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LibJS: Keep new call-paren optional chaining valid

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RubenKelevra 2026-03-17 13:57:24 +01:00 committed by Andreas Kling
parent ea8fa63e79
commit 3cb636ca38
1 changed files with 7 additions and 3 deletions
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10
Libraries/LibJS/Rust/src/parser/expressions.rs
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@ -982,9 +982,13 @@ impl Parser<'_> {
// https://tc39.es/ecma262/#prod-OptionalExpression
// Optional chaining directly on an unparenthesized `new` expression is invalid:
// `new Foo?.bar` // SyntaxError
// while parenthesized forms remain valid:
// while parenthesized/new-call forms remain valid:
// `(new Foo)?.bar`
if matches!(lhs.inner, ExpressionKind::New(_)) && !lhs_is_parenthesized {
// `new Foo()?.bar`
if let ExpressionKind::New(ref new_expression) = lhs.inner
&& !lhs_is_parenthesized
&& !new_expression.is_inside_parens
{
self.syntax_error("'new' cannot be used with optional chaining");
self.consume();
return (lhs, ForbiddenTokens::none());
@ -1221,7 +1225,7 @@ impl Parser<'_> {
callee: Box::new(callee),
arguments,
is_parenthesized: false,
is_inside_parens: false,
is_inside_parens: true,
}),
)
} else {