Conditionally perform or do not perform a wrapping if

Question

I need a little help. How can I write this code more properly?

function myFunc(performCheck = true) {
  if (performCheck) {
    if (b === a) {
      mySecondMethod();
    }
  } else {
    mySecondMethod();
  }
}

Answer 1

You could take a single expression and check if not the first part or the second.

function myFunc(performCheck = true) {
    if (!performCheck || b === a)) mySecondMethod();
}

Answer 2

if (!performCheck || b === a) { secondMethod() }