From f446929923d6cfa471721404d9d7f806449d5fe6 Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Tue, 3 Dec 2019 23:02:49 -0500
Subject: util: add internal sleep() function

PR-URL: https://github.com/nodejs/node/pull/30787
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
---
 lib/internal/util.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'lib/internal/util.js')

diff --git a/lib/internal/util.js b/lib/internal/util.js
index 1ff25dbc7d..0a31973918 100644
--- a/lib/internal/util.js
+++ b/lib/internal/util.js
@@ -26,7 +26,8 @@ const {
   getHiddenValue,
   setHiddenValue,
   arrow_message_private_symbol: kArrowMessagePrivateSymbolIndex,
-  decorated_private_symbol: kDecoratedPrivateSymbolIndex
+  decorated_private_symbol: kDecoratedPrivateSymbolIndex,
+  sleep: _sleep
 } = internalBinding('util');
 const { isNativeError } = internalBinding('types');
 
@@ -385,6 +386,17 @@ function once(callback) {
   };
 }
 
+let validateUint32;
+
+function sleep(msec) {
+  // Lazy-load to avoid a circular dependency.
+  if (validateUint32 === undefined)
+    ({ validateUint32 } = require('internal/validators'));
+
+  validateUint32(msec, 'msec');
+  _sleep(msec);
+}
+
 module.exports = {
   assertCrypto,
   cachedResult,
@@ -402,6 +414,7 @@ module.exports = {
   normalizeEncoding,
   once,
   promisify,
+  sleep,
   spliceOne,
   removeColors,
 
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