From 20af0c7f1b06a7e597e6b498dbc2b432a4a6d0de Mon Sep 17 00:00:00 2001
From: Alexander Akait <4567934+alexander-akait@users.noreply.github.com>
Date: Thu, 11 Nov 2021 22:18:00 +0300
Subject: [PATCH] fix: compatibility with Node.js 17

---
 .github/workflows/nodejs.yml |  2 +-
 src/index.js                 | 15 ++++++++++-----
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 74eb872..365c1f0 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -56,7 +56,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [12.x, 14.x, 16.x, 17.x]
         webpack-version: [latest]
 
     runs-on: ${{ matrix.os }}
diff --git a/src/index.js b/src/index.js
index 248477e..78e9aa9 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,5 +1,4 @@
 import path from "path";
-import crypto from "crypto";
 
 import { validate } from "schema-utils";
 import pLimit from "p-limit";
@@ -476,14 +475,20 @@ class CopyPlugin {
               const buffer = result.source.buffer();
 
               if (transform.cache) {
+                // TODO: remove in the next major release
+                const hasher =
+                  compiler.webpack &&
+                  compiler.webpack.util &&
+                  compiler.webpack.util.createHash
+                    ? compiler.webpack.util.createHash("xxhash64")
+                    : // eslint-disable-next-line global-require
+                      require("crypto").createHash("md4");
+
                 const defaultCacheKeys = {
                   version,
                   sourceFilename,
                   transform: transform.transformer,
-                  contentHash: crypto
-                    .createHash("md4")
-                    .update(buffer)
-                    .digest("hex"),
+                  contentHash: hasher.update(buffer).digest("hex"),
                   index,
                 };
                 const cacheKeys = `transform|${serialize(