How to specify a condition for a link in PUG?

Question

HTML

Good afternoon, please tell me how in PUG to make the href="index.html" attribute of the link appear only when there is a variable on the page - var pageClass = 'index-page', otherwise the link should not be href ?
I only managed to implement it this way, but it doesn’t quite suit me, it turns out extra repetitive code. Is there any way to reduce this code? Thanks in advance for your reply)

if pageClass !== 'index-page'
            a(href='index.html').main-nav__logo
        else
            a.main-nav__logo

Answer 1

a.main-nav__logo(href = pageClass == 'index-page' ? false : 'index.html')

If you plan to use it in several places, then put it in a mixin, of course.