From 4e8fbf4461f2e1755694aa40129c523657dd62dc Mon Sep 17 00:00:00 2001
From: Sam Willis <sam.willis@gmail.com>
Date: Mon, 22 Apr 2024 10:10:14 +0000
Subject: [PATCH] Handle undefined as though its a null when serializing (#84)

---
 packages/pglite/src/types.ts        |  2 +-
 packages/pglite/tests/basic.test.js | 20 +++++++++++++++++---
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/packages/pglite/src/types.ts b/packages/pglite/src/types.ts
index 6260e64b..4617de87 100644
--- a/packages/pglite/src/types.ts
+++ b/packages/pglite/src/types.ts
@@ -188,7 +188,7 @@ export function serializerFor(x: any): Serializer {
 }
 
 export function serializeType(x: any): [string | null, number] {
-  if (x === null) {
+  if (x === null || x === undefined) {
     return [null, 0];
   }
   return serializerFor(x)(x);
diff --git a/packages/pglite/tests/basic.test.js b/packages/pglite/tests/basic.test.js
index db59c044..c19e8642 100644
--- a/packages/pglite/tests/basic.test.js
+++ b/packages/pglite/tests/basic.test.js
@@ -90,14 +90,16 @@ test("basic types", async (t) => {
       blob BYTEA,
       array_text TEXT[],
       array_number INT[],
-      nested_array_float FLOAT[][]
+      nested_array_float FLOAT[][],
+      test_null INT,
+      test_undefined INT
     );
   `);
 
   await db.query(
     `
-    INSERT INTO test (text, number, float, bigint, bool, date, timestamp, json, blob, array_text, array_number, nested_array_float)
-    VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12);
+    INSERT INTO test (text, number, float, bigint, bool, date, timestamp, json, blob, array_text, array_number, nested_array_float, test_null, test_undefined)
+    VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14);
   `,
     [
       "test",
@@ -112,6 +114,8 @@ test("basic types", async (t) => {
       ["test1", "test2", "test,3"],
       [1, 2, 3],
       [[1.1, 2.2], [3.3, 4.4]],
+      null,
+      undefined
     ]
   );
 
@@ -134,6 +138,8 @@ test("basic types", async (t) => {
         array_text: ["test1", "test2", "test,3"],
         array_number: [1, 2, 3],
         nested_array_float: [[1.1, 2.2], [3.3, 4.4]],
+        test_null: null,
+        test_undefined: null,
       },
     ],
     fields: [
@@ -189,6 +195,14 @@ test("basic types", async (t) => {
         name: "nested_array_float",
         dataTypeID: 1022,
       },
+      {
+        name: "test_null",
+        dataTypeID: 23,
+      },
+      {
+        name: "test_undefined",
+        dataTypeID: 23,
+      },
     ],
     affectedRows: 0,
   });