RangeProps.pushable should have type boolean | number

[jkkjonah]

Currently RangeProps prop pushable is typed as a boolean only. According to the documentation and source code it does support number values and should be updated accordingly

[schoenwaldnils]

This is my workaround until this is fixed:

const RangeWithFixedPushable = Range as React.ComponentClass<
  Omit<RangeProps, 'pushable'> & { pushable?: number | boolean }
>;