mock_local_storage.js

export function storageMock() {
  let store = {}
  return {
    getItem: function(key) {
      return store[key] || null
    },
    setItem: function(key, value) {
      store[key] = value.toString()
    },
    removeItem: function(key) {
      delete store[key]
    },
    clear: function() {
      store = {}
    },
  }
};