What could be the reason why the initial console.log is failing to print?

Apologies for the oversight. The !== was a mistake that slipped past me before posting. Thank you for your understanding.

I am a beginner in Javascript.

I have written this function with winston:

function setlogger(log_level = "warn", logfile, screendump, format) { // defaults
    console.log("Format came into logger as: ", String(format), ". Converting..."); //777
    if (typeof format == 'undefined') {
        format = format.combine(
            format.colorize(),
            format.timestamp(),
                        format.align(),
                        format.printf(formatParams)
                    );
        console.log("Format is now:(1) ", String(format), ". "); //777
    }
    console.log("Format is now: (2)", String(format), ". "); //777 

When I invoke it, the (2) console.log() appears, but not the (1).

Format came into logger as: undefined . Converting...
Format is now: (2) undefined .

Why does this happen?

UPDATE: Disregard that. I've identified the issue.

Answer №1

Should the logger receive this message:

Received format as undefined. Converting...
, then the check ( typeof format !== 'undefined') will fail, preventing the log statement within that block from executing.

Your error seems to be rooted in the intended outcome of your actions. Perhaps providing a more detailed description of your goals would allow us to offer more effective assistance.

Answer №2

The initial console.log statement did not display due to the fact that the parameter you supplied as the format argument was undefined, causing it to fail the condition inside the if statement which mandated it to be anything other than undefined.

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