Koa-session-ts NPM

koa-session-ts

Generic session middleware for koa, easy use with custom stores such as redis or mongo, supports defer session getter.

This middleware will only set a cookie when a session is manually set. Each time the session is modified (and only when the session is modified), it will reset the cookie and session.

You can use the rolling sessions that will reset the cookie and session for every request which touch the session. Save behavior can be overridden per request.

Install

npm install koa-session-ts --save

Usage

import * as Koa from "koa";
import session from "koa-session-ts";

const app = new Koa();
app.use(session());

app.use(async ctx => {
  // the parsed body will store in ctx.request.body
  // if nothing was parsed, body will be an empty object {}
  console.log(ctx.session);
  console.log(ctx.sessionId);
  console.log(ctx.sessionSave);
  console.log(ctx.sessionStore);
  ctx.regenerateSession();
});

Options

key cookie name, defaulting to koa.sid
store session store instance, default is a MemoryStore
reconnectTimeout store reconnectTimeout in ms, default is oneday

cookieOptions session cookie settings, default is

{
    httpOnly: true,
    maxAge: 86400000, // one day in ms
    overwrite: true,
    path: '/',
    secure: false,
    signed: false,
}

defer defer get session, you should await this.session to get the session if defer is true, default is false
rolling rolling session, always reset the cookie and sessions, default is false
allowEmpty allow session empty, default is false
genSid you can use your own generator for sid
errorHanlder handler for session store get or set error
valid valid(ctx, session), valid session value before use it
beforeSave beforeSave(ctx, session), hook before save session

Session Store

You can use any other store to replace the default MemoryStore, it just needs to inherient the BaseStore and implement the following APIs:

get(sid: string): get session object by sid
set(sid: string, sess: Session, ttl?: number): set session object for sid, with a ttl (in ms)
destroy(sid: string): destroy session for sid

the api needs to return a Promise, Thunk or generator. And use these events to report the store's status.