From 0791b3aa8a4765bd3037ab8761d53b9a61567d5d Mon Sep 17 00:00:00 2001
From: Bart Blast <bart@bartblast.com>
Date: Thu, 17 Oct 2024 15:11:58 +0200
Subject: [PATCH] Serialize boxed maps

---
 assets/js/serializer.mjs            |  4 ++++
 test/javascript/serializer_test.mjs | 31 ++++++++++++++++++++++++++++-
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/assets/js/serializer.mjs b/assets/js/serializer.mjs
index ce17d2416..53de70f4b 100644
--- a/assets/js/serializer.mjs
+++ b/assets/js/serializer.mjs
@@ -26,6 +26,10 @@ export default class Serializer {
         return `__integer__:${value.value.toString()}`;
       }
 
+      if (value?.type === "map") {
+        return {...value, data: Object.values(value.data)};
+      }
+
       if (typeof value === "bigint") {
         return `__bigint__:${value.toString()}`;
       }
diff --git a/test/javascript/serializer_test.mjs b/test/javascript/serializer_test.mjs
index 0d1d1d30b..447696a97 100644
--- a/test/javascript/serializer_test.mjs
+++ b/test/javascript/serializer_test.mjs
@@ -10,7 +10,7 @@ import Type from "../../assets/js/type.mjs";
 
 defineGlobalErlangAndElixirModules();
 
-describe.only("Serializer", () => {
+describe("Serializer", () => {
   describe("serialize()", () => {
     const serialize = Serializer.serialize;
 
@@ -120,6 +120,35 @@ describe.only("Serializer", () => {
           assert.equal(serialize(term), expected);
         });
       });
+
+      describe("map", () => {
+        it("top-level", () => {
+          const term = Type.map([
+            [Type.atom("x"), Type.integer(1)],
+            [Type.bitstring("y"), Type.float(1.23)],
+          ]);
+
+          const expected =
+            '[1,{"type":"map","data":[["__atom__:x","__integer__:1"],["__binary__:y","__float__:1.23"]]}]';
+
+          assert.equal(serialize(term), expected);
+        });
+
+        it("nested", () => {
+          const term = {
+            a: Type.map([
+              [Type.atom("x"), Type.integer(1)],
+              [Type.bitstring("y"), Type.float(1.23)],
+            ]),
+            b: 2,
+          };
+
+          const expected =
+            '[1,{"a":{"type":"map","data":[["__atom__:x","__integer__:1"],["__binary__:y","__float__:1.23"]]},"b":2}]';
+
+          assert.equal(serialize(term), expected);
+        });
+      });
     });
 
     describe("JS terms", () => {