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fix: for-in/for-of 头名仅 var 提升入入口初始化名单，排除 let/const

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彭俊皓
2026-08-16 13:32:25 +08:00
parent 9002a1aa77
commit ce0f865004
1 changed files with 10 additions and 4 deletions
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crates/oxide_emit/src/closure.rs
+10 -4
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@@ -101,14 +101,20 @@ impl Emitter {
self.collect_var_names_stmt(std::slice::from_ref(&f.body), out);
}
Statement::ForInStatement(fi) => {
if let oxide_parser::ForStatementLeft::VariableDeclaration(_) = &fi.left {
self.collect_for_left_decl_names(&fi.left, out);
if let oxide_parser::ForStatementLeft::VariableDeclaration(vd) = &fi.left {
// 仅 var 头名提升到函数作用域，let/const 头名是迭代级绑定。
if matches!(vd.kind, VariableDeclarationKind::Var) {
self.collect_for_left_decl_names(&fi.left, out);
}
}
self.collect_var_names_stmt(std::slice::from_ref(&fi.body), out);
}
Statement::ForOfStatement(fo) => {
if let oxide_parser::ForStatementLeft::VariableDeclaration(_) = &fo.left {
self.collect_for_left_decl_names(&fo.left, out);
if let oxide_parser::ForStatementLeft::VariableDeclaration(vd) = &fo.left {
// 仅 var 头名提升到函数作用域，let/const 头名是迭代级绑定。
if matches!(vd.kind, VariableDeclarationKind::Var) {
self.collect_for_left_decl_names(&fo.left, out);
}
}
self.collect_var_names_stmt(std::slice::from_ref(&fo.body), out);
}