Function unionExtentEndFromNumber

src/util/model.ts:1248–1252

(extent: number[], val: number | NullUndefined)

 *  - `extent` should be initialized as `initExtentForUnion()`.
 */
export function unionExtentEndFromNumber(extent: number[], val: number | NullUndefined): void {
    if (isValidNumberForExtent(val) && val > extent[1]) {
        extent[1] = val;
    }
}

/**
 * NOTICE: