Problem with karma typescript

[xgrommx]

Hello everyone. After update to 3 version I got several errors

node_modules/socket.io-client/build/socket.d.ts(38,9): error TS1086: An accessor cannot be declared in an ambient context.
node_modules/socket.io-client/build/socket.d.ts(168,9): error TS1086: An accessor cannot be declared in an ambient context.

How can I fix it?

[darrachequesne]

Hi! Which version of typescript are you using? I can't reproduce with the example here: https://github.com/socketio/socket.io/tree/master/examples/typescript

(tested with typescript 4.0.5 and 3.6.5)

[MaximeMnt]

Same issue here @darrachequesne , i'm building an Angular app. I'm using the latest version of typescript: typescript@4.1.3

Angular CLI: 10.1.7
Node: 12.19.0
OS: win32 x64

Angular:
...
Ivy Workspace:

Package Version

@angular-devkit/architect 0.1001.7 (cli-only)
@angular-devkit/core 10.1.7 (cli-only)
@angular-devkit/schematics 10.1.7 (cli-only)
@schematics/angular 10.1.7 (cli-only)
@schematics/update 0.1001.7 (cli-only)

Error:

ERROR in node_modules/socket.io-client/build/socket.d.ts:39:9 - error TS1086: An accessor cannot be declared in an ambient context.

39     get active(): boolean;
           ~~~~~~
node_modules/socket.io-client/build/socket.d.ts:176:9 - error TS1086: An accessor cannot be declared in an ambient context.

176     get volatile(): Socket;
            ~~~~~~~~

[MaximeMnt]

I found a possible solution, Adding this line into the tsconfig.json file fixed the error!

"compilerOptions": {
    "skipLibCheck": true
}

[darrachequesne]

It seems to be linked to the issue here: microsoft/TypeScript#33939

I'm not sure if we can do something about it though...