Callbag operator that applies a transformation on data passing through it. Works on either pullable or listenable sources.
npm install callbag-map
const fromIter = require('callbag-from-iter');
const iterate = require('callbag-iterate');
const map = require('callbag-map');
const source = map(x => x * 0.1)(fromIter([10,20,30,40]));
iterate(x => console.log(x))(source); // 1
// 2
// 3
// 4