If you're a fan of promises and named arguments, this package is for you. It is
like join but with named arguments
rather than relying on order.
// npm install usingps
// const join = require('usingps')
import using from 'https://esm.sh/usingps@1.0.1'
const a = Promise.resolve(1)
const b = Promise.resolve(2)
const c = Promise.resolve(4)
using({a, b, c}, ({a, c}) => console.log(a + c), console.error)
// 5Implementing a Promise.props:
Promise.props = (u) => using(u, (r) => r)