portainer/app/react-tools/apply-set-state-action.ts

import { SetStateAction } from 'react';

export function applySetStateAction<T>(applier: SetStateAction<T>, values?: T) {
  if (isFunction(applier)) {
    return values ? applier(values) : undefined;
  }
  return applier;

  function isFunction(value: unknown): value is (prevState: T) => T {
    return typeof value === 'function';
  }
}