Function pendingThenable

packages/query-core/src/thenable.ts:44–84

()

  | PendingThenable<T>

export function pendingThenable<T>(): PendingThenable<T> {
  let resolve: Pending<T>['resolve']
  let reject: Pending<T>['reject']
  // this could use `Promise.withResolvers()` in the future
  const thenable = new Promise((_resolve, _reject) => {
    resolve = _resolve
    reject = _reject
  }) as PendingThenable<T>

  thenable.status = 'pending'
  thenable.catch(() => {
    // prevent unhandled rejection errors
  })

  function finalize(data: Fulfilled<T> | Rejected) {
    Object.assign(thenable, data)

    // clear pending props props to avoid calling them twice
    delete (thenable as Partial<PendingThenable<T>>).resolve
    delete (thenable as Partial<PendingThenable<T>>).reject
  }

  thenable.resolve = (value) => {
    finalize({
      status: 'fulfilled',
      value,
    })

    resolve(value)
  }
  thenable.reject = (reason) => {
    finalize({
      status: 'rejected',
      reason,
    })

    reject(reason)
  }

  return thenable
}

/**
 * This function takes a Promise-like input and detects whether the data