text: # flyd-forwardto
  
  Forward values from one stream into another existing stream.
  
  Create a new stream that passes all values through a function and forwards them
  to a target stream.
  
  __Graph__
  
  ```
  a:                       {1---2---3---}
  forwardTo(a, parseInt):  {--2---3---2-}
  flyd.map(square, a):     {1-4-4-9-9-4-}
  ```
  
  __Signature__
  
  `Stream b -> (a -> b) -> Stream a`
  
  __Example__
  
  ```javascript
  const forwardTo = require('flyd/module/forwardto')
  const R = require('ramda')
  
  // A stream of numbers
  const numbers = flyd.stream()
  // Another stream that squares the numbers
  const squaredNumbers = flyd.map(R.square, numbers)
  
  // A stream of numbers as strings
  // we want to convert them to ints and forward them into the numbers stream above:
  const stringNumbers = forwardTo(numbers, parseInt)
  
  stringNumbers('7')
  squaredNumbers() // -> 49
  numbers(4)
  squaredNumbers() // -> 16
  stringNumbers('9')
  squaredNumbers() // -> 81
  ```
  
  