fix: cast xScale.invert result to number in useSpatialIndex

[rbeucher]

Hi @lewisjared

I am getting this error when trying to build the docker image:

TYPESCRIPT BUILD ERROR IN USESPATIALINDEX.TS
0.141 > frontend@0.0.0 build
0.141 > tsc -b && vite build
0.141
4.476 src/components/execution/values/series/useSpatialIndex.ts(160,35): error TS2363: The right-hand side [+] up 0/1hmetic operation must be of type 'any', 'number', 'bigint' or an enum type.
⠏ Image local/ref-app:latest Building 11.9s
Dockerfile:39

The issue is that xScale.invert() returns number | Date (since XScaleType is ScaleLinear | ScaleTime), so the arithmetic fails. The fix is to cast it to number.

      // Find the closest data index by X pixel position
      const xVal = xScale.invert(pixelX) as number;

ScaleTime.invert() returns Date while ScaleLinear.invert() returns a number, making xVal typed as number | Date. The cast to number is safe here since the spatial index only works with numeric chart data.

[netlify]

👷 Deploy request for climate-ref pending review.

Visit the deploys page to approve it

Name	Link
🔨 Latest commit	dbffdd6