From b1e2c8fd5cb5dfa46bc440a12eafaf56cd844b1c Mon Sep 17 00:00:00 2001
From: Philipp Tanlak <philipp.tanlak@gmail.com>
Date: Mon, 24 Nov 2025 20:54:57 +0100
Subject: Docs

---
 .../tailwindcss/src/lib/findAtConfigPath.js        | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 node_modules/tailwindcss/src/lib/findAtConfigPath.js

(limited to 'node_modules/tailwindcss/src/lib/findAtConfigPath.js')

diff --git a/node_modules/tailwindcss/src/lib/findAtConfigPath.js b/node_modules/tailwindcss/src/lib/findAtConfigPath.js
new file mode 100644
index 0000000..ac0adab
--- /dev/null
+++ b/node_modules/tailwindcss/src/lib/findAtConfigPath.js
@@ -0,0 +1,48 @@
+import fs from 'fs'
+import path from 'path'
+
+/**
+ * Find the @config at-rule in the given CSS AST and return the relative path to the config file
+ *
+ * @param {import('postcss').Root} root
+ * @param {import('postcss').Result} result
+ */
+export function findAtConfigPath(root, result) {
+  let configPath = null
+  let relativeTo = null
+
+  root.walkAtRules('config', (rule) => {
+    relativeTo = rule.source?.input.file ?? result.opts.from ?? null
+
+    if (relativeTo === null) {
+      throw rule.error(
+        'The `@config` directive cannot be used without setting `from` in your PostCSS config.'
+      )
+    }
+
+    if (configPath) {
+      throw rule.error('Only one `@config` directive is allowed per file.')
+    }
+
+    let matches = rule.params.match(/(['"])(.*?)\1/)
+    if (!matches) {
+      throw rule.error('A path is required when using the `@config` directive.')
+    }
+
+    let inputPath = matches[2]
+    if (path.isAbsolute(inputPath)) {
+      throw rule.error('The `@config` directive cannot be used with an absolute path.')
+    }
+
+    configPath = path.resolve(path.dirname(relativeTo), inputPath)
+    if (!fs.existsSync(configPath)) {
+      throw rule.error(
+        `The config file at "${inputPath}" does not exist. Make sure the path is correct and the file exists.`
+      )
+    }
+
+    rule.remove()
+  })
+
+  return configPath ? configPath : null
+}
-- 
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