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Anti-Vibe Coding = Pair Programming with Top Models | Sam Witteveen | YouTubeToText
YouTube Transcript: Anti-Vibe Coding = Pair Programming with Top Models
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Summary
Core Theme
JetBrains's Juni is presented as an "anti-vibe coding" AI agent that integrates deeply into their specialized IDEs, acting as a collaborative pair-programming partner for professional developers rather than a standalone code generator.
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Okay, so there are many vibe coding apps
out there, but they have a lot of major
flaws. In this video, I want to show a
tool which is like the anti- vibe coding
tool. So, this tool comes from Jet
Brains, and they've kindly agreed to
sponsor a video going through how this
works and some of the best practices you
should think about if you're a
professional coder looking to use AI to
enhance your coding as opposed to
someone who doesn't know how to code and
is basically just constantly making
things from scratch. So, if you are a
software engineer and certainly if
you've worked at a big company, you've
probably come across Jet Brains. They
make ideas for a whole bunch of
different languages and frameworks as
you can see here. Probably the biggest
one people would know them for would be
IntelliJ IDEA, but they also have things
like PyCharm, which has been around for
many years and also things like PHP
Storm, Web Storm, and Ruby Mine. So, the
thing that sets these IDs apart from
generic IDEs that are out there is that
they're heavily customized to that
specific language and that specific
framework. And that combined with the
models from Anthropic and models like
Gemini 3 allow them to build something
that's really unique. And this brings us
to Juni Jet Brains's smart coding agent.
And the idea here is that this is not a
separate product that sort of stands
alone. This is something that creates a
scaffold to work in any of their IDE.
So Juny goes beyond just being a sort of
plugin for the ID. it's fundamentally
baked in not only with that IDE but with
all the special features that IDE has
for the particular language or framework
that you're working with. So just as
their IDEs are set up for the various
languages and frameworks in there, Juny
is able to be specialized for those
particular languages and frameworks as
well. So you can think of it as if your
project is a Android app and you're
working in Intelligj. The scaffold and
the structure of the agent are actually
set up for that particular architecture.
And in many ways, you could think of
this as being almost like a pair's
programming partner that as you're going
through the code, you've got this agent
in there that knows what you're working
on and then is able to work with you in
this specialized environment. So, one of
the key areas where vibe coding really
falls apart is when you've already got a
code base that you need to work on. So
the cool thing with Junia is that a
large part of the Juni experience is not
just built for starting out from
scratch. It's built for going into a
codebase that you've already got. Being
able to ask a bunch of questions about
it and then under the hood, it's got its
own iterative loop of where you'll plan
what you will actually do. It will then
actually act and either write some code
or optimize code and also write tests to
go along with that. And then it
basically verifies and refineses this.
So it's much more you having a
conversation with the agent about what
you're trying to do structurally in the
code than it is just letting the agent
go wild and basically make everything.
Like many of the other coding agents out
there, it has features where you can set
up guidelines. It has support for things
like MCP. And if you want to, it even
has what's called a brave mode where it
will go and just write a bunch of code
for you. But for me, the real strength
of this comes in this code ask mentality
where you're able to take your code
base, ask a bunch of questions about it,
propose some ideas without writing any
code, and then be able to execute that
as you go into a coding mode. So for
professional developers, this is really
set up for much more sort of trust and
control over what you're actually
creating rather than just letting some
agent go off and make everything by
itself. Like I've mentioned a number of
times, one of the big advantage of this
is for team onboarding. So if you have a
large code base where you've got a team
of people working on this, you're then
able to onboard people faster as they
can then go into ask mode and get
summaries about particular parts of the
codebase, about how things interact with
other things in the codebase. And you
can even have your whole standards and
the whole sort of stack defined. So as
people go in to work on the codebase,
they're able to do queries. they're able
to have things explained to them about
what's actually going on there. So,
let's just jump in, have a look at how
we can do some of the things in here.
Okay, so this is a project that I was
working on with Juni. It uses the live
API or the BAI API from Gemini and they
had a nice sort of demo already out
there, but it wasn't in Nex.js and I
wanted to convert it to Nex.js. I also
wanted to add in some features. So
basically with buttons you could have
someone just sitting there and then
responding to live customer support
queries on the telephone etc. So the
first thing that I needed to do was
generate some project specific
guidelines. And so the idea here is that
you just come in here, you let it look
at your code. And one of the things that
I really like about all of this is that
you can kick off just with ask where
okay, this operates very much like I'm
talking to someone who knows the
codebase. They will go through check out
the codebase and then tell me about the
codebase. What frameworks is it using?
Any features that I should be aware
about? any sort of setup stuff that I
should be aware about that kind of
thing. And once I've done that, I can
then basically generate these project
specific guidelines where it will save
to a markdown file. And you can think of
this as like your agents MD or your sort
of rules MD file that you get for coding
agents or other agents etc. Once Juny
was done with that, then I was able to
just move on to tasks. And this is where
I move over to the auto use where it now
can basically answer questions but it
can also write code and can move on
doing that. I can also select think more
or if I really wanted to I can select
brave mode which I'll talk about in a
second. So at this point I basically had
it convert everything to Nex.js so that
it was actually working as a basic
Nex.js app. And then there are a bunch
of tasks that I wanted to do like update
and add some features to it. And this is
where we see the nice sort of planning
element where it would go off and
execute. So once it'd gone through and
made those changes, I then wanted to
make some changes to how the actual app
was laid out and add some new
functionality to it. Okay. So there are
a lot of really nice sort of quality of
life things in here. So I've been
talking to it and getting it to run some
terminal commands and it can go through
that and do that no problem at all. I've
got the guideline docs open here. Now
you'll see that I've split it. So this
is actually a markdown file. So we can
see it as raw text above here and down
here is markdown. But they're synced. So
if I start scrolling the top one down
looking for something, it will actually
sync the markdown so that I can see what
I'm editing, what's going on, that kind
of thing in here. So looking at the app,
I can see that I've still got some
issues. So I'm going to try out Brave
mode and see if it can actually fix it.
