வடிவமைப்பிலேயே நம்பகமானது

useDraft.set('A');
const first = useDraft.save(); // writes "A"
useDraft.set('B');
const second = useDraft.save(); // waits in the queue
useDraft.set('C');
const third = useDraft.save(); // joins the waiting save

await Promise.all([first, second, third]); // ['A', 'C', 'C'] — two writes

try {
  await restateManager.ready;
} catch (error) {
  // BULK_OPERATION_FAILED: one entry per store that could not load.
  for (const { store, error: cause } of error.failures) {
    console.error(store.key, cause.code);
  }
}

function Document({ onClose }) {
  const useDraft = useRestateScope((scope) => persistedRestate('', { scope, key: 'draft' }));

  const saveAndClose = () => {
    useDraft.save(); // finishes even after this component unmounts
    onClose();
  };
  // …
}

const { available } = useDraft.status();

if (!available) {
  // Server rendering or blocked browser storage: the store works in memory
  // and save() rejects with STORAGE_UNAVAILABLE.
  showNotice('Changes are kept until you close this tab.');
}

import { persistedRestate } from '@kkwaenggwari/restate';

const useSettings = persistedRestate(
  { theme: 'system' },
  {
    key: 'settings',
    version: 2,
    migrate(value, from, to) {
      if (from === 1 && to === 2 && typeof value?.darkMode === 'boolean') {
        return { theme: value.darkMode ? 'dark' : 'light' };
      }
      throw new Error('Unsupported stored version');
    },
    validate: (value) => ['system', 'light', 'dark'].includes(value?.theme),
  },
);

import { persistedRestate } from '@kkwaenggwari/restate';

const sessionStorageAdapter = {
  isAvailable: () => typeof sessionStorage !== 'undefined',
  getItem: (key) => sessionStorage.getItem(key),
  setItem: (key, value) => sessionStorage.setItem(key, value),
  removeItem: (key) => sessionStorage.removeItem(key),
};

export const useFilters = persistedRestate(
  { query: '' },
  {
    key: 'filters',
    storage: sessionStorageAdapter,
  },
);

persistedRestate(value, {
  key: 'draft',
  operationTimeoutMs: 10_000, // default 30000
  maxPendingOperations: 64, // default 256
  maxStorageCharacters: 1_000_000,
});