🎯 Svelte Table Kit

A comprehensive, AI-configurable data table component for Svelte and SvelteKit, built on TanStack Table v8.

Svelte Table Kit brings Airtable-like functionality to your Svelte applications with a headless, fully customizable table component. Perfect for dashboards, data grids, and complex data visualization needs.

✨ Features

Core Table Features:

• 🎯 Column visibility picker with show/hide controls
• 📏 Column resizing with drag handles (62px-1000px range)
• 🔄 Column reordering via native HTML5 drag & drop
• 📐 Row height control - 4 sizes: short, medium, tall, extra tall
• ↔️ Column spacing control - 3 sizes: narrow, normal, wide
• 🔍 Advanced filtering - 12 operators with AND/OR logic
• 📊 Multi-level grouping - Up to 3 nested levels (like Airtable)
• ⬆️ Flexible sorting - Column header or Airtable-style sort control
• 📄 Pagination with customizable page sizes
• 💾 LocalStorage persistence for all user preferences
• ✂️ Text truncation with ellipsis for long content
• 📋 Column context menu - Quick access to sort, filter, group, and hide actions

Advanced Filtering:

• 12 filter operators: equals, contains, starts with, greater than, etc.
• AND/OR logic between conditions
• Collapsible FilterBar UI (space-efficient)
• Active filter count badge
• Real-time filtering as you type

Sorting Options:

• Column header mode (default) - Click headers to sort with ↑↓↕ indicators
• Airtable-style control - Dedicated sort dropdown with multi-level sorting
• Choose column and direction (A → Z or Z → A)
• Multiple sort levels applied top to bottom
• Collapsible SortBar UI

Grouping & Hierarchy:

• Group by up to 3 columns simultaneously
• Expand/collapse groups with chevron buttons
• Visual indentation based on nesting level
• Item count per group
• Collapsible GroupBar UI

Column Context Menu:

• Hover over column headers to reveal menu trigger (chevron icon)
• Sort A → Z / Sort Z → A - Quick sort with active state indication
• Filter by this field - Creates pre-filled filter condition
• Group by this field - Adds column to grouping configuration
• Hide field - Remove column from view
• Actions conditionally shown based on feature flags
• Seamlessly integrates with existing controls

Developer Experience:

• 🎨 Headless design - style it your way
• 📦 Built on TanStack Table v8 (battle-tested, powerful)
• 🔒 Full TypeScript support
• 🎛️ Feature flags for granular control
• 🔌 Toolbar slot - Add custom controls to the toolbar (v0.6.0+)
• 🚀 Zero external dependencies (except TanStack Table)
• ♿ Accessible and keyboard-friendly

AI-Ready:

• 🤖 JSON-schema driven configuration
• 🧠 AI agents can generate table configs from natural language
• ⚡ Reactive config prop - Update table state dynamically without remounting (v0.5.0+)
• 📋 Preset configurations for common use cases
• 🔧 Programmatic table setup and state management

📅 View Development Roadmap - See what's coming next!

📦 Installation

npm install @shotleybuilder/svelte-table-kit

Or using pnpm:

pnpm add @shotleybuilder/svelte-table-kit

🚀 Quick Start

<script>
  import { TableKit } from '@shotleybuilder/svelte-table-kit';

  const data = [
    { id: 1, name: 'Alice', role: 'Developer', age: 28 },
    { id: 2, name: 'Bob', role: 'Designer', age: 32 },
    { id: 3, name: 'Charlie', role: 'Manager', age: 45 }
  ];

  const columns = [
    { accessorKey: 'id', header: 'ID' },
    { accessorKey: 'name', header: 'Name' },
    { accessorKey: 'role', header: 'Role' },
    { accessorKey: 'age', header: 'Age' }
  ];
</script>

<TableKit {data} {columns} storageKey="my-table" />

📚 Documentation

Basic Usage

The simplest way to use TableKit:

<TableKit {data} {columns} />

With Configuration

Customize initial table state programmatically:

<script>
  import { TableKit } from '@shotleybuilder/svelte-table-kit';
</script>

<TableKit
  {data}
  {columns}
  config={{
    id: 'my-view-v1',
    version: '1.0',
    defaultColumnOrder: ['name', 'role', 'age', 'id'],
    defaultColumnSizing: { name: 200, role: 150 },
    defaultVisibleColumns: ['name', 'role', 'age'],
    defaultFilters: [
      { id: 'f1', field: 'role', operator: 'equals', value: 'Developer' }
    ],
    defaultSorting: [
      { columnId: 'name', direction: 'asc' }
    ],
    filterLogic: 'and'
  }}
  features={{
    columnVisibility: true,
    filtering: true,
    sorting: true,
    pagination: true
  }}
/>

Reactive Configuration (v0.5.0+)

The config prop is fully reactive - update it dynamically to change table state without remounting:

