Invalid values and the nullish coalescing operator in JavaScript
fredrikmalmo.com
After working as a JS/TS developer for quite some years I've grown quite used to seeing || "" or ?? "" strewn around codebases as a quick fix to "remove" nullability, usually due to some value which you assume is set, but can't "prove" type-wise. I think this is a code smell, and I generally think it's not the right solution. In this post I try to explain why I don't think so, and provide some patterns that could help combat the downsides introduced by this pattern.
  • cecilkorik@piefed.caEnglish
    1·
    10 hours ago

    Here I’ll fix it:

    user?.name ?? "ERROR: the user is invalid"

    Why yes, my son, little Bobby Tables we call him, is on a playdate with his best friend ERROR right now, why do you ask?

  • velindora@lemmy.cafeEnglish
    2·
    12 hours ago

    My philosophy here is that we should attempt to avoid implementing code which could lead to invalid UI states.

    Mfer never heard of scope creep, deadlines, and not giving a fuck.