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Fix Expo Web crash by gracefully handling at-rules in CSSStyleSheet.insertRule

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Adrià Arrufat
2026-03-23 23:45:11 +09:00
parent ff209f5adf
commit ff0fbb6b41
1 changed files with 9 additions and 1 deletions
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10
src/browser/webapi/css/CSSStyleSheet.zig
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@@ -75,7 +75,15 @@ pub fn getOwnerRule(self: *const CSSStyleSheet) ?*CSSRule {
pub fn insertRule(self: *CSSStyleSheet, rule: []const u8, maybe_index: ?u32, page: *Page) !u32 {
const index = maybe_index orelse 0;
var it = Parser.parseStylesheet(rule);
const parsed_rule = it.next() orelse return error.SyntaxError;
const parsed_rule = it.next() orelse {
const trimmed = std.mem.trimLeft(u8, rule, &std.ascii.whitespace);
if (std.mem.startsWith(u8, trimmed, "@")) {
// At-rules (like @keyframes) are currently skipped by the parser.
// Returning the index simulates successful insertion without crashing.
return index;
}
return error.SyntaxError;
};
const style_rule = try CSSStyleRule.init(page);
try style_rule.setSelectorText(parsed_rule.selector, page);