From f0dfd8b82ac77c792193d89ca590ad0121254ec5 Mon Sep 17 00:00:00 2001
From: Manuel <mserret99@gmail.com>
Date: Sun, 9 Feb 2025 18:58:51 +0100
Subject: [PATCH] fix: support `TSModuleDeclaration`

---
 .changeset/fresh-nails-lay.md                    |  5 +++++
 src/handlers.js                                  | 16 ++++++++++++++++
 test/samples/ts-module-declaration/expected.ts   |  7 +++++++
 .../ts-module-declaration/expected.ts.map        | 11 +++++++++++
 test/samples/ts-module-declaration/input.ts      |  7 +++++++
 5 files changed, 46 insertions(+)
 create mode 100644 .changeset/fresh-nails-lay.md
 create mode 100644 test/samples/ts-module-declaration/expected.ts
 create mode 100644 test/samples/ts-module-declaration/expected.ts.map
 create mode 100644 test/samples/ts-module-declaration/input.ts

diff --git a/.changeset/fresh-nails-lay.md b/.changeset/fresh-nails-lay.md
new file mode 100644
index 0000000..4ea8807
--- /dev/null
+++ b/.changeset/fresh-nails-lay.md
@@ -0,0 +1,5 @@
+---
+'esrap': patch
+---
+
+fix: support `TSModuleDeclaration`
diff --git a/src/handlers.js b/src/handlers.js
index fe098ef..379f4c8 100644
--- a/src/handlers.js
+++ b/src/handlers.js
@@ -1506,6 +1506,22 @@ const handlers = {
 		state.commands.push(dedent, newline, '}', newline);
 	},
 
+	TSModuleBlock(node, state) {
+		state.commands.push(' {', indent, newline);
+		sequence(node.body, state, false, handle);
+		state.commands.push(dedent, newline, '}');
+	},
+
+	TSModuleDeclaration(node, state) {
+		if (node.declare) state.commands.push('declare ');
+		else state.commands.push('namespace ');
+
+		handle(node.id, state);
+
+		if (!node.body) return;
+		handle(node.body, state);
+	},
+
 	TSNonNullExpression(node, state) {
 		handle(node.expression, state);
 		state.commands.push('!');
diff --git a/test/samples/ts-module-declaration/expected.ts b/test/samples/ts-module-declaration/expected.ts
new file mode 100644
index 0000000..106d6b3
--- /dev/null
+++ b/test/samples/ts-module-declaration/expected.ts
@@ -0,0 +1,7 @@
+declare global {
+	namespace App {
+		interface Error {}
+	}
+}
+
+export {};
\ No newline at end of file
diff --git a/test/samples/ts-module-declaration/expected.ts.map b/test/samples/ts-module-declaration/expected.ts.map
new file mode 100644
index 0000000..2b334e8
--- /dev/null
+++ b/test/samples/ts-module-declaration/expected.ts.map
@@ -0,0 +1,11 @@
+{
+  "version": 3,
+  "names": [],
+  "sources": [
+    "input.js"
+  ],
+  "sourcesContent": [
+    "declare global {\n\tnamespace App {\n\t\tinterface Error {}\n\t}\n}\n\nexport {};\n"
+  ],
+  "mappings": "QAAQ,MAAM;WACH,GAAG;YACF,KAAK;;;;"
+}
\ No newline at end of file
diff --git a/test/samples/ts-module-declaration/input.ts b/test/samples/ts-module-declaration/input.ts
new file mode 100644
index 0000000..e05a84c
--- /dev/null
+++ b/test/samples/ts-module-declaration/input.ts
@@ -0,0 +1,7 @@
+declare global {
+	namespace App {
+		interface Error {}
+	}
+}
+
+export {};