function forEach(flatCoordinates, offset, end, stride, callback) {
  let ret;
  offset += stride;
  for (; offset < end; offset += stride) {
    ret = callback(
      flatCoordinates.slice(offset - stride, offset),
      flatCoordinates.slice(offset, offset + stride),
    );
    if (ret) {
      return ret;
    }
  }
  return false;
}
This function calls `callback` for each segment of the flat coordinates
array. If the callback returns a truthy value the function returns that
value immediately. Otherwise the function returns `false`.
@param {Array<number>} flatCoordinates Flat coordinates.
@param {number} offset Offset.
@param {number} end End.
@param {number} stride Stride.
@param {function(import("../../coordinate.js").Coordinate, import("../../coordinate.js").Coordinate): T} callback Function
    called for each segment.
@return {T|boolean} Value.
@template T