@basic-streams/chain

``typescript
chain(fn: (x: T) => Stream, stream: Stream): Stream
`

Creates a stream containing all values from all streams created by applying the
given function fn to each value in the given stream.

`js
import ofMany from "@basic-streams/of-many"
import chain from "@basic-streams/chain"

const stream = ofMany([1, 2], 10000)
const fn = x => ofMany([x, x, x], 7000)

const result = chain(fn, stream)

result(x => {
console.log(x)
})

// > 1
// > 1
// > 2
// > 1
// > 2
// > 2

// stream: _________1_________2
// fn(1): ______1______1______1
// fn(2): ______2______2______2
// result: ________________1______1__2___1__2______2
``