lit/migrate-v8-to-v9

What problem does it solve?

This skill solves the problem of upgrading TanStack Table for Lit from v8 to v9 without getting stuck on breaking API and typing changes.

Core Features & Use Cases

• Controller migration: Updates the v8 TableController(host, () => options) pattern to v9 new TableController(host) plus .table(options, selector?).
• Row model + feature registration: Replaces get*RowModel options with _features registration and _rowModels factories (e.g., sorting, filtering, pagination).
• Rendering and typing changes: Migrates flexRender(def, ctx) to FlexRender({ cell|header|footer }) and updates ColumnDef/Table generics to include TFeatures.

Quick Start

Ask an AI agent to migrate your existing @tanstack/lit-table v8 code to the v9 TableController + _features/_rowModels + FlexRender({ ... }) patterns while preserving your current columns, data, and enabled features.