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migrate-v8-to-v9

Migrate Svelte tables from Table v8 to v9 by reviewing table creation, rendering, state handling, and shared hooks. The checklist also guides type checking and verification of data updates and enabled table features.

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Migrate svelte Table v8 to v9. Audit framework construction, rendering, state, and app hooks, with shared API changes in the core migration skill.

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Good for

  • Migrating Svelte tables from Table v8 to v9
  • Replacing writable-store setup with runes and getters
  • Reviewing rendering and state handling after migration
  • Checking types and table behavior after an upgrade

Files included (2)

  • SKILL.md2.9 KB
  • references/adapter-migration.md3.6 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Svelte v8-to-v9 migration checklist

Before starting, run intent load @tanstack/table-core#migrate-v8-to-v9. Audit its entire shared checklist and read the detailed core mappings for APIs present in the application. This checklist adds the Svelte-specific changes.

Framework prerequisite: Svelte 5 (svelte ^5.0.0); migrate Svelte 3/4 components before Table.

Adapter audit

  • Upgrade to Svelte 5 and replace old writable-store table setup with runes/getters.
  • Replace createSvelteTable with createTable; preserve changing data and controlled slices through getters.
  • Configure explicit features/row-model slots and complete the shared core checklist.
  • Remove creation selectors, selected table.state, subscribeTable, and SubscribeSource from earlier v9 code.
  • Update SvelteTable to two generic parameters and AppSvelteTable to five; remove selected-state generics from useTableContext.
  • Read atoms/store in templates or tracked runes. Use per-slice updater callbacks, createTableState, or external Svelte Store atoms instead of global onStateChange.
  • Render with FlexRender, renderComponent, or renderSnippet. Use the shipped rune-aware createTableHook only for repeated conventions.

Load the affected details

When the audit finds old Svelte construction, state, rendering, or app-hook code, read adapter migration details before editing it. For a replacement render scaffold, read getting started. For controlled or stale state after migration, read table state.

Shared pinning, sizing, sorting, selection, prototype-method, type, and registry changes stay in the core migration references. Renaming createSvelteTable alone does not complete the migration.

Verify the migration

  • Type-check against the installed v9 adapter and exercise every enabled client/manual feature flow.
  • Verify external state writes, reactive data replacement, and the framework rendering paths changed above.
  • Complete the core checklist, including layout and selection behavior when those features are used.
  • Replace temporary stockFeatures when the target is explicit feature tree-shaking.

API discovery

Inspect node_modules/@tanstack/svelte-table/dist/index.d.ts and the exported adapter declarations. Use node_modules/@tanstack/table-core/dist/index.d.ts for shared APIs.

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