Now I've got the app running live in
another window. So let me get Juny to
basically run through and try to fix
some of the buttons and some of the
issues going on here. Now one of the
things that's nice about even with Brave
mode, it's set up so that if it is going
to make certain terminal commands and
stuff like that, it will still come back
to you and double check if you actually
want to do those things or not. You can
see as this is chugging along, it's been
able to work out where the actual
correct file is. It's got a plan up here
that it's working to. We can come back
and see this plan at any point. And we
can see that it's looking for the actual
symbols and it's working on what it
actually needs to change in here. Okay.
And it's just looking over here. It's
actually gone through and fixed up the
issue, worked out what it was, wired all
this up nicely now so that it should
work. And it looks like that it was
actually a CSS issue that happened in
the conversion. And so it sort of worked
out that okay, it just needs to link
certain things together to basically get
the whole thing working again. I do like
at the end of each run it gives me a
very clear breakdown of what has
actually changed in here of where it's
added code of where it's deleted code.
We can actually bring up and see okay
what was actually changed in here. We
can also see in this diff view looking
at what things have changed. Obviously
we got a lot of nice things from the
editor helping us with colors or things
like that. But here we can clearly see
what's been changed, what's not being
changed very quickly so that we can
decide if we want to roll back anything.
We can review the entire plan and see
what happened. And if any point time we
wanted to roll back, we could just roll
back all of these things. And this is
what I think is really the strength of
Tuni is that it's not about what it
changes. It's about you knowing and
being in control of what it changes.
With you being able to clearly see those
things, you're then able to commit a git
change to this easily. You can basically
tag things. You can push things to new
branches, etc. And you can even do
things like easily generate a change log
and track that based on your recent
commits in here. Another thing that's
really nice is that it will often do
things like this. How often do you want
me to ask questions? If I come into the
settings here, I've got a whole bunch of
different settings for Juny, including
this sort of frequency of questions from
Juny. So, it definitely has more of a
pairs programming kind of feel than
using a lot of these tools that just go
for it and never come back to you and
never ask you anything. Okay, if I want
to set up an MCP server, I can just come
in, paste this in here. I'm just going
to put in my API key and then close
this. And you can see that once I've
added my MCP server, it will show up in
here. I can see the status of it. I also
have the ability to change the model in
here. So if I want to use GPG5, I can
use that. But I can also move over to a
Sonnet 4.5 model if I want to do that as
well. Okay. So you can see here I can go
off and give it a new task, but this
time I'm asking it to use context 7 in
there. So it will use the MCP tool. It
will look at what it has available in
there. It will then look at the actual
tool. I do really like this whole
process of look at the code base, assess
where things are, make a plan, talk with
me, take action, finish the task, give
me a full revision of what's been
changed, what hasn't been changed.
Okay, it's gone through and run and
adhere to its plan. It's worked out what
it needed to change. And then at the
end, it gives me the nice report. At
this point, I can add it all to git. I
can then make a commit. And just like
before, we can come in and see what it's
actually added in here. So, we can see
that it's actually now added a bunch of
things for this live support console.
>> Hello there. I'm your virtual assistant
and I'm here to help. How can I assist
you today? Could you please provide your
order number so I can check its status
for you? Once I have that, I'll be able
to give you an estimated delivery or
resolution time. And don't worry, if
there are any unexpected delays, I'll be
sure to keep you updated. Okay, here's a
quick summary of our conversation so
far. I greeted you and introduced myself
as your virtual assistant, offering my
help. I asked for your order number.
>> Okay, you can hear from that that Juny
has now got this fully converted to
Nex.js. It's all working as expected.
It's been able to add in the new
features that I wanted. And now it's at
a point where I could go through and
just stylize the UI and work on things
like that. So just to finish up, I would
say one of the cool things about Junior
is that it's not trying to measure
success by the amount of code that it's
writing. It really is much more a tool
and that makes it really not a vibe
coding tool, right? Which is great. I
think it actually is measuring much more
about trying to make the least changes
possible to a repo to get a job done.
And this is much more in line with
professional software development than
it is with things like vibe coding tools
that you put in a three-word prompt and
it goes off and generates something that
usually probably doesn't work that well
and it's just going to be eye candy. The
other thing that I think is really a big
win here is that while I've been showing
this with webstorm, which is their sort
of JavaScript editor, we could also be
doing this with Rust, I could also be
doing this with Cotlin or with Java in
something like Intelligj and actually
have that working perhaps with something
like Android Studio to roll out a full
app. Now, I think this is where a lot of
developers are really going to like
this. With a tool like Juny, if you
already know how to code, it can teach
you new frameworks, new languages, and
help you to be able to ship usable
software that can actually be useful and
not just chew up a lot of tokens. So if
you have ever used the Jet Brains idees,
certainly go and check out what Juni can
do for you and try doing some AI coding
where the AI coder is actually like a
pair's programmer that's sitting down
working with you, having a conversation
with you and not just some crazy intern
that's trying to write 50,000 lines of
code in the first hour. Anyway, let me
know in the comments what you think.
There are links to all of this where you
can get started in the description and
check it out. And as always, I will talk
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