How to use extrapolate parameters？

Thanks a lot, I have a question about Interpolate How to use the sysy, opi, sd parameters in the following description？

https://www.react-spring.io/docs/hooks/api value.interpolate either takes an object of the following shape:

extrapolateLeft extend Left extrapolate. Can be: identity/clamp/extend extrapolateRight extend Right extrapolate. Can be: identity/clamp/extend extrapolate extend Shortcut to set left and right-extrapolate range [0,1] Array of input ranges output undefined Array of mapped output ranges map undefined Value filter applied to input value