhprof_disable(), $v ==> (int) $v['wt']);
+    $raw = Dict\map(
+      \xhprof_disable(),
+      (KeyedContainer<arraykey, mixed> $v) ==> (int) $v['wt'],
+    );
 
     $inclusive = dict[];
     $callers = dict[];