2020-05-26 18:17:24 +02:00

14 lines
282 B
JavaScript

"use strict"
var combine = require("./stream").combine
module.exports = function (reducer, seed, stream) {
var newStream = combine(function (s) {
return seed = reducer(seed, s._state.value)
}, [stream])
if (newStream._state.state === 0) newStream(seed)
return newStream
}