Function validateZoom

validateZoom(
zoom: number,
options?: ValidateZoomOptions,
): { valid: boolean; error: string | null }
Validates a zoom level against a range.

Defaults to [0, 20], both inclusive. NaN and the infinities are rejected explicitly, so a value that arithmetic produced rather than a user is caught here rather than downstream.
Parameters
- zoom: number
  The zoom level.
- options: ValidateZoomOptions = {}
  Range plus ValidatorOptions; min defaults to 0, max to 20.
Returns { valid: boolean; error: string | null }
{ valid, error }; error is null when valid.
Throws
GeoLeafError A ValidationError when out of range and throwOnError is set.
Example
```
GeoLeaf.Validators.validateZoom(12);
// Returns: { valid: true, error: null }

GeoLeaf.Validators.validateZoom(25);
// Returns: { valid: false, error: 'Zoom must be between 0 and 20' }

// Plage personnalisée
GeoLeaf.Validators.validateZoom(15, { min: 5, max: 18 });
// Returns: { valid: true, error: null }
```
- Defined in src/utils/validators/general-validators.ts:366