function useControllableValue()

in packages/hooks/src/useControllableValue/index.ts [25:72]

• 40 lines of code
• 7 McCabe index (conditional complexity)

function useControllableValue<T = any>(
  props?: Props,
  options?: Options<T>,
): [T, (v: SetStateAction<T>, ...args: any[]) => void];
function useControllableValue<T = any>(defaultProps: Props, options: Options<T> = {}) {
  const props = defaultProps ?? {};

  const {
    defaultValue,
    defaultValuePropName = 'defaultValue',
    valuePropName = 'value',
    trigger = 'onChange',
  } = options;

  const value = props[valuePropName] as T;
  const isControlled = Object.prototype.hasOwnProperty.call(props, valuePropName);

  const initialValue = useMemo(() => {
    if (isControlled) {
      return value;
    }
    if (Object.prototype.hasOwnProperty.call(props, defaultValuePropName)) {
      return props[defaultValuePropName];
    }
    return defaultValue;
  }, []);

  const stateRef = useRef(initialValue);
  if (isControlled) {
    stateRef.current = value;
  }

  const update = useUpdate();

  function setState(v: SetStateAction<T>, ...args: any[]) {
    const r = isFunction(v) ? v(stateRef.current) : v;

    if (!isControlled) {
      stateRef.current = r;
      update();
    }
    if (props[trigger]) {
      props[trigger](r, ...args);
    }
  }

  return [stateRef.current, useMemoizedFn(setState)] as const;
}