Merge pull request prisma#4441 from prisma/fix-3372

fix(ts-client): types for nullable objects

Author: timsuchanek

cli/packages/prisma-client-lib/src/codegen/generators/__tests__/__snapshots__/flow-client.test.js.md

@@ -13,7 +13,16 @@ Generated by [AVA](https://ava.li).
     var prisma_lib_1 = require("prisma-client-lib");␊
     var typeDefs = require("./prisma-schema").typeDefs;␊
     ␊
-    var models = [];␊
+    var models = [␊
+      {␊
+        name: "Post",␊
+        embedded: false␊
+      },␊
+      {␊
+        name: "User",␊
+        embedded: false␊
+      }␊
+    ];␊
     exports.Prisma = prisma_lib_1.makePrismaClientClass({ typeDefs, models });␊
     exports.prisma = new exports.Prisma();␊
     `