message: CoordinateMapper type tweaks
diff: @@ -63,15 +63,15 @@ namespace SymmetryOperator {
  readonly operator: SymmetryOperator,
  readonly invariantPosition: CoordinateMapper<T>,
  readonly position: CoordinateMapper<T>,
  - x(index: number): number,
  - y(index: number): number,
  - z(index: number): number,
  - r(index: number): number
  + x(index: T): number,
  + y(index: T): number,
  + z(index: T): number,
  + r(index: T): number
  }
  export interface Coordinates { x: ArrayLike<number>, y: ArrayLike<number>, z: ArrayLike<number> }
  - export function createMapping<T extends number>(operator: SymmetryOperator, coords: Coordinates, radius: ((index: number) => number) | undefined): ArrayMapping<T> {
  + export function createMapping<T extends number>(operator: SymmetryOperator, coords: Coordinates, radius: ((index: T) => number) | undefined): ArrayMapping<T> {
  const invariantPosition = SymmetryOperator.createCoordinateMapper(SymmetryOperator.Default, coords);
  const position = operator.isIdentity ? invariantPosition : SymmetryOperator.createCoordinateMapper(operator, coords);
  const { x, y, z } = createProjections(operator, coords);
  