From b7f6f4424a42c4dd0d3a795c20f14dc75263f827 Mon Sep 17 00:00:00 2001
From: Micha Reiser <micha@rome.tools>
Date: Fri, 23 Dec 2022 11:51:33 +0100
Subject: [PATCH] fix(rome_js_formatter): Union in mapped type

## Summary

Fixes #4074
---
 crates/rome_js_formatter/src/ts/types/union_type.rs    |  1 +
 .../tests/specs/ts/type/union_type.ts.snap             | 10 +++++-----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/crates/rome_js_formatter/src/ts/types/union_type.rs b/crates/rome_js_formatter/src/ts/types/union_type.rs
index 9a8d24413f6e..7c2ea9c71660 100644
--- a/crates/rome_js_formatter/src/ts/types/union_type.rs
+++ b/crates/rome_js_formatter/src/ts/types/union_type.rs
@@ -53,6 +53,7 @@ impl FormatNodeRule<TsUnionType> for FormatTsUnionType {
                                 | JsSyntaxKind::TS_TUPLE_TYPE_ELEMENT_LIST
                                 | JsSyntaxKind::TS_TYPE_ASSERTION_ASSIGNMENT
                                 | JsSyntaxKind::TS_TYPE_ARGUMENT_LIST
+                                | JsSyntaxKind::TS_MAPPED_TYPE
                         )
                     )
                 }
diff --git a/crates/rome_js_formatter/tests/specs/ts/type/union_type.ts.snap b/crates/rome_js_formatter/tests/specs/ts/type/union_type.ts.snap
index f16699b20f3b..20ac9d39a6af 100644
--- a/crates/rome_js_formatter/tests/specs/ts/type/union_type.ts.snap
+++ b/crates/rome_js_formatter/tests/specs/ts/type/union_type.ts.snap
@@ -21,7 +21,7 @@ type Comments =
 trailing type */
 
 type A = [
-    /*leading comment with new line*/ 
+    /*leading comment with new line*/
     A | B,
     ];
 
@@ -377,10 +377,10 @@ const fooo: SomeThingWithShortMappedType<{
 
 const fooo: SomeThingWithLongMappedType<{
 	[P in
-			| AAAAAAAAAAAAAAAAA
-			| BBBBBBBBBBBB
-			| CCCCCCCCCCCCCCCCCCCCC
-			| DDDDDDDDDDDDDDDDDDDDDDDDDDDDD]: number;
+		| AAAAAAAAAAAAAAAAA
+		| BBBBBBBBBBBB
+		| CCCCCCCCCCCCCCCCCCCCC
+		| DDDDDDDDDDDDDDDDDDDDDDDDDDDDD]: number;
 }> = {};
 
 export type A =