fix(codegen): print if else without block with proper indentation (#8135)

crates/oxc_codegen/examples/codegen.rs

@@ -3,7 +3,7 @@ use std::path::Path;
 
 use oxc_allocator::Allocator;
 use oxc_codegen::{CodeGenerator, CodegenOptions};
-use oxc_parser::{Parser, ParserReturn};
+use oxc_parser::{ParseOptions, Parser, ParserReturn};
 use oxc_span::SourceType;
 use pico_args::Arguments;
 
@@ -52,7 +52,12 @@ fn parse<'a>(
     source_text: &'a str,
     source_type: SourceType,
 ) -> Option<ParserReturn<'a>> {
-    let ret = Parser::new(allocator, source_text, source_type).parse();
+    let ret = Parser::new(allocator, source_text, source_type)
+        .with_options(ParseOptions {
+            allow_return_outside_function: true,
+            ..ParseOptions::default()
+        })
+        .parse();
     if !ret.errors.is_empty() {
         for error in ret.errors {
             println!("{:?}", error.with_source_code(source_text.to_string()));

crates/oxc_codegen/src/gen.rs

@@ -301,7 +301,12 @@ fn print_if(if_stmt: &IfStatement<'_>, p: &mut Codegen, ctx: Context) {
                 p.print_soft_newline();
             }
         }
-        stmt => p.print_body(stmt, false, ctx),
+        stmt => {
+            p.print_body(stmt, false, ctx);
+            if if_stmt.alternate.is_some() {
+                p.print_indent();
+            }
+        }
     }
     if let Some(alternate) = if_stmt.alternate.as_ref() {
         p.print_semicolon_if_needed();

crates/oxc_codegen/tests/integration/unit.rs

@@ -92,6 +92,18 @@ fn for_stmt() {
     );
 }
 
+#[test]
+fn if_stmt() {
+    test(
+        "function f() { if (foo) return foo; else if (bar) return foo; }",
+        "function f() {\n\tif (foo) return foo;\n\telse if (bar) return foo;\n}\n",
+    );
+    test_minify(
+        "function f() { if (foo) return foo; else if (bar) return foo; }",
+        "function f(){if(foo)return foo;else if(bar)return foo}",
+    );
+}
+
 #[test]
 fn shorthand() {
     test("let _ = { x }", "let _ = { x };\n");