web-storage-express-cookies

Use cookies in express through the Storage interface of the Web Storage Api.

• Installation
• Usage

Installation

npm i cookie-parser web-storage-express-cookies

Usage

Make sure you load the cookieParser middleware first. After that create the storage in your own middleware.

import express from 'express';
import cookieParser from 'cookie-parser';

const app = express();
app.use(cookieParser());
app.use((req, res) => {
  // when we have set three items: fruit=banana,drink=coffee,food=hamburger
  const storage = new ExpressCookies({ req, res });
  console.log(storage.getItem('fruit')); // -> banana
  storage.setItem('girl', 'alice');
  // now the storage will contain: fruit=banana,drink=coffee,food=hamburger,girl=alice
  storage.removeItem('drink');
  // now the storage will contain: fruit=banana,food=hamburger,girl=alice
  storage.clear();
  // now the storage will be empty
});

An options object can be passed that will be used on setItem, removeItem and clear. For all possible values please see cookie

import express from 'express';
import cookieParser from 'cookie-parser';

const app = express();
app.use(cookieParser());
app.use((req, res) => {
  const storage = new ExpressCookies({ req, res, options: { httpOnly: true } });
});

A custom prefix can be passed to override the default one __cookie-storage__.

import express from 'express';
import cookieParser from 'cookie-parser';

const app = express();
app.use(cookieParser());
app.use((req, res) => {
  // all cookies will be stored with a `__custom-prefix__` prefix.
  const storage = new ExpressCookies({ req, res, prefix: '__custom-prefix__' });
});

To make sure Cookie is added to the Vary header everytime a cookie is read through the getItem or key methods setVaryHeader can be set to true, the default value is false.

import express from 'express';
import cookieParser from 'cookie-parser';

const app = express();
app.use(cookieParser());
app.use((req, res) => {
  const storage = new ExpressCookies({ req, res, setVaryHeader: true });
});