sdk-beside-app

Extract web app logic into an npm package with dual CJS/ESM builds.

8|Updated Mar 8, 2026
One-click install
npx skills add https://github.com/SufficientDaikon/omniskill --skill sdk-beside-app
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: sdk-beside-app
Source: https://github.com/SufficientDaikon/omniskill/tree/main/skills/sdk-beside-app
Command: npx skills add https://github.com/SufficientDaikon/omniskill --skill sdk-beside-app

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill automates the process of extracting reusable core logic from a web application into a standalone, publishable npm package, making it available for both the original application and external developers.

Core Features & Use Cases

  • Logic Extraction: Identifies and separates framework-agnostic business logic from web application code.
  • Package Creation: Generates a complete npm package structure with package.json, tsconfig.json, and build configurations.
  • Dual Build: Supports both CommonJS (CJS) and ECMAScript Modules (ESM) formats with TypeScript declarations.
  • CLI Integration: Optionally includes a command-line interface for the extracted SDK.
  • Self-Consumption: Ensures the web application consumes the newly created package, validating the extraction.
  • Use Case: You have a complex data validation and transformation module within your Next.js application that you want to share with other projects or offer as a public library. This skill will help you package it correctly.

Quick Start

Use the sdk-beside-app skill to extract the core business logic from the current web application into a new npm package named 'my-utility-sdk'.

Frequently Asked Questions about sdk-beside-app

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I extract reusable logic from a web app into an npm package?

To extract reusable logic into an npm package, you separate framework-agnostic business logic from your web application code and generate a standalone package structure with necessary build configurations.

How do I configure a TypeScript npm package for both CommonJS and ESM?

Configuring dual CJS and ESM builds for a TypeScript package involves setting up build configurations that generate both module formats alongside TypeScript declaration files for broad consumer compatibility.

Can I add a CLI and sub-path exports when packaging a JavaScript SDK?

Yes, you can include a command-line interface and configure sub-path exports in your package.json when packaging a JavaScript SDK to allow flexible consumption of specific modules.

What is the best way to ensure a web app correctly consumes a newly extracted SDK?

The best way to ensure correct consumption is performing a self-consumption validation step where the original web application imports the newly created package to verify the extraction works.

Does this packaging approach work for monorepo and Next.js applications?

Yes, this approach works for monorepo and Next.js applications by identifying complex data validation or transformation modules and packaging them correctly for sharing across other projects.