/* IMPORT */

import { OWNER } from '../objects/superroot'
import memo from '~/methods/memo'
import $ from '~/methods/observable'
import resolve from '~/methods/resolve'
import type { TryCatchFunction, ObservableReadonly, Resolved } from '~/types'

/* MAIN */

const tryCatch = <T, F>(value: T, fn: TryCatchFunction<F>): ObservableReadonly<Resolved<T | F>> => {

  const observable = $<Error>()

  return memo((stack) => {

    const error = observable()

    if (error) {

      const reset = () => observable(undefined)
      const options = { error, reset }

      return resolve(fn(options))

    } else {

      OWNER.errorHandler = observable

      return resolve(value)

    }

  })

}

/* EXPORT */

export default tryCatch