As of today, on SFSE, there already exists tags viz., lightning-button, lightning:tab, etc. to name a few which are currently used in context of Lightning Components.

Now that Lightning Web Components will have the component names viz., lightning-button, lightning-tab, etc. is the plan to use these tags in context for both Lightning Components and Lightning Web Components?

With lightning-web-components already in place now, will that be sufficient enough to differentiate the context?

1 Answer 1


First, there's no significant difference between the two components (because they are all LWC under-the-hood anyways). That aside, we now have and , so this should definitely already be context sensitive. I see no reason to introduce a duplicate version of each, unless we start discovering major differences between the two (e.g. a bug that exists in LWC but not LAC).

I don't think this will happen, but we should monitor the situation for at least 3 months and come up with a decision then. I'm not sure we'll have an easy migration path anyways, because we can't have lightning:button versus lightning-button for these tags. I'm not sure these tags belong at all (but they already exist, so what's done is done). Normally, tags should be over rather major categories (e.g. soap-api or lightning-web-components); since specific tags tend to not get used and simply provide bloat.

  • On part of the tags, I would say it was foresightedness while creating those :)
    – Jayant Das
    Commented Dec 18, 2018 at 13:33

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