Skip to content

fix(minifier): +0n produces TypeError #8410

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
graphite-app merged 1 commit into from
Jan 10, 2025
Merged

fix(minifier): +0n produces TypeError #8410

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 2 additions & 1 deletion crates/oxc_ecmascript/src/constant_evaluation/is_literal_value.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -21,13 +21,14 @@ pub fn is_immutable_value(expr: &Expression<'_>) -> bool {
Expression::BooleanLiteral(_)
| Expression::NullLiteral(_)
| Expression::NumericLiteral(_)
| Expression::BigIntLiteral(_)
| Expression::RegExpLiteral(_)
| Expression::StringLiteral(_) => true,
Expression::TemplateLiteral(lit) if lit.is_no_substitution_template() => true,
Expression::Identifier(ident) => {
matches!(ident.name.as_str(), "undefined" | "Infinity" | "NaN")
}
// Operations on bigint can result type error.
// Expression::BigIntLiteral(_) => false,
_ => false,
}
}
Expand Down
12 changes: 8 additions & 4 deletions crates/oxc_minifier/src/ast_passes/peephole_remove_dead_code.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -314,9 +314,7 @@ impl<'a, 'b> PeepholeRemoveDeadCode {
if !template_lit.expressions.is_empty() {
return None;
}

let mut expressions = ctx.ast.move_vec(&mut template_lit.expressions);

if expressions.len() == 0 {
return Some(ctx.ast.statement_empty(SPAN));
} else if expressions.len() == 1 {
Expand All @@ -327,7 +325,6 @@ impl<'a, 'b> PeepholeRemoveDeadCode {
),
);
}

Some(ctx.ast.statement_expression(
template_lit.span,
ctx.ast.expression_sequence(template_lit.span, expressions),
Expand All @@ -345,7 +342,13 @@ impl<'a, 'b> PeepholeRemoveDeadCode {
Some(ctx.ast.statement_empty(SPAN))
}
// `typeof x.y` -> `x`, `!x` -> `x`, `void x` -> `x`...
Expression::UnaryExpression(unary_expr) if !unary_expr.operator.is_delete() => {
// `+0n` -> `Uncaught TypeError: Cannot convert a BigInt value to a number`
Expression::UnaryExpression(unary_expr)
if !matches!(
unary_expr.operator,
UnaryOperator::Delete | UnaryOperator::UnaryPlus
) =>
{
Some(ctx.ast.statement_expression(
unary_expr.span,
ctx.ast.move_expression(&mut unary_expr.argument),
Expand Down Expand Up @@ -706,6 +709,7 @@ mod test {
fold_same("delete x");
fold_same("delete x.y");
fold_same("delete x.y.z()");
fold_same("+0n"); // Uncaught TypeError: Cannot convert a BigInt value to a number
}

#[test]
Expand Down
Loading