From b39ea88e04671181b2a1090cd93e92f4b9bcf7e8 Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Wed, 19 May 2021 11:12:13 +0200
Subject: [PATCH] restore webpack defaults for managed/immutablePaths

---
 packages/next/build/webpack-config.ts | 41 +++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/packages/next/build/webpack-config.ts b/packages/next/build/webpack-config.ts
index 5a3a59975e6e3..478e32adba22b 100644
--- a/packages/next/build/webpack-config.ts
+++ b/packages/next/build/webpack-config.ts
@@ -1247,6 +1247,47 @@ export default async function getBaseWebpackConfig(
     // webpack 5 no longer polyfills Node.js modules:
     if (webpackConfig.node) delete webpackConfig.node.setImmediate
 
+    // Due to bundling of webpack the default values can't be correctly detected
+    // This restores the webpack defaults
+    // @ts-ignore webpack 5
+    webpackConfig.snapshot = {}
+    if (process.versions.pnp === '3') {
+      const match = /^(.+?)[\\/]cache[\\/]jest-worker-npm-[^\\/]+\.zip[\\/]node_modules[\\/]/.exec(
+        require.resolve('jest-worker')
+      )
+      if (match) {
+        // @ts-ignore webpack 5
+        webpackConfig.snapshot.managedPaths = [
+          path.resolve(match[1], 'unplugged'),
+        ]
+      }
+    } else {
+      const match = /^(.+?[\\/]node_modules)[\\/]/.exec(
+        require.resolve('jest-worker')
+      )
+      if (match) {
+        // @ts-ignore webpack 5
+        webpackConfig.snapshot.managedPaths = [match[1]]
+      }
+    }
+    if (process.versions.pnp === '1') {
+      const match = /^(.+?[\\/]v4)[\\/]npm-jest-worker-[^\\/]+-[\da-f]{40}[\\/]node_modules[\\/]/.exec(
+        require.resolve('jest-worker')
+      )
+      if (match) {
+        // @ts-ignore webpack 5
+        webpackConfig.snapshot.immutablePaths = [match[1]]
+      }
+    } else if (process.versions.pnp === '3') {
+      const match = /^(.+?)[\\/]jest-worker-npm-[^\\/]+\.zip[\\/]node_modules[\\/]/.exec(
+        require.resolve('jest-worker')
+      )
+      if (match) {
+        // @ts-ignore webpack 5
+        webpackConfig.snapshot.immutablePaths = [match[1]]
+      }
+    }
+
     if (dev) {
       if (!webpackConfig.optimization) {
         webpackConfig.optimization = {}