feat(ext/node): add sqlite-type symbol for DatabaseSync (#30511)

Related:
nodejs/node@d1eabcb
Related: nodejs/node#59405
Related: better-auth/better-auth#3869
Related: oven-sh/bun#22109

Nowadays, there are tons of database packages, like sqlite3, sqlite,
better-sqlite, bun:sqlite... Checking the difference from them is pretty
hard.
instanceof is not good, since the developer will still need to import
the module, which is costly.
I think we should provide a symbol to distinguish different SQLite
classes, at least nodejs could make the first step.

---------

Signed-off-by: Alex Yang <himself65@outlook.com>
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

Author: himself65

ext/node/polyfills/sqlite.ts

@@ -1,7 +1,13 @@
 // Copyright 2018-2025 the Deno authors. MIT license.
 
+import { primordials } from "ext:core/mod.js";
 import { DatabaseSync, StatementSync } from "ext:core/ops";
 
+const {
+  ObjectDefineProperty,
+  SymbolFor,
+} = primordials;
+
 export const constants = {
   SQLITE_CHANGESET_OMIT: 0,
   SQLITE_CHANGESET_REPLACE: 1,
@@ -14,6 +20,14 @@ export const constants = {
   SQLITE_CHANGESET_FOREIGN_KEY: 5,
 };
 
+const sqliteTypeSymbol = SymbolFor("sqlite-type");
+ObjectDefineProperty(DatabaseSync.prototype, sqliteTypeSymbol, {
+  __proto__: null,
+  value: "node:sqlite",
+  enumerable: false,
+  configurable: true,
+});
+
 export { DatabaseSync, StatementSync };
 
 export default {

tests/unit_node/sqlite_test.ts

@@ -4,6 +4,16 @@ import { assert, assertEquals, assertThrows } from "@std/assert";
 
 const tempDir = Deno.makeTempDirSync();
 
+Deno.test("[node/sqlite] sqlite-type symbol", () => {
+  const db = new DatabaseSync(":memory:");
+  const sqliteTypeSymbol = Symbol.for("sqlite-type");
+
+  // @ts-ignore `sqliteTypeSymbol` is not available in `@types:node` for version 24.3
+  assertEquals(db[sqliteTypeSymbol], "node:sqlite");
+
+  db.close();
+});
+
 Deno.test("[node/sqlite] in-memory databases", () => {
   const db1 = new DatabaseSync(":memory:");
   const db2 = new DatabaseSync(":memory:");