first commit

nest-websocket/lib/db.ts

@@ -0,0 +1,12 @@
+import { PrismaClient } from '@prisma/client';
+
+declare global {
+  // eslint-disable-next-line no-var
+  var prisma: PrismaClient | undefined;
+}
+
+export const db = globalThis.prisma || new PrismaClient();
+
+if (process.env.NODE_ENV !== 'production') {
+  globalThis.prisma = db;
+}