From 00935251386e97741145598c7287c7ed1f7b559f Mon Sep 17 00:00:00 2001
From: Justin Robb <reptarsrage@gmail.com>
Date: Wed, 20 Oct 2021 15:31:23 -0700
Subject: [PATCH] Use `md5` has for caching on node v17 (#918)

---
 src/cache.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/cache.js b/src/cache.js
index 7f7721ff..35e78819 100644
--- a/src/cache.js
+++ b/src/cache.js
@@ -63,7 +63,14 @@ const write = async function (filename, compress, result) {
  * @return {String}
  */
 const filename = function (source, identifier, options) {
-  const hash = crypto.createHash("md4");
+  // md4 hashing is not supported starting with node v17.0.0
+  const majorNodeVersion = parseInt(process.versions.node.split(".")[0], 10);
+  let hashType = "md4";
+  if (majorNodeVersion >= 17) {
+    hashType = "md5";
+  }
+
+  const hash = crypto.createHash(hashType);
 
   const contents = JSON.stringify({ source, options, identifier });