From 16020d10b8b963a07f45805d4551cfaa865c5404 Mon Sep 17 00:00:00 2001
From: Dunqing <dengqing0821@gmail.com>
Date: Thu, 23 Nov 2023 15:00:34 +0800
Subject: [PATCH] feat(prettier): support print empty switch

---
 crates/oxc_prettier/src/format/mod.rs       | 26 ++++++++++++++-------
 tasks/prettier_conformance/prettier.snap.md |  3 +--
 2 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/crates/oxc_prettier/src/format/mod.rs b/crates/oxc_prettier/src/format/mod.rs
index 0ca9401b33946..9aca3f9bcd4cf 100644
--- a/crates/oxc_prettier/src/format/mod.rs
+++ b/crates/oxc_prettier/src/format/mod.rs
@@ -408,18 +408,17 @@ impl<'a> Format<'a> for SwitchStatement<'a> {
         header_parts.push(softline!());
         header_parts.push(ss!(")"));
 
-        parts.push(group!(p, Doc::Array(header_parts)));
+        parts.push(Doc::Group(Group::new(header_parts, false)));
 
         parts.push(ss!(" {"));
 
         let mut cases_parts = p.vec();
 
         for case in &self.cases {
-            cases_parts.push(hardline!());
-            cases_parts.push(format!(p, case));
+            cases_parts.push(indent!(p, hardline!(), format!(p, case)));
         }
 
-        parts.push(indent!(p, hardline!(), group!(p, Doc::Array(cases_parts))));
+        parts.extend(cases_parts);
 
         parts.push(hardline!());
         parts.push(ss!("}"));
@@ -441,12 +440,23 @@ impl<'a> Format<'a> for SwitchCase<'a> {
         }
 
         let mut consequent_parts = p.vec();
-        for stmt in &self.consequent {
-            consequent_parts.push(hardline!());
-            consequent_parts.push(format!(p, stmt));
+
+        if !(self.consequent.len() == 1
+            && matches!(self.consequent[0], Statement::EmptyStatement(_)))
+        {
+            for stmt in &self.consequent {
+                consequent_parts.push(hardline!());
+                consequent_parts.push(format!(p, stmt));
+            }
         }
 
-        parts.push(indent!(p, hardline!(), group!(p, Doc::Array(consequent_parts))));
+        if !consequent_parts.is_empty() {
+            parts.push(indent!(
+                p,
+                hardline!(),
+                Doc::Group(Group { contents: consequent_parts, should_break: false })
+            ));
+        }
 
         Doc::Array(parts)
     }
diff --git a/tasks/prettier_conformance/prettier.snap.md b/tasks/prettier_conformance/prettier.snap.md
index 79973a518f1fd..d51ec4443135c 100644
--- a/tasks/prettier_conformance/prettier.snap.md
+++ b/tasks/prettier_conformance/prettier.snap.md
@@ -1,4 +1,4 @@
-Compatibility: 145/597 (24.29%)
+Compatibility: 146/597 (24.46%)
 
 # Failed
 
@@ -577,7 +577,6 @@ Compatibility: 145/597 (24.29%)
 * switch/comments2.js
 * switch/empty_lines.js
 * switch/empty_statement.js
-* switch/empty_switch.js
 * switch/switch.js
 
 ### template