if value is true return function

loadingStringIfCompleted.js

import {curry} from "ramda";
// Take a function and a value, return the function with the applied value if the value is evaluated as true
const falseOr = curry((fn, value) => value && fn(value));
// Return a string that indicates loading
const loadingString = () => '…';
// Return the loading string but only if the input evaluates to true
const loadingStringIf = falseOr(loadingString);