Function is2D

is2D(s: AnyShape<Dimension>): s is AnyShape<"2D">
Narrow an unknown-dimension shape to 2D.

Note: Currently no production code path creates 2D-marked shapes. This guard is provided for forward compatibility with future 2D API work.
Parameters
- s: AnyShape<Dimension>
Returns s is AnyShape<"2D">
- Defined in src/core/dimensionTypes.ts:45