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feat(minifier): minimize double negated binary expressions (#8304)

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camc314 2025-01-06 23:26:20 +00:00
parent 76c778b03f
commit af65c3670f
1 changed files with 19 additions and 1 deletions
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20
crates/oxc_minifier/src/ast_passes/peephole_minimize_conditions.rs
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@ -100,6 +100,23 @@ impl<'a> PeepholeMinimizeConditions {
if Self::is_in_boolean_context(ctx) {
return Some(ctx.ast.move_expression(&mut e1.argument));
}
if let Expression::BinaryExpression(bin_expr) = &e1.argument {
if matches!(
bin_expr.operator,
BinaryOperator::Equality
| BinaryOperator::Inequality
| BinaryOperator::StrictEquality
| BinaryOperator::StrictInequality
| BinaryOperator::LessThan
| BinaryOperator::LessEqualThan
| BinaryOperator::GreaterThan
| BinaryOperator::GreaterEqualThan
| BinaryOperator::In
| BinaryOperator::Instanceof
) {
return Some(ctx.ast.move_expression(&mut e1.argument));
}
}
}
}
@ -1733,9 +1750,10 @@ mod test {
}
#[test]
fn minimize_nots_with_deletes() {
fn minimize_nots_with_binary_expressions() {
test("!!delete x.y", "delete x.y");
test("!!!delete x.y", "!delete x.y");
test("!!!!delete x.y", "delete x.y");
test("var k = !!(foo instanceof bar)", "var k = foo instanceof bar");
}
}