Storage

The type checked localStorage API you might have always been looking for.

What this library does

The land of localStorage polyfill and replacements is a crowded place. Most of these are fantastic libraries, but none satisfied all the requirements that I wanted.

1. Typechecked
2. Fully Compatible Storage API. (many are missing keys and length)
3. Ability to differentiate between sessionStorage and localStorage
4. Tested
5. Works on Safari incognito mode.

Along the way I also noticed that polyfills for document.cookie were missing a few key features for cookies, such as cookies in the past not being removed.

This library is far from perfect, but it meets all the criteria I need.

Installation & Usage

Installing through npm is done as one would normally expect:

$ npm install --save @urbandoor/storage

Usage in webpack/typescript works as follows:

import Storage from '@urbandoor/storage';

const storage = new Storage();

storage.setItem('potato', 'true');
storage.getItem('potato'); // 'true'
storage.length; // 1
storage.keys(0); // potato
storage.removeItem('potato');
storage.setItem('potato1', 'true');
storage.setItem('potato2', 'true');
storage.setItem('potato3', 'true');
storage.setItem('potato4', 'true');
storage.clear();
storage.getItem('potato1'); // null

Features not implemented yet

1. IE user data.
2. Typescript typecheck-ed wrapper that handles parsing.
3. Probably a lot of things.