perf: ast scanner is_top_level (#2803)

IWANABETHATGUY · web-flow · commit 2be7882ce850 · 2024-11-20T16:26:50.000+08:00
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### Description

&lt;!-- Please insert your description here and provide especially info
about the "what" this PR is solving --&gt;
diff --git a/crates/rolldown/src/ast_scanner/mod.rs b/crates/rolldown/src/ast_scanner/mod.rs
@@ -174,6 +174,7 @@ impl<'me, 'ast: 'me> AstScanner<'me, 'ast> {
       .scope_stack
       .iter()
       .filter_map(|item| *item)
+      .rev()
       .all(|scope| self.scopes.get_flags(scope).is_top())
   }
 

Original file line number	Diff line number	Diff line change
`@@ -174,6 +174,7 @@ impl<'me, 'ast: 'me> AstScanner<'me, 'ast> {`
`174`	`174`	`.scope_stack`
`175`	`175`	`.iter()`
`176`	`176`	`.filter_map(\|item\| *item)`
	`177`	`+ .rev()`
`177`	`178`	`.all(\|scope\| self.scopes.get_flags(scope).is_top())`
`178`	`179`	`}`
`179`	`180`