Type 'ListenEvents' does not satisfy the constraint 'EventsMap'. node_modules/socket.io/dist/namespace.d.ts

[marc-wittwer]

Describe the bug
I get the following error when I run npm run build in my node.js express application.

 npm run build

> [email protected] build
> tsc -p .

node_modules/socket.io/dist/namespace.d.ts:14:133 - error TS2344: Type 'ListenEvents' does not satisfy the constraint 'EventsMap'.

14 export interface ServerReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> extends NamespaceReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> {
                                                                                                                                       ~~~~~~~~~~~~

  node_modules/socket.io/dist/namespace.d.ts:14:42
    14 export interface ServerReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> extends NamespaceReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> {
                                                ~~~~~~~~~~~~
    This type parameter might need an `extends EventsMap` constraint.

node_modules/socket.io/dist/namespace.d.ts:15:42 - error TS2344: Type 'ListenEvents' does not satisfy the constraint 'EventsMap'.

15     new_namespace: (namespace: Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData>) => void;
                                            ~~~~~~~~~~~~

  node_modules/socket.io/dist/namespace.d.ts:14:42
    14 export interface ServerReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> extends NamespaceReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> {
                                                ~~~~~~~~~~~~
    This type parameter might need an `extends EventsMap` constraint.


Found 2 errors in the same file, starting at: node_modules/socket.io/dist/namespace.d.ts:14

My system:
Node v17.9.1 (npm v8.11.0)
Ubuntu 20.04
socket.io: "^4.5.1",

[marc-wittwer]

#4431 or #4445
This might fix it.

[shhdharmen]

For time being, I used commonJS pattern of require and it's building fine:

const { Server } = require("socket.io");

[darrachequesne]

This should be fixed by #4431, included in version 4.5.2.

Thanks for reporting this issue 👍