Whats New in Svelte Flow 0.1.20

Patch Changes

• #4670  Fix initial fitView not working correctly for nodeOrigin other than [0,0]

• #4670  Improve fitView to respect clamped node positions based on nodeExtent

• #4653  Calculate viewport dimensions in fitView instead of using stored dimensions. Fixes #4652 

• #4681  Fix crash when deleting nodes while dragging. Closes #4677