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/lib/syntax/node/Atrule.js             | 100 +++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 vanilla/node_modules/css-tree/lib/syntax/node/Atrule.js

(limited to 'vanilla/node_modules/css-tree/lib/syntax/node/Atrule.js')

diff --git a/vanilla/node_modules/css-tree/lib/syntax/node/Atrule.js b/vanilla/node_modules/css-tree/lib/syntax/node/Atrule.js
new file mode 100644
index 0000000..99d1284
--- /dev/null
+++ b/vanilla/node_modules/css-tree/lib/syntax/node/Atrule.js
@@ -0,0 +1,100 @@
+import {
+    AtKeyword,
+    Semicolon,
+    LeftCurlyBracket,
+    RightCurlyBracket
+} from '../../tokenizer/index.js';
+
+function consumeRaw() {
+    return this.Raw(this.consumeUntilLeftCurlyBracketOrSemicolon, true);
+}
+
+function isDeclarationBlockAtrule() {
+    for (let offset = 1, type; type = this.lookupType(offset); offset++) {
+        if (type === RightCurlyBracket) {
+            return true;
+        }
+
+        if (type === LeftCurlyBracket ||
+            type === AtKeyword) {
+            return false;
+        }
+    }
+
+    return false;
+}
+
+
+export const name = 'Atrule';
+export const walkContext = 'atrule';
+export const structure = {
+    name: String,
+    prelude: ['AtrulePrelude', 'Raw', null],
+    block: ['Block', null]
+};
+
+export function parse(isDeclaration = false) {
+    const start = this.tokenStart;
+    let name;
+    let nameLowerCase;
+    let prelude = null;
+    let block = null;
+
+    this.eat(AtKeyword);
+
+    name = this.substrToCursor(start + 1);
+    nameLowerCase = name.toLowerCase();
+    this.skipSC();
+
+    // parse prelude
+    if (this.eof === false &&
+        this.tokenType !== LeftCurlyBracket &&
+        this.tokenType !== Semicolon) {
+        if (this.parseAtrulePrelude) {
+            prelude = this.parseWithFallback(this.AtrulePrelude.bind(this, name, isDeclaration), consumeRaw);
+        } else {
+            prelude = consumeRaw.call(this, this.tokenIndex);
+        }
+
+        this.skipSC();
+    }
+
+    switch (this.tokenType) {
+        case Semicolon:
+            this.next();
+            break;
+
+        case LeftCurlyBracket:
+            if (hasOwnProperty.call(this.atrule, nameLowerCase) &&
+                typeof this.atrule[nameLowerCase].block === 'function') {
+                block = this.atrule[nameLowerCase].block.call(this, isDeclaration);
+            } else {
+                // TODO: should consume block content as Raw?
+                block = this.Block(isDeclarationBlockAtrule.call(this));
+            }
+
+            break;
+    }
+
+    return {
+        type: 'Atrule',
+        loc: this.getLocation(start, this.tokenStart),
+        name,
+        prelude,
+        block
+    };
+}
+
+export function generate(node) {
+    this.token(AtKeyword, '@' + node.name);
+
+    if (node.prelude !== null) {
+        this.node(node.prelude);
+    }
+
+    if (node.block) {
+        this.node(node.block);
+    } else {
+        this.token(Semicolon, ';');
+    }
+}
-- 
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