THthunderbong·Jul 20, 2024Submission
Flems: A single file web playground and sandbox
3 points · Open discussionporsager
flems
JavaScript2017–2024
porsager / flems
flems
A single file web playground and sandbox
4Distinct people
7Mentions
0Explicit recommenders
538GitHub stars
What to know before exploring
What it is
A single file web playground and sandbox
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 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 year7 dated mentions
Observed mentions: 2017-10-07 18:46:10 UTC to 2024-07-20 07:35:33 UTC.
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 |
|---|---|---|---|---|---|
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 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 | 1 | 0 | 1 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 1 | 1 | 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 | 1 | 1 | 0 |
What Hacker News says
7 sourcesPorsager/flems: A single file web playground and sandbox
5 points · Open discussionHey, that's what Flems is for. Check out https://github.com/porsager/flems - a single include embeddable sandbox (coincidentally written in mithril as the original post references). It's also used for https://flems.io
In Show HN: 33 line ReactLichobile[0] (lichess[1] mobile version) is also made with mithril.
There's also https://flems.io a snappy web playground with an open source embeddable core[2] ( shameless self promotion :P )
[0]: https://github.com/veloce/lichobile
[1]: http://lichess.org
[2]: https://github.com/porsager/flems
In Mithril.js – A modern client-side Javascript frameworkThis is somewhat where I'd like to see https://flems.io going. It's based on the open source Flems web playground (https://github.com/porsager/flems), so doing different kinds of embeds and sharing directly runnable code could be added easily. Currently the entire state lives in the URL, which is pretty interesting for sharing, and it really makes it a true serverless app, but I'm working to support shareable sessions and live streaming of changes as well.
In Show HN: Devstream.tv – Watch developers code liveThis was a great read, and a pleasure to follow your path to the end result. I think it would be great if you would Open Source it.
I've been working some time on a web playground ( https://flems.io ). It is based on an open source single file module (https://github.com/porsager/flems) that anyone can use to make a live showcase for their documentation / examples and what not.
Flems.io simply uses unpkg.com directly. Unpkg.com does it's own resolution by first looking for an `unpkg` field, then `browser` and last `main` in package.json. This works great since most browser packages also comes with a browser distribution.
If the package doesn't point to a browser compatible bundle you can always go directly to a working one, like in the case of react, which would be used like this: https://goo.gl/b4546q
In How we run NPM packages in the browser