What problem does it solve? Migrating ASP.NET MVC applications to Node.js + React stalls when teams discover dozens of commercial and OSS .NET packages (Infragistics, Crystal Reports, Hangfire, Serilog) with no obvious JavaScript equivalent. This Skill turns that dependency inventory into a concrete replacement plan with install commands and code sketches. ## Core Features & Use Cases - Dependency Discovery: Scan packages.config, .csproj files, Razor views, and JavaScript for vendor namespaces and widget initializers like igGrid. - Replacement Mapping: Route each package family (UI grids, PDF, reports, logging, jobs, DI, Excel, images, messaging, cache) to a detailed reference file with recommended npm packages. - Code-Level Guidance: Provides working examples for AG Grid, TanStack Table, pdfkit, pdf-lib, BullMQ, pino, ExcelJS, sharp, zod, and more. - Use Case: During Phase 0 discovery of an ASP.NET MVC migration, you find Infragistics igGrid, iTextSharp, and Hangfire in the codebase. Use this Skill to decide between AG Grid Community vs Enterprise, replace PDF generation with pdfkit, and move scheduled jobs to BullMQ with retry semantics. ## Quick Start Scan my ASP.NET MVC project's packages.config and .csproj files and produce a Node.js + React replacement plan for every third-party .NET dependency found.