Simple state layer middleware for Koa 2. As mentionned in official koajs:
ctx.state The recommended namespace for passing information through middleware and to your frontend views.
npm install --save koa-state
const Koa = require('Koa');
const koaState = require('koa-state');
const app = new Koa();
app.use(koaState());
app.use(async (ctx, next) => {
if (!ctx.hasState('my-key-state')) {
ctx.setState('my-key-state', 'anything-as-value');
}
await next();
});
app.use(async (ctx, next) => {
console.log(ctx.getState('my-key-state'));
await next();
});
app.listen(3000);
You can customize the context key with app.use(koaState('contextKey'));
MIT