koa v2: ctx.status initially 404 rather than undefined.

[sdd]

The koa-v2 documentation states that:

By default, response.status is not set unlike node's res.statusCode which defaults to 200.

Yet, it appears to be initially set to 404. If I make a request to the following simple test server:

const app = new Koa();
app.use(ctx => console.log('status: ' + ctx.status));   // or ctx.response.status
const server = app.listen();

I get status: 404 on the console.

[PlasmaPower]

Yes, that's the case. I thought we already fixed the documentation. Oops.

[PlasmaPower]

See #705, but the resolution there is incorrect

[sdd]

Slightly a shame in my particular case as I wanted ctx.status to be initially undefined, but hey ho, I can live with it 😀

[PlasmaPower]

@sc0ttyd you might try ctx._explicitStatus && ctx.status || undefined, but it's undocumented so it might break.