Function useAsync

packages/react-select/src/useAsync.ts:45–202

({
  defaultOptions: propsDefaultOptions = false,
  cacheOptions = false,
  loadOptions: propsLoadOptions,
  options: propsOptions,
  isLoading: propsIsLoading = false,
  onInputChange: propsOnInputChange,
  filterOption = null,
  ...restSelectProps
}: AsyncProps<Option, IsMulti, Group> & AdditionalProps)

  AsyncAdditionalProps<Option, Group>;

export default function useAsync<
  Option,
  IsMulti extends boolean,
  Group extends GroupBase<Option>,
  AdditionalProps
>({
  defaultOptions: propsDefaultOptions = false,
  cacheOptions = false,
  loadOptions: propsLoadOptions,
  options: propsOptions,
  isLoading: propsIsLoading = false,
  onInputChange: propsOnInputChange,
  filterOption = null,
  ...restSelectProps
}: AsyncProps<Option, IsMulti, Group> & AdditionalProps): StateManagerProps<
  Option,
  IsMulti,
  Group
> &
  Omit<
    AdditionalProps,
    keyof AsyncAdditionalProps<Option, Group> | AsyncManagedPropKeys
  > {
  const { inputValue: propsInputValue } = restSelectProps;

  const lastRequest = useRef<unknown>(undefined);
  const mounted = useRef(false);

  const [defaultOptions, setDefaultOptions] = useState<
    OptionsOrGroups<Option, Group> | boolean | undefined
  >(Array.isArray(propsDefaultOptions) ? propsDefaultOptions : undefined);
  const [stateInputValue, setStateInputValue] = useState<string>(
    typeof propsInputValue !== 'undefined' ? (propsInputValue as string) : ''
  );
  const [isLoading, setIsLoading] = useState(propsDefaultOptions === true);
  const [loadedInputValue, setLoadedInputValue] =
    useState<string | undefined>(undefined);
  const [loadedOptions, setLoadedOptions] = useState<
    OptionsOrGroups<Option, Group>
  >([]);
  const [passEmptyOptions, setPassEmptyOptions] = useState(false);
  const [optionsCache, setOptionsCache] = useState<
    Record<string, OptionsOrGroups<Option, Group>>
  >({});
  const [prevDefaultOptions, setPrevDefaultOptions] =
    useState<OptionsOrGroups<Option, Group> | boolean | undefined>(undefined);
  const [prevCacheOptions, setPrevCacheOptions] = useState(undefined);

  if (cacheOptions !== prevCacheOptions) {
    setOptionsCache({});
    setPrevCacheOptions(cacheOptions);
  }

  if (propsDefaultOptions !== prevDefaultOptions) {
    setDefaultOptions(
      Array.isArray(propsDefaultOptions) ? propsDefaultOptions : undefined
    );
    setPrevDefaultOptions(propsDefaultOptions);