How to correctly convert from if/else statement to ternary expression?

if we don’t have a number in ${desc}, we take extId and if doesn’t have extId, then it goes with empty string.
I tried to convert this:

        if (/^\d+$/.test(desc)) {
          console.log(desc);
        }
        if (!/^\d+$/.test(desc) && exlId != null) {
          console.log(extId);
        } else {
          console.log("");
        }

to this :

 /^\d+$/.test(desc)
            ? desc
            : ""
            ? !/^\d+$/.test(desc) && extId != null
            : ""

what I do wrong?

>Solution :

If I got your question correctly:

const log =  /^\d+$/.test(desc) ? desc : extId ? extId : "";
// Prints: -------------------------^-------------^-------^

or alternatively:

const log =  /^\d+$/.test(desc) && desc || extId && extId || "";

PS: fix also your typo: exlId !== extId