'Nestjs how to change socket.io message data

If the message data is not null, I can edit value like this:

context.switchToWs().getData().custom = true

But, how to change it, if the message data is null?

node.js socket.io nestjs

Solution 1:^[1]

Try please this way:

const data = context.switchToWs().getData();

data = {
  ...data,
  custom: true
}

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Solution	Source
Solution 1	Oro