Function expandPanel

expandPanel(
    sizes: readonly number[],
    index: number,
    targetSize: number,
): readonly number[]
Expand a collapsed panel.
Parameters
- sizes: readonly number[]
  Current sizes
- index: number
  Panel index to expand
- targetSize: number
  Target size to expand to
Returns readonly number[]
Updated sizes with expanded panel
- Defined in core/src/widgets/splitPane.ts:286