From 76cb9c2a39d477a64824a985ade40507e3bbade1 Mon Sep 17 00:00:00 2001
From: Adam Mathes <adam@adammathes.com>
Date: Fri, 13 Feb 2026 21:34:48 -0800
Subject: feat(vanilla): add testing infrastructure and tests (NK-wjnczv)

---
 .../css-tree/cjs/syntax/atrule/import.cjs          | 101 +++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 vanilla/node_modules/css-tree/cjs/syntax/atrule/import.cjs

(limited to 'vanilla/node_modules/css-tree/cjs/syntax/atrule/import.cjs')

diff --git a/vanilla/node_modules/css-tree/cjs/syntax/atrule/import.cjs b/vanilla/node_modules/css-tree/cjs/syntax/atrule/import.cjs
new file mode 100644
index 0000000..09fc11c
--- /dev/null
+++ b/vanilla/node_modules/css-tree/cjs/syntax/atrule/import.cjs
@@ -0,0 +1,101 @@
+'use strict';
+
+const types = require('../../tokenizer/types.cjs');
+
+function parseWithFallback(parse, fallback) {
+    return this.parseWithFallback(
+        () => {
+            try {
+                return parse.call(this);
+            } finally {
+                this.skipSC();
+                if (this.lookupNonWSType(0) !== types.RightParenthesis) {
+                    this.error();
+                }
+            }
+        },
+        fallback || (() => this.Raw(null, true))
+    );
+}
+
+const parseFunctions = {
+    layer() {
+        this.skipSC();
+
+        const children = this.createList();
+        const node = parseWithFallback.call(this, this.Layer);
+
+        if (node.type !== 'Raw' || node.value !== '') {
+            children.push(node);
+        }
+
+        return children;
+    },
+    supports() {
+        this.skipSC();
+
+        const children = this.createList();
+        const node = parseWithFallback.call(
+            this,
+            this.Declaration,
+            () => parseWithFallback.call(this, () => this.Condition('supports'))
+        );
+
+        if (node.type !== 'Raw' || node.value !== '') {
+            children.push(node);
+        }
+
+        return children;
+    }
+};
+
+const importAtrule = {
+    parse: {
+        prelude() {
+            const children = this.createList();
+
+            switch (this.tokenType) {
+                case types.String:
+                    children.push(this.String());
+                    break;
+
+                case types.Url:
+                case types.Function:
+                    children.push(this.Url());
+                    break;
+
+                default:
+                    this.error('String or url() is expected');
+            }
+
+            this.skipSC();
+
+            if (this.tokenType === types.Ident &&
+                this.cmpStr(this.tokenStart, this.tokenEnd, 'layer')) {
+                children.push(this.Identifier());
+            } else if (
+                this.tokenType === types.Function &&
+                this.cmpStr(this.tokenStart, this.tokenEnd, 'layer(')
+            ) {
+                children.push(this.Function(null, parseFunctions));
+            }
+
+            this.skipSC();
+
+            if (this.tokenType === types.Function &&
+                this.cmpStr(this.tokenStart, this.tokenEnd, 'supports(')) {
+                children.push(this.Function(null, parseFunctions));
+            }
+
+            if (this.lookupNonWSType(0) === types.Ident ||
+                this.lookupNonWSType(0) === types.LeftParenthesis) {
+                children.push(this.MediaQueryList());
+            }
+
+            return children;
+        },
+        block: null
+    }
+};
+
+module.exports = importAtrule;
-- 
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