Guide a TanStack Table migration from v8 to v9 in Lit applications. Review table construction, rendering helpers, state updates, and shared application hooks, alongside the required migration checks for the core library.
Migrate lit Table v8 to v9. Audit framework construction, rendering, state, and app hooks, with shared API changes in the core migration skill.
Review the instructions the agent will receive before you install.
Load intent load @tanstack/table-core#migrate-v8-to-v9 first and audit its entire shared checklist. It owns feature registration, row-model slots, state/reset changes, prototype methods, logical pinning, sizing/resizing, sorting, selection, helpers, and TypeScript mappings.
Lit 3.1.3 or newer within v3 (lit ^3.1.3) and @lit/context ^1.1.0 are required.
TableController<typeof features, TData>(this) as a stable host field.controller.table property/options thunk with controller.table(options, selector?) during render.table.state for rendering; use atom snapshots in handlers or stable table.subscribe selectors for template regions.FlexRender({ cell }), FlexRender({ header }), or FlexRender({ footer }) and preserve instance-method receivers.useAppTable once and call its .table() during render.Read adapter-migration when changing construction, rendering, state, or app hooks. Read the relevant core migration references for each affected shared API; this adapter checklist does not replace that audit.
For complete v9 construction examples, read getting-started. For reactive state repairs, read table-state.
Inspect node_modules/@tanstack/lit-table/dist/index.d.ts, then TableController.d.ts, flexRender.d.ts, or the relevant exported declaration. Core feature APIs are in node_modules/@tanstack/table-core/dist/features/.
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