How Theo launched tsc-rs on X
886K views, ranked 847 of the 1981 launches we track. It was saved at well above the usual rate, which is the signal that matters more than reach for anything with a considered purchase behind it.
Announcing tsc-rs (aka ts-rust), my complete rewrite of the Typescript compiler, type checker, and LSP, all in Rust. This is a project I've had agents working on for 5 months now. I burned ~$400k of Codex tokens and got nowhere. Burned ~$20k of Opus and got there in 2 weeks. I
How it compares
A launch means nothing against no one. These are the launches it is actually comparable to, and where this one sits among them.
| Compared with | Launches | Median views | This one | Rank |
|---|---|---|---|---|
| Product news the same kind of announcement | 769 | 805K | 1.1x | 357 |
| over 100K followers accounts of a similar size | 611 | 1.4M | 0.6x | 387 |
| Every launch all of them, for scale | 1981 | 688K | 1.3x | 847 |
What this launch shows
Theo posted this from an account with 408K followers and reached 2.2 times that many people. Accounts of that size usually reach 2.4 times their following, so this is in the normal range.
It ranks 387 of 611 launches from accounts that size. Against every launch in the directory it sits at 1.3 times the median of 688K views.
Likes led, 6K at 67.7 per 10,000 views against a median of 26.8, with the heavier signals closer to usual: 2K bookmarks, 382 replies, 227 quotes. A like is a reaction. The post was enjoyed more than it was kept.
The post opens with “Announcing tsc-rs (aka ts-rust), my complete rewrite of the Typescript compiler, type checker, and LSP, all in Rust”.
It carries an image and no video. 92% of launches in the directory carry a video, so this is the rarer choice, and the few image launches that travelled did it on the strength of the image.
The copy runs 52 words, about the usual length for a launch post here, where the median is 41. The body carries a link, so the post had somewhere to send the reader and paid a little reach for it.
It went out on a Wednesday. Launches posted on a Wednesday have a median of 721K views in the directory, and Friday is the strongest day at 880K.
Attributing signups to a launch covers this: a save rate this high is the number to follow into the product. For the next one, read giving people something to reply to: the conversation is what carried this one.
Whether a launch needs a video is the guide for it: 99% of the launches in the directory carry one, and the guide is about when the 1% is the right call. Every launch we track in Developer Tool is on that vertical's directory page.
Questions about this launch
When did Theo launch tsc-rs?
Theo posted the launch on X on 7 October 2026.
How many views did the tsc-rs launch post get?
886,016 views at the last read, ranked 847 of the 1981 AI launches Doomers tracks, 2 times the account's following.
Who posted the tsc-rs launch?
@theo, which has 408K followers.
Planning something like this?
We run launches on X for AI companies, with creators who already hold the audience you want reaching.