Retry in watt, each retry adds a new stack frame

recurse.js

const watt = require("watt")

const send = watt(function* (next) {
  try {
    // oh noes, an err occurred
    throw new Error('Unexpected things')
  } catch (err) {
    // Wait for a bit before retry
    yield setTimeout(next)
    return send()
  }
  return 42
})

// Eventually...
// FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
send((err, res) => console.log(err, res))

// No tail call recursion optimisation :(
// How to do this with generators?