How to detect memory leak in project?

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1

How to detect memory leak in project?

2

Depends on what the issue is, the best would be to debug by using console.log.

3

Which variable need I log for debug?

4

Well, that depends a lot. The best ways to detect a memory issue is just really using a logger that logs everything you do, for example:

myLogger.debug("script is starting")

myLogger.debug("Adding a message hook.");
bot.on("message", async msg => {
  myLogger.debug("Received message from %s", msg.author.tag);
  // do stuff with message.
  myLogger.debug("Handled message from %s", msg.author.tag);
});

I can recommend my own logging library:

5

sorry, but I don’t understand this module ;/

6

What is it that you don’t understand? I can try and help you.

Anyway, there are a two terms you should now:

Transport is an object that sends the message to some destination, for example the console or a file.
Logger is an object that takes a message and sends it to its transports.

And the way it works is;

  1. You create a logger: const myLogger = new Logger()
  2. You create transport(s): const myConsoleTransport = new LogConsoleTransport(data => Logger.getLevelName(data.level) + " " + data.message).
  3. You add the transport to the logger: myLogger.addTransport(myConsoleTransport)
  4. You start logging stuff: myLogger.debug("Hello World")
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