Next.js, Open Source and Google: Next.js lead, Tim Neutkens

okay my next question is uh actually related to this uh big commerce corporation you mentioned like maybe not exactly to any particular vendor or e-commerce uh industry but it's about synergies uh i mean i guess that you know as next gs you got a lot of synergies with uh many different openness projects uh platforms services what other projects you cooperate most

with yeah so um we we work together with a bunch of other open source projects um some of which are used inside of xjs and some are like for research for purposes or uh like actually like collaboration on next shows itself one example is we work together with the google chrome team which have multiple people working on nexus uh to improve performance uh for vx applications um and they also like work on

like improving like bundle size for example uh improving uh like core web files the core rap files are these um like new measurements basically that google is going to use to rank uh different pages in our search engine um so there's basically three core rep files uh largest content for paint first contentful paint and cumulative layout shift um the first contentful paint is really

like how fast like users see something on the page when the page loads largest contentful pane is like when the large element in the viewport is rendered and then cumulative layout shift is basically i always say like it's it's this thing that you've all seen before which is you load a page you scroll down and suddenly like the whole page is shifting all the way around because like images load in images don't have sizes and then like you're reading something and suddenly the text is gone because it's

like shifted down to to another place in the page so they created this uh web file called cumulative layout shift to measure how much shifting is happening on a page when it loads uh and this can also be tracked inside of google chrome so that's really useful and it basically allows you to figure out like okay like i load this page now everything is shifting around in ways that you didn't intend basically

or at least like it's not as good as it could be so um yeah so the core web titles are like these three things that are going to be used to to index uh like pages basically like on like how good their performance is um and then then this is also like shown in lighthouse and like other tools as well uh we introduced nexus analytics recently which allows you to track these core web

files and get a reading from actual end users and then use that to improve the scores that you you had before basically it's like if you want to improve largest contentful paint you can keep tracking it for uh for a week or so uh inside nexus analytics or like even longer and then you can say like okay like largest contentful pain is really low let's try to improve that for like these pages that uh are really critical for like

like for example in e-commerce like if the largest contentful paint is really high like you're losing out on conversions basically because people are not going to scroll before a large context so it really helps with improving performance um and then like the nexus analytics can be used inside of like any um nexus application not even like if you're hosting only on for sale for example um so yeah that really helps there and