fix: improve prisma singleton

packages/prisma/index.ts

@@ -11,47 +11,53 @@ if (!!process.env.NEXT_PUBLIC_DEBUG) prismaOptions.log = ["query", "error", "war
 export const customPrisma = (options?: Prisma.PrismaClientOptions) =>
   new PrismaClientWithoutExtension({ ...prismaOptions, ...options }).$extends(withAccelerate());
 
-export const prisma = (function () {
+const prismaClient = (function () {
-  // Prevents flooding with idle connections
+  let instance: unknown;
-  const prismaWithoutClientExtensions = new PrismaClientWithoutExtension(prismaOptions);
+  return () => {
-  // If any changed on middleware server restart is required
+    if (instance) return instance;
-  // TODO: Migrate it to $extends
+    // Prevents flooding with idle connections
-  bookingReferenceMiddleware(prismaWithoutClientExtensions);
+    const prismaWithoutClientExtensions = new PrismaClientWithoutExtension(prismaOptions);
+    // If any changed on middleware server restart is required
+    // TODO: Migrate it to $extends
+    bookingReferenceMiddleware(prismaWithoutClientExtensions);
 
-  // FIXME: Due to some reason, there are types failing in certain places due to the $extends. Fix it and then enable it
+    // FIXME: Due to some reason, there are types failing in certain places due to the $extends. Fix it and then enable it
-  // Specifically we get errors like `Type 'string | Date | null | undefined' is not assignable to type 'Exact<string | Date | null | undefined, string | Date | null | undefined>'`
+    // Specifically we get errors like `Type 'string | Date | null | undefined' is not assignable to type 'Exact<string | Date | null | undefined, string | Date | null | undefined>'`
-  const prismaWithClientExtensions = prismaWithoutClientExtensions
+    const prismaWithClientExtensions = prismaWithoutClientExtensions
-    //
+      //
-    .$extends(withAccelerate());
+      .$extends(withAccelerate());
-  // .$extends({
+    // .$extends({
-  //   query: {
+    //   query: {
-  //     $allModels: {
+    //     $allModels: {
-  //       async $allOperations({ model, operation, args, query }) {
+    //       async $allOperations({ model, operation, args, query }) {
-  //         const start = performance.now();
+    //         const start = performance.now();
-  //         /* your custom logic here */
+    //         /* your custom logic here */
-  //         const res = await query(args);
+    //         const res = await query(args);
-  //         const end = performance.now();
+    //         const end = performance.now();
-  //         logger.debug("Query Perf: ", `${model}.${operation} took ${(end - start).toFixed(2)}ms\n`);
+    //         logger.debug("Query Perf: ", `${model}.${operation} took ${(end - start).toFixed(2)}ms\n`);
-  //         return res;
+    //         return res;
-  //       },
+    //       },
-  //     },
+    //     },
-  //   },
+    //   },
-  // });
+    // });
-  // .$extends({
+    // .$extends({
-  //   name: "teamUpdateWithMetadata",
+    //   name: "teamUpdateWithMetadata",
-  //   query: {
+    //   query: {
-  //     team: {
+    //     team: {
-  //       async update({ model, operation, args, query }) {
+    //       async update({ model, operation, args, query }) {
-  //         if (args.data.metadata) {
+    //         if (args.data.metadata) {
-  //          // Prepare args.data with merged metadata
+    //          // Prepare args.data with merged metadata
-  //         }
+    //         }
-  //         return query(args);
+    //         return query(args);
-  //       },
+    //       },
-  //     },
+    //     },
-  //   },
+    //   },
-  // })
+    // })
-  return prismaWithClientExtensions;
+    instance = prismaWithClientExtensions;
+    return prismaWithClientExtensions;
+  };
 })();
+export const prisma = prismaClient();
 
 export type PrismaClient = typeof prisma;
 export default prisma;