BEBeetleB·Aug 14, 2026
I would expect you can.
lexilambda created Typed Racket on top of Racket. https://github.com/racket/typed-racket
In Gödel, Escher, Elisp: The Beauty of Macrosracket
typed-racket
Racket2018–2026
racket / typed-racket
typed-racket
Typed Racket
4Distinct people
4Mentions
0Explicit recommenders
578GitHub stars
What to know before exploring
What it is
Typed Racket
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
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Also in these discussions
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year4 dated mentions
Observed mentions: 2018-08-26 05:55:49 UTC to 2026-08-14 16:07:43 UTC.
* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
4 sourcesLast weekend, I put together a working sample for how to show multiple syntax errors from Racket macros. It works in DrRacket and racket-xp-mode. It's based on code from Typed Racket.
https://gist.github.com/srcreigh/f341b2adaa0fe37c241fdf15f37...
The well-documented Racket `raise-syntax-error` will let you display 1 syntax error at a time. It works by throwing an exception during macro expansion hence you only get 1 error in your IDE. That code lets you highlight 2+ errors.
Please build a type system in Racket! I would love to try it out.
Helpfully, the above sample code is an example of how to store compiler-level state. It works by storing errors in a list until its parsed the whole module, then sends all the errors to an error handler (which is not documented so well). Next, just wrap all your base forms, rewrite module code for your
Read the rest
type-checking lifecycle, add some type declaration syntax, type inference, etc.
I would love to have a language that can be used to define a customized type system in Racket.
Typed Racket is an incredible feat. Can you imagine adding an entire type system without writing a separate compiler? Using all the batteries included with your language? Even IDE tooling has its own API to let you display any error messages you want? Not to mention Go-To-Definition is built into the language.
I don't like that Typed Racket enforces soundness with Runtime checks, I much prefer TypeScript style checking. I also have run into some pretty confusing messages ie [1]. Diversity is healthy, it'd be nice to have a selection of static typechecking systems to choose from for Racket.
[1] https://github.com/racket/typed-racket/issues/1021
> I like how TS is unsound (has no runtime performance penalty for mixing untyped code), and is easily disabled via any if it's in the way.
This is already done. See https://github.com/racket/typed-racket/pull/952 for RFC and https://github.com/racket/typed-racket/pull/948 for the implementation.
In Creating Languages in Racket (2011)Typed racket is pretty close .
https://github.com/racket/typed-racket
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