diff --git a/crates/oxide_emit/src/closure.rs b/crates/oxide_emit/src/closure.rs
index e3e99afd..601f3089 100644
--- a/crates/oxide_emit/src/closure.rs
+++ b/crates/oxide_emit/src/closure.rs
@@ -426,10 +426,8 @@ impl Emitter {
                 catch_shadow.insert(bi.name.as_str().to_string());
             }
             oxide_parser::BindingPattern::ArrayPattern(ap) => {
-                for elem in &ap.elements {
-                    if let Some(p) = elem {
-                        self.collect_capture_names_binding_pattern(p, ref_set, shadow, out, catch_shadow);
-                    }
+                for p in ap.elements.iter().flatten() {
+                    self.collect_capture_names_binding_pattern(p, ref_set, shadow, out, catch_shadow);
                 }
                 if let Some(rest) = &ap.rest {
                     self.collect_capture_names_binding_pattern(&rest.argument, ref_set, shadow, out, catch_shadow);
@@ -470,10 +468,8 @@ impl Emitter {
                 self.collect_capture_names_expr(&m.expression, ref_set, shadow, out);
             }
             oxide_parser::AssignmentTarget::ArrayAssignmentTarget(a) => {
-                for elem in &a.elements {
-                    if let Some(e) = elem {
-                        self.collect_capture_names_maybe_default_target(e, ref_set, shadow, out);
-                    }
+                for e in a.elements.iter().flatten() {
+                    self.collect_capture_names_maybe_default_target(e, ref_set, shadow, out);
                 }
                 if let Some(rest) = &a.rest {
                     self.collect_capture_names_assign_target(&rest.target, ref_set, shadow, out);
@@ -528,10 +524,8 @@ impl Emitter {
                 self.collect_capture_names_expr(&m.expression, ref_set, shadow, out);
             }
             MaybeDefault::ArrayAssignmentTarget(a) => {
-                for elem in &a.elements {
-                    if let Some(e) = elem {
-                        self.collect_capture_names_maybe_default_target(e, ref_set, shadow, out);
-                    }
+                for e in a.elements.iter().flatten() {
+                    self.collect_capture_names_maybe_default_target(e, ref_set, shadow, out);
                 }
             }
             MaybeDefault::ObjectAssignmentTarget(o) => {
@@ -909,10 +903,8 @@ impl Emitter {
         match pattern {
             oxide_parser::BindingPattern::BindingIdentifier(_) => {}
             oxide_parser::BindingPattern::ArrayPattern(ap) => {
-                for elem in &ap.elements {
-                    if let Some(p) = elem {
-                        self.collect_captured_binding_pattern(p, own, out);
-                    }
+                for p in ap.elements.iter().flatten() {
+                    self.collect_captured_binding_pattern(p, own, out);
                 }
                 if let Some(rest) = &ap.rest {
                     self.collect_captured_binding_pattern(&rest.argument, own, out);
diff --git a/crates/oxide_emit/src/emit.rs b/crates/oxide_emit/src/emit.rs
index 2b023cac..eebe4701 100644
--- a/crates/oxide_emit/src/emit.rs
+++ b/crates/oxide_emit/src/emit.rs
@@ -704,10 +704,8 @@ impl Emitter {
                 self.collect_pattern_default_exprs(&ap.left, out);
             }
             BindingPattern::ArrayPattern(ap) => {
-                for elem in &ap.elements {
-                    if let Some(p) = elem {
-                        self.collect_pattern_default_exprs(p, out);
-                    }
+                for p in ap.elements.iter().flatten() {
+                    self.collect_pattern_default_exprs(p, out);
                 }
                 if let Some(rest) = &ap.rest {
                     self.collect_pattern_default_exprs(&rest.argument, out);
@@ -822,6 +820,7 @@ impl Emitter {
         )
     }
 
+    #[allow(clippy::too_many_arguments)]
     fn compile_function_body_with_flags<'a>(
         &self, param_specs: &[ParamSpec<'a>], body_stmts: &[Statement<'a>], parent_ctx: &CompileCtx,
         is_expression_body: bool, is_arrow: bool, is_generator: bool, is_async: bool,
@@ -1069,6 +1068,7 @@ impl Emitter {
     }
 
     /// 参数 prologue：函数作用域 + 参数声明/解构 + 闭包捕获与 upvalue 分析。返回 param_base。
+    #[allow(clippy::too_many_arguments)]
     fn emit_params_prologue<'a>(
         &self, param_specs: &[ParamSpec<'a>], body_stmts: &[Statement<'a>], parent_ctx: &CompileCtx,
         ctx: &mut CompileCtx, body_context: FunctionBodyContext, extra_capture_exprs: &[&'a Expression<'a>],
diff --git a/crates/oxide_emit/src/module.rs b/crates/oxide_emit/src/module.rs
index efd9c994..bceb38e3 100644
--- a/crates/oxide_emit/src/module.rs
+++ b/crates/oxide_emit/src/module.rs
@@ -200,7 +200,7 @@ impl Emitter {
                 // 自导入：读自身命名空间（依赖即本模块，勿递归）。
                 ns_reg
             } else {
-                if path_stack.iter().any(|p| *p == resolved.path) {
+                if path_stack.contains(&resolved.path) {
                     return Err(format!("circular module import not supported: {}", resolved.path));
                 }
                 path_stack.push(resolved.path.clone());
diff --git a/crates/oxide_emit/src/prepass.rs b/crates/oxide_emit/src/prepass.rs
index 2b11e8c9..88d4bec9 100644
--- a/crates/oxide_emit/src/prepass.rs
+++ b/crates/oxide_emit/src/prepass.rs
@@ -537,10 +537,8 @@ impl Emitter {
                 );
             }
             BindingPattern::ArrayPattern(ap) => {
-                for elem in &ap.elements {
-                    if let Some(e) = elem {
-                        self.predeclare_lexical_pattern(e, is_const, ctx);
-                    }
+                for e in ap.elements.iter().flatten() {
+                    self.predeclare_lexical_pattern(e, is_const, ctx);
                 }
                 if let Some(rest) = &ap.rest {
                     self.predeclare_lexical_pattern(&rest.argument, is_const, ctx);