monad.js

import * as R from "ramda";

const log = R.tap(R.bind(console.log, console));

// F1 :: float -> float
const f1 = f => f * 1.23;
// F2 :: float -> float
const f2 = f => f * 1.345;
// F3 :: float -> float
const f3 = R.compose(
  f1,
  f2
);

R.tap(
  R.pipe(
    f1,
    log,
    f2,
    log,
    f3,
    log
  )(10)
);