fix(minifier): do not fold !!void b (#8533)

Author: Boshen

crates/oxc_ecmascript/src/constant_evaluation/mod.rs

@@ -384,9 +384,10 @@ pub trait ConstantEvaluation<'a> {
             }
             UnaryOperator::Void => (expr.argument.is_literal() || !expr.may_have_side_effects())
                 .then_some(ConstantValue::Undefined),
-            UnaryOperator::LogicalNot => {
-                self.get_boolean_value(&expr.argument).map(|b| !b).map(ConstantValue::Boolean)
-            }
+            UnaryOperator::LogicalNot => self
+                .get_side_free_boolean_value(&expr.argument)
+                .map(|b| !b)
+                .map(ConstantValue::Boolean),
             UnaryOperator::UnaryPlus => {
                 self.eval_to_number(&expr.argument).map(ConstantValue::Number)
             }

crates/oxc_minifier/src/ast_passes/peephole_fold_constants.rs

@@ -1113,6 +1113,7 @@ mod test {
         test("a=!10", "a=false");
         test("a=!false", "a=true");
         test_same("a=!foo()");
+        test_same("a = !!void b");
 
         test("a=-0", "a=-0");
         test("a=-(0)", "a=-0");

tasks/minsize/minsize.snap

@@ -21,7 +21,7 @@ Original   | minified   | minified   | gzip       | gzip       | Fixture
 
 3.20 MB    | 1.01 MB    | 1.01 MB    | 332.02 kB  | 331.56 kB  | echarts.js
 
-6.69 MB    | 2.32 MB    | 2.31 MB    | 492.64 kB  | 488.28 kB  | antd.js   
+6.69 MB    | 2.32 MB    | 2.31 MB    | 492.65 kB  | 488.28 kB  | antd.js   
 
 10.95 MB   | 3.49 MB    | 3.49 MB    | 907.34 kB  | 915.50 kB  | typescript.js