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How to use with pkg

The client files are not automatically included as assets, you need to manually specify them:

index.js

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

const io = new Server();

io.on("connection", (socket) => {
// ...
});

io.listen(3000);
caution

ES modules are not currently supported. More information here: https://github.com/vercel/pkg/issues/1291

pkg.json

{
"assets": "node_modules/socket.io/client-dist/*.js"
}

And then run:

$ pkg -c pkg.json -t node14-linux index.js

And voilà!