@mui/system/modern/cssVars/localStorageManager.js

MUI System is a set of CSS utilities to help you build custom designs more efficiently. It makes it possible to rapidly lay out custom designs.

function noop() {}
const localStorageManager = ({
  key,
  storageWindow
}) => {
  if (!storageWindow && typeof window !== 'undefined') {
    storageWindow = window;
  }
  return {
    get(defaultValue) {
      if (typeof window === 'undefined') {
        return undefined;
      }
      if (!storageWindow) {
        return defaultValue;
      }
      let value;
      try {
        value = storageWindow.localStorage.getItem(key);
      } catch {
        // Unsupported
      }
      return value || defaultValue;
    },
    set: value => {
      if (storageWindow) {
        try {
          storageWindow.localStorage.setItem(key, value);
        } catch {
          // Unsupported
        }
      }
    },
    subscribe: handler => {
      if (!storageWindow) {
        return noop;
      }
      const listener = event => {
        const value = event.newValue;
        if (event.key === key) {
          handler(value);
        }
      };
      storageWindow.addEventListener('storage', listener);
      return () => {
        storageWindow.removeEventListener('storage', listener);
      };
    }
  };
};
export default localStorageManager;