replit-sdk-patterns

name	replit-sdk-patterns
description	Apply production-ready patterns for Replit Database, Object Storage, and Auth APIs. Use when implementing Replit integrations, structuring data access layers, or establishing team coding standards for Replit services. Trigger with phrases like "replit patterns", "replit best practices", "replit code patterns", "idiomatic replit", "replit SDK".
allowed-tools	Read, Write, Edit
version	1.12.0
license	MIT
author	Jeremy Longshore <[e-mail]>
tags	["saas","replit","python","typescript","patterns"]
compatibility	Designed for Claude Code

Replit SDK Patterns

Overview

Production-ready patterns for Replit's built-in services: Key-Value Database (@replit/database / replit.db), Object Storage (@replit/object-storage), PostgreSQL (DATABASE_URL), and Auth headers. Covers singleton clients, error handling, and type-safe wrappers.

Prerequisites

• .replit and replit.nix configured (see replit-install-auth)
• Familiarity with async/await patterns
• Understanding of Replit's service model

Instructions

Step 1: Database Client Singleton (Node.js)

// src/db/kv.ts — Replit Key-Value Database wrapper
import Database from '@replit/database';

let instance: Database | null = null;

export function getKV(): Database {
  if (!instance) {
    instance = new Database();
  }
  return instance;
}

// Type-safe KV operations
export async function kvGet<T>(key: string): Promise<T | null> {
  const value = await getKV().get(key);
  return value as T | null;
}

export async function kvSet<T>(: , : T): <> {
   ().(key, value);
}

   (): <[]> {
   ().(prefix);
}

   (): <> {
   ().(key);
}