store/storages/memoryStorage.js

// memoryStorage is a useful last fallback to ensure that the store
// is functions (meaning store.get(), store.set(), etc will all function).
// However, stored values will not persist when the browser navigates to
// a new page or reloads the current page.

module.exports = {
	name: 'memoryStorage',
	read: read,
	write: write,
	each: each,
	remove: remove,
	clearAll: clearAll,
}

var memoryStorage = {}

function read(key) {
	return memoryStorage[key]
}

function write(key, data) {
	memoryStorage[key] = data
}

function each(callback) {
	for (var key in memoryStorage) {
		if (memoryStorage.hasOwnProperty(key)) {
			callback(memoryStorage[key], key)
		}
	}
}

function remove(key) {
	delete memoryStorage[key]
}

function clearAll(key) {
	memoryStorage = {}
}