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.