jtricerolph 18e24efbeb Add sync error logging, extend error flash, fix unload saves

- Log workforce sync errors to backend stdout so they appear in docker logs
- Extend error flash from 5s to 15s so errors are readable
- Replace sendBeacon (POST-only) with keepalive fetch (PUT) on unload —
  sendBeacon was hitting 404s on all three unload saves

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-07-22 14:19:38 +00:00

2 KiB

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universalify

Make a callback- or promise-based function support both promises and callbacks.

Uses the native promise implementation.

Installation

npm install universalify

API

`universalify.fromCallback(fn)`

Takes a callback-based function to universalify, and returns the universalified function.

Function must take a callback as the last parameter that will be called with the signature (error, result). universalify does not support calling the callback with three or more arguments, and does not ensure that the callback is only called once.

function callbackFn (n, cb) {
  setTimeout(() => cb(null, n), 15)
}

const fn = universalify.fromCallback(callbackFn)

// Works with Promises:
fn('Hello World!')
.then(result => console.log(result)) // -> Hello World!
.catch(error => console.error(error))

// Works with Callbacks:
fn('Hi!', (error, result) => {
  if (error) return console.error(error)
  console.log(result)
  // -> Hi!
})

`universalify.fromPromise(fn)`

Takes a promise-based function to universalify, and returns the universalified function.

Function must return a valid JS promise. universalify does not ensure that a valid promise is returned.

function promiseFn (n) {
  return new Promise(resolve => {
    setTimeout(() => resolve(n), 15)
  })
}

const fn = universalify.fromPromise(promiseFn)

// Works with Promises:
fn('Hello World!')
.then(result => console.log(result)) // -> Hello World!
.catch(error => console.error(error))

// Works with Callbacks:
fn('Hi!', (error, result) => {
  if (error) return console.error(error)
  console.log(result)
  // -> Hi!
})

License

MIT

2 KiB Raw Blame History