From fc70e992a78e0bb506ad2cd28b3e50359df66f06 Mon Sep 17 00:00:00 2001
From: fisker Cheung <lionkay@gmail.com>
Date: Tue, 21 Oct 2025 22:55:25 +0800
Subject: [PATCH] Simplify `TSModuleDeclaration` print (#18116)

---
 src/language-js/print/typescript.js | 35 ++++++-----------------------
 1 file changed, 7 insertions(+), 28 deletions(-)

diff --git a/src/language-js/print/typescript.js b/src/language-js/print/typescript.js
index 86697c074..e5beda621 100644
--- a/src/language-js/print/typescript.js
+++ b/src/language-js/print/typescript.js
@@ -278,34 +278,13 @@ function printTypescript(path, options, print) {
       ];
     case "TSExternalModuleReference":
       return printCallExpression(path, options, print);
-    case "TSModuleDeclaration": {
-      const parts = [];
-      const { parent } = path;
-      const parentIsDeclaration = parent.type === "TSModuleDeclaration";
-      const bodyIsDeclaration = node.body?.type === "TSModuleDeclaration";
-
-      if (parentIsDeclaration) {
-        parts.push(".");
-      } else {
-        parts.push(printDeclareToken(path));
-
-        if (node.kind !== "global") {
-          parts.push(node.kind, " ");
-        }
-      }
-
-      parts.push(print("id"));
-
-      if (bodyIsDeclaration) {
-        parts.push(print("body"));
-      } else if (node.body) {
-        parts.push(" ", group(print("body")));
-      } else {
-        parts.push(options.semi ? ";" : "");
-      }
-
-      return parts;
-    }
+    case "TSModuleDeclaration":
+      return [
+        printDeclareToken(path),
+        node.kind === "global" ? "" : `${node.kind} `,
+        print("id"),
+        node.body ? [" ", group(print("body"))] : options.semi ? ";" : "",
+      ];
 
     case "TSConditionalType":
       return printTernary(path, options, print);