🦴 Add viewer backbone

apps/viewer/libs/prisma.ts

@@ -0,0 +1,15 @@
+import { PrismaClient } from 'db'
+
+declare const global: { prisma: PrismaClient }
+let prisma: PrismaClient
+
+if (process.env.NODE_ENV === 'production') {
+  prisma = new PrismaClient()
+} else {
+  if (!global.prisma) {
+    global.prisma = new PrismaClient()
+  }
+  prisma = global.prisma
+}
+
+export default prisma