Function checkExpectation

src/wait-for.ts:155–189

()

    }

    function checkExpectation() {
      /* istanbul ignore next */
      if (promiseStatus === 'pending') {
        return;
      }

      try {
        const result = expectation();

        // @ts-expect-error result can be a promise
        if (typeof result?.then === 'function') {
          const promiseResult: Promise<T> = result as unknown as Promise<T>;
          promiseStatus = 'pending';
          // eslint-disable-next-line promise/catch-or-return, promise/prefer-await-to-then
          promiseResult.then(
            (resolvedValue) => {
              promiseStatus = 'resolved';
              onDone({ type: 'result', result: resolvedValue });
              return;
            },
            (rejectedValue) => {
              promiseStatus = 'rejected';
              lastError = rejectedValue;
              return;
            },
          );
        } else {
          onDone({ type: 'result', result: result });
        }
        // If `callback` throws, wait for the next mutation, interval, or timeout.
      } catch (error) {
        // Save the most recent callback error to reject the promise with it in the event of a timeout
        lastError = error;
      }
    }

    function handleTimeout() {
      let error: Error;