Install it globally because that's what you want, really:

npm install --g surpris.io

There are two functions, surprise and kulho. Kulho is google translated into germany and is like Either, sometimes.

Usage, kulho:

> const R = require('ramda')
undefined
> const S = require('surpris.io')
undefined
> const adder = S.kulho(R.map(i => i + 1))
undefined
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ [ 2, 3, 4 ],
'Es gibt nur eine Sache, die einen Traum unmöglich macht: die Angst vor dem Scheitern.' ]

Usage, surprise

> const S = require('surpris.io')
undefined
> const R = require('ramda')
undefined
> const adder = S.surprise(R.map(i => i + 1))
undefined
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
{ surprise: 'motherfucker!' }

Usage, both!

> const R = require('ramda')
undefined
> const S = require('surpris.io')
undefined
> const adder = S.kulho(S.surprise(R.map(i => i + 1)))
undefined
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
{ surprise: 'motherfucker!' }
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ 2, 3, 4 ]
> adder([1,2,3])
[ [ 2, 3, 4 ],
'Denken Sie daran, dass, wo immer Ihr Herz ist, dort finden Sie Ihren Schatz.' ]

Have fun!