fix: koa dependencies are outdated

[loriswit]

Description

koa-router, koa-multer and kcors are not the recommended packages anymore.
They should be changed to @koa/router, @koa/multer and @koa/cors respectively.

Note that koa-router actually seems to be a mirror of @koa/router, so it might not really be an issue, but koa-multer has been marked as deprecated, and kcors hasn't been updated for 3 years.

Related issues: #428 #435 #534 #604

[attilaorosz]

Fixed in #948

[loriswit]

Fixed in #948

None of the issues I mentioned have been fixed in this PR. These packages are still outdated.

[attilaorosz]

My bad, I only saw outdated.

[loriswit]

I haven't tested it myself now, but I'm pretty sure that this requires some change to the source code as well, since these packages are being dynamically imported in some place. For instance:

routing-controllers/src/driver/koa/KoaDriver.ts

Line 49 in d43bf9a

const cors = require('kcors');

routing-controllers/src/driver/koa/KoaDriver.ts

Line 379 in d43bf9a

this.router = new (require('koa-router'))();

routing-controllers/src/driver/koa/KoaDriver.ts

Line 396 in d43bf9a

return require('koa-multer');

They are also referenced in the readme:

routing-controllers/README.md

Line 103 in 1390042

`npm install koa koa-router koa-bodyparser koa-multer`

[attilaorosz]

Indeed, that was an oversight from my end.

[github-actions]

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