<script>
  import { TableKit } from '@shotleybuilder/svelte-table-kit';

  let tableConfig = $state({
    id: 'query-1',
    version: '1.0',
    defaultFilters: [
      { id: 'f1', field: 'status', operator: 'equals', value: 'active' }
    ]
  });

  // Update config - table reacts automatically
  function showPendingItems() {
    tableConfig = {
      id: 'query-2',  // New ID triggers update
      version: '1.0',
      defaultFilters: [
        { id: 'f1', field: 'status', operator: 'equals', value: 'pending' }
      ]
    };
  }
</script>

<button on:click={showPendingItems}>Show Pending</button>
<TableKit {data} {columns} config={tableConfig} persistState={false} />

Perfect for AI-driven tables:

<script>
  let aiConfig = $state(undefined);

  async function askAI(question) {
    const response = await fetch('/api/nl-query', {
      method: 'POST',
      body: JSON.stringify({ question })
    });
    aiConfig = await response.json();  // Table updates automatically
  }
</script>

<input
  placeholder="Ask a question about the data..."
  on:submit={(e) => askAI(e.target.value)}
/>
<TableKit {data} {columns} config={aiConfig} persistState={false} />

Key Points:

• Config changes detected by comparing config.id
• Set persistState={false} to prevent localStorage conflicts
• When config is active, localStorage is automatically ignored
• No {#key} blocks needed - updates are smooth and instant

Feature Flags

Control which features are enabled:

<TableKit
  {data}
  {columns}
  features={{
    columnVisibility: true,
    columnResizing: true,
    columnReordering: true,
    filtering: true,
    sorting: true,
    sortingMode: 'control',  // 'header' (default) or 'control' (Airtable-style)
    pagination: true,
    rowSelection: false,
    grouping: false
  }}
/>

Sorting Modes:

• sortingMode: 'header' - Click column headers to sort (default behavior)
• sortingMode: 'control' - Use Airtable-style sort dropdown with multi-level support

Event Handlers

Listen to table events:

<TableKit
  {data}
  {columns}
  onRowClick={(row) => console.log('Clicked:', row)}
  onRowSelect={(rows) => console.log('Selected:', rows)}
  onStateChange={(state) => console.log('State:', state)}
/>

Custom Toolbar Controls (v0.6.0+)

Add custom controls to the left side of the toolbar using the toolbar-left slot:

<script>
  import { TableKit } from '@shotleybuilder/svelte-table-kit';
  import ViewSelector from './ViewSelector.svelte';
</script>

<TableKit {data} {columns}>
  <!-- Add custom controls to the toolbar -->
  <svelte:fragment slot="toolbar-left">
    <ViewSelector on:viewSelected={handleViewSelected} />
    <button on:click={saveView} class="btn-primary">
      Save View
    </button>
  </svelte:fragment>
</TableKit>

Use Cases:

• View management controls (save/load table configurations)
• Custom filter presets
• Quick action buttons
• Export/import controls
• Any custom toolbar buttons that should appear alongside table controls

The toolbar-left slot is positioned on the left side of the toolbar, while the built-in table controls (Filter, Sort, Group, Columns) automatically align to the right. All controls appear on the same row, creating a unified control bar.

🎨 Styling

TableKit is headless by default. You can:

1. Use default styles (coming soon)
2. Customize with classNames:

<TableKit
  {data}
  {columns}
  classNames={{
    container: 'my-container',
    table: 'my-table',
    th: 'my-header'
  }}
/>

3. Theme support:

<TableKit {data} {columns} theme="dark" />

🧬 API Reference

Props

TableConfig Type

interface TableConfig {
  id: string;                              // Required: Unique identifier for change detection
  version: string;                         // Required: Config version
  defaultColumnOrder?: string[];           // Column IDs in display order
  defaultColumnSizing?: Record<string, number>;  // Column widths in pixels
  defaultVisibleColumns?: string[];        // Visible column IDs (others hidden)
  defaultFilters?: FilterCondition[];      // Initial filter conditions
  defaultSorting?: SortConfig[];           // Initial sort configuration
  filterLogic?: 'and' | 'or';              // Filter combination logic
  pagination?: {
    pageSize: number;
    pageSizeOptions?: number[];
  };
}

🎯 Use Cases

• Enterprise dashboards and data visualization
• Admin panels and back-office tools
• Analytics interfaces with complex filtering
• Data exploration and reporting tools
• Any application needing Airtable/Baserow-like table UX

🤝 Contributing

Contributions are welcome! Please read our Contributing Guide (coming soon).

📄 License

MIT © Sertantai

🔗 Links

• GitHub Repository
• npm Package
• Issue Tracker

🙏 Acknowledgments

Built with:

• TanStack Table - Headless table library
• Svelte - Cybernetically enhanced web apps
• SvelteKit - The fastest way to build Svelte apps