1. isMenuVisible.ts

const KEY = 'isMenuVisible';

const getIsMenuVisible = () => {
  const json = window.localStorage.getItem(KEY);
  if (json) {
    try {
      const value = JSON.parse(json);
      if (typeof value === 'boolean') {
        return value;
      }
    } catch (_) {}
  }
  return false;
};

2. isMenuVisible.ts

import * as Option from 'fp-ts/es6/Option';
import { pipe } from 'fp-ts/es6/pipeable';
import { constant } from 'fp-ts/es6/function';

const isBoolean = (value: unknown): value is boolean =>
  typeof value === 'boolean';

const KEY = 'isMenuVisible';

const getIsMenuVisible = () =>
  pipe(
    window.localStorage.getItem(KEY),
    Option.fromNullable,
    Option.chain(value => Option.tryCatch(() => JSON.parse(value))),
    Option.chain(Option.fromPredicate(isBoolean)),
    Option.getOrElse(constant(false))
  );