Don't understand where to write this code.

[muted delta]

Please explain where need to write this code. I have re-read the documentation on this code more than a dozen times and still did not understand. When I try to write this code in files that are responsible for events, I get an error:

node:events:497
 throw er; // Unhandled 'error' event
 ^

ReferenceError: client is not defined

A similar error occurred when trying to insert this code into the command itself.

[stoic carbon]

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[nocturne sedge]

you should start with https://discordjs.guide/ from the beginning

[void silo]

Do you copy and paste the whole code block? You shouldn't. It's just an example. The part it talks about is highlighted

[muted delta]

Thanks for the clarification. A strange example that doesn't work, but it's important to me as a beginner

[void silo]

Well, it requires the client to be defined in the scope, which it expects to be done already, as it's just an example code