fix(ext/node): represent sqlite blob as Uint8Array (#27889)

ext/node/ops/sqlite/statement.rs

@@ -155,10 +155,10 @@ impl StatementSync {
           let size = ffi::sqlite3_column_bytes(self.inner, index);
           let value =
             std::slice::from_raw_parts(value as *const u8, size as usize);
-          let value =
-            v8::ArrayBuffer::new_backing_store_from_vec(value.to_vec())
-              .make_shared();
-          v8::ArrayBuffer::with_backing_store(scope, &value).into()
+          let bs = v8::ArrayBuffer::new_backing_store_from_vec(value.to_vec())
+            .make_shared();
+          let ab = v8::ArrayBuffer::with_backing_store(scope, &bs);
+          v8::Uint8Array::new(scope, ab, 0, size as _).unwrap().into()
         }
         ffi::SQLITE_NULL => v8::null(scope).into(),
         _ => v8::undefined(scope).into(),

tests/unit_node/sqlite_test.ts

@@ -1,6 +1,6 @@
 // Copyright 2018-2025 the Deno authors. MIT license.
 import { DatabaseSync } from "node:sqlite";
-import { assertEquals, assertThrows } from "@std/assert";
+import { assert, assertEquals, assertThrows } from "@std/assert";
 
 Deno.test("[node/sqlite] in-memory databases", () => {
   const db1 = new DatabaseSync(":memory:");
@@ -63,3 +63,12 @@ Deno.test("[node/sqlite] StatementSync read bigints are supported", () => {
   stmt.setReadBigInts(true);
   assertEquals(stmt.get(), { key: 1n, __proto__: null });
 });
+
+Deno.test("[node/sqlite] StatementSync blob are Uint8Array", () => {
+  const db = new DatabaseSync(":memory:");
+  const obj = db.prepare("select cast('test' as blob)").all();
+
+  assertEquals(obj.length, 1);
+  const row = obj[0] as Record<string, Uint8Array>;
+  assert(row["cast('test' as blob)"] instanceof Uint8Array);
+});