From aebc8587f54291137ad0502cb97917ca737fbb69 Mon Sep 17 00:00:00 2001
From: afc163 <afc163@gmail.com>
Date: Mon, 4 May 2026 23:28:42 +0800
Subject: [PATCH] fix: resolve intermittent "Can't resolve 'tailwindcss'" on
 Windows (#11747)

Set globalThis.__tw_resolve in postcss.config.js to bypass
enhanced-resolve's CachedInputFileSystem, which caches stale
negative results on Windows (e.g. when Windows Defender scans
node_modules). Also fix @source path from "./src" to "."
since the directive is relative to the CSS file location.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 postcss.config.js | 32 ++++++++++++++++++++++++++++++++
 src/tailwind.css  |  2 +-
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/postcss.config.js b/postcss.config.js
index e5640725..2363ecf4 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -1,3 +1,35 @@
+const path = require('path');
+
+// Workaround for https://github.com/ant-design/ant-design-pro/issues/11747
+// On Windows, @tailwindcss/node uses enhanced-resolve with a 4-second
+// CachedInputFileSystem that can cache stale negative results (e.g. when
+// Windows Defender locks node_modules). This causes intermittent
+// "Can't resolve 'tailwindcss'" errors. Setting __tw_resolve bypasses
+// enhanced-resolve by using Node.js require.resolve, which is reliable.
+if (typeof globalThis.__tw_resolve !== 'function') {
+  globalThis.__tw_resolve = (specifier, fromDir) => {
+    if (specifier.startsWith('.') || specifier.startsWith('/')) return;
+    try {
+      const pkgJsonPath = require.resolve(specifier + '/package.json', {
+        paths: [fromDir],
+      });
+      const pkg = require(pkgJsonPath);
+      const pkgDir = path.dirname(pkgJsonPath);
+      if (pkg.exports?.['.']?.style) {
+        return path.join(pkgDir, pkg.exports['.'].style);
+      }
+      if (pkg.style) {
+        return path.join(pkgDir, pkg.style);
+      }
+      const indexPath = path.join(pkgDir, 'index.css');
+      try {
+        require('fs').accessSync(indexPath);
+        return indexPath;
+      } catch {}
+    } catch {}
+  };
+}
+
 module.exports = {
   plugins: {
     '@tailwindcss/postcss': {},
diff --git a/src/tailwind.css b/src/tailwind.css
index 79550f5d..a41506cf 100644
--- a/src/tailwind.css
+++ b/src/tailwind.css
@@ -1,3 +1,3 @@
 @import "tailwindcss";
 
-@source "./src";
+@source ".";