Jon Kuperman
@jkup · London, England · joined 21 Feb 2011
11 195Followers
500Following
34 828Posts total
20.7KViews on collected posts
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@jkup Thanks for your hard work! I've been working on https://t.co/qDZlIv2etU as a way to level up my Rust while bringing some (hopefull) performance improvements to the source map ecosystem. Full ECMA-426 implementation with WASM bindings and scopes proposal support.
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Source maps are a vital part of modern web development, but the lack of a standard made it impossible to add new features or improve the debugging experience.
This is the story of how we standardized source maps and how we continue to ship features through standards 📜
🧵 https:/
![A JSON file representing a source map. The code contains:
{
"version": 3, // Always the integer 3
"file": "out.js", // Optional: name of the generated file
"sourceRoot": "", // Optional: prefix prepended to each entry in "sources"
"sources": ["