Jon Lynch

Air breather, Full-Stack Developer, Software Engineer, Life and stuff.

[Kayvon Beykpour @kayvz]

We just launched a new version of @Macroscope code review that finds significantly more bugs, including 71% more critical issues, 27% more high-severity issues, 50% more medium-severity issues, and 31% more valid issues overall in our benchmarks, at the expense of a modest increase in false positives and review latency.

[Macroscope @Macroscope]

Ask Macroscope Anything (AMA) is now Macroscope Agent, and it got a big upgrade today:

→ 6 new integrations (Sentry, Amplitude, GCP Logging, GitHub API, image gen, and MCP)
→ Event-driven automations triggered by commits and PRs
→ Webhook delivery + an API

[Jon Lynch @jonlynch]

This is the way. Pay for what you use, nothing more.

[Kayvon Beykpour @kayvz]

https://t.co/Rro0TArYui

[Macroscope @Macroscope]

Deep codebase understanding means an agent that (without being told):

> knows your feature branch exists
> knows the bug lives there
> targets the fix correctly

Fix bugs from anywhere with Macroscope

[Jon Lynch @jonlynch]

@TechLayoffLover Delete your Jira account now.

[Macroscope @Macroscope]

Today we're releasing Macroscope Code Review v3. Based on our internal benchmarks:

→ Detects up to 3.5x more bugs that would cause real production damage (data loss, security breaches, crashes, etc). The kind you'd block a PR over.
→ Precision increased to 98% (up from 75%) which means significantly fewer false positives.
→ Leaves 22% fewer comments overall, including 64% fewer nitpicks in Python and 80% fewer in TypeScript.

[Macroscope @Macroscope]

Hello World 👋

Macroscope uses your codebase to automatically summarize product development activity, answer questions (about product and codebase functionality, and dev progress) and catch bugs.

Sign up now and get a 2 week free trial.

[Macroscope @Macroscope]

what did you get done this week?

[Jon Lynch @jonlynch]

@ThePrimeagen Pre Covid levels + tariff uncertainty + interest rates + AI uncertainty = hesitancy in hiring.

[Jon Lynch @jonlynch]

@PHILHEATH I bet this guy has a really messy house. And he probably doesn’t floss.

[Jon Lynch @jonlynch]

@wesbos @syntaxfm

[Jon Lynch @jonlynch]

@CicmilJovan I taught a bootcamp for 8 years. Only my last cohort used AI assistants. Many of their final projects were completely unusable because of all the vibe coding going on. LLMs only help devs who know what they’re doing. And even then, grain of salt heavily applies.

[Jon Lynch @jonlynch]

@housecor I may not have made that clear. I still love TS!

[Jon Lynch @jonlynch]

@joe_gichuru @housecor That’s a bit of an assumption. True, I don’t use TS every day in my 9-5, but I’m not a novice. I actually taught it to 100’s of students.

My original point was to agree with Cory’s assertion that excessive typing can slow us down.

[Jon Lynch @jonlynch]

@mfpears @housecor Yes. But only for a few weeks. And like I said it’s an existing codebase. So it’s not like I’ve had much time to absorb a lot of it. It’s a great app, but lots of abstractions to the point where it makes it difficult to navigate the code base.

[Jon Lynch @jonlynch]

@stolinski

[Jon Lynch @jonlynch]

@ThePrimeagen The nested loops. So much wow. 🐕

[Jon Lynch @jonlynch]

@housecor Don’t get me wrong, I love Typescript with the right implementation. The particular scenario I mentioned was one where there are types upon types upon types. There’s definitely a line where typing can go too far.