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Forked from mpj/monad-stream-example.js
Created February 13, 2019 18:06
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This is the code from Monads - episode #21 of FunFunFunction (https://www.youtube.com/playlist?list=PL0zVEGEvSaeFSwPn06GKArptSxiP1Gff8)
const fetch = require('node-fetch')
const Bacon = require('baconjs')
function getInPortuguese(word) {
// Google Translate API is a paid (but dirt cheap) service. This is my key
// and will be disabled by the time the video is out. To generate your own,
// go here: https://cloud.google.com/translate/v2/getting_started
const apiKey =
'AIzaSyB4DyRHIsNhogQXmH16YKbZfR-lTXrQpq0'
const url =
'https://www.googleapis.com' +
'/language/translate/v2' +
'?key=' + apiKey +
'&source=en' +
'&target=pt' +
'&q=' + encodeURIComponent(word)
const promise = fetch(url)
.then(response => response.json())
.then(parsedResponse =>
parsedResponse
.data
.translations[0]
.translatedText
)
const stream = Bacon.fromPromise(promise)
return stream
}
const stream = new Bacon.Bus()
stream
.flatMap(word => getInPortuguese(word))
.map(word => word.toUpperCase())
.onValue(word => console.log(word))
stream.push('cat')
stream.push('meal')
stream.push('trumpet')
// Output of running this file will be:
// TROMBETA
// REFEIÇÃO
// GATO
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