This RFC proposes a comprehensive rewrite of react-grid-layout in TypeScript
with a modernized, composable API while maintaining backwards compatibility.

Key changes:
- Pure TypeScript core with no React dependencies in layout algorithms
- Composable interfaces: Compactor, PositionStrategy, DragConfig, ResizeConfig, DropConfig
- Hooks-based API (useGridLayout, useResponsiveLayout, useContainerWidth)
- Fast compaction algorithm (O(n log n) vs O(n²)) - PR #2152
- Drag threshold fix (onDragStart only fires after 3px movement) - PR #1411
- Wrap compact mode support via Compactor interface - PR #1773
- Legacy wrapper for 100% backwards compatibility
- data-grid prop isolated to legacy wrapper only

Breaking changes in v2:
1. onDragStart requires mouse movement (3px threshold)
2. Immutable callback parameters
3. data-grid prop only in legacy wrapper
4. Fast compaction algorithm by default (use legacy* for exact v1 behavior)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Implements wrap mode compaction where items flow left-to-right and wrap
to the next row, similar to words in a paragraph. When dragging:
- Moving an item earlier shifts other items right/down
- Moving an item later shifts other items left/up

This is a v2 reimplementation of the algorithm from PR #1773 by
@JohnThomson, adapted to the new composable Compactor interface.

Usage:
```tsx
import { wrapCompactor } from 'react-grid-layout/extras';
<GridLayout compactor={wrapCompactor} ... />
```

* feat(extras): add wrap compactor for paragraph-style layouts

Implements wrap mode compaction where items flow left-to-right and wrap
to the next row, similar to words in a paragraph. When dragging:
- Moving an item earlier shifts other items right/down
- Moving an item later shifts other items left/up

This is a v2 reimplementation of the algorithm from PR #1773 by
@JohnThomson, adapted to the new composable Compactor interface.

Usage:
```tsx
import { wrapCompactor } from 'react-grid-layout/extras';
<GridLayout compactor={wrapCompactor} ... />
```

* fix(readme): correct attribution for PR #2175

Change credit from @nicosayer to @dmj900501 who is the actual author
of the GridBackground feature PR.