Since engine.io@6.6.5, the generated .d.ts files import types from "ws"
(WebSocket, PerMessageDeflateOptions), but @types/ws was not declared as
a dependency. This causes TypeScript compilation errors for consumers
who do not have @types/ws installed.
This follows the existing pattern where @types/cors and @types/node are
already listed as dependencies.
Related: https://github.com/socketio/socket.io/issues/5437
The uServer (uWebSockets.js) implementation did not emit
"initial_headers" and "headers" events during WebSocket upgrades,
unlike the regular Server which does this via the ws "headers" event.
Related: https://github.com/socketio/socket.io/issues/5300
This reverts commit 7427109658.
The new version of the `cookie` package contains code with optional chaining (`?.`), which is not supported by older Node.js versions (< 14).
The types for cookie are now bundled, so that there is no conflict with the types coming from `cookie@1`:
> error TS2724: '"cookie"' has no exported member named 'CookieSerializeOptions'. Did you mean 'SerializeOptions'?
>
> import type { CookieSerializeOptions } from "cookie";
> ~~~~~~~~~~~~~~~~~~~~~~
Related: https://github.com/socketio/socket.io/issues/5283
In some specific cases, the transport was not closed right away,
leaving the Node.js process alive even after closing the server.
The HTTP long-polling transport would be closed after the heartbeat
failure and the `closeTimeout` delay (20 + 25 + 30 seconds).
Example:
```js
io.on("connection", (socket) => {
// the writeBuffer is not empty, so the transport is not closed right away
io.close();
});
```
Related: https://github.com/socketio/socket.io/issues/5088
In order to address the following warning when publishing:
> npm warn publish npm auto-corrected some errors in your package.json when publishing. Please run "npm pkg fix" to address these errors.
> npm warn publish errors corrected:
> npm warn publish "repository.url" was normalized to "git+https://github.com/socketio/socket.io.git"
Note: the owner of the `socket.io` repository was updated to Automattic
in [1], though it was never applied to the other repositories nor
mentioned in the client bundles.
[1]: 340281152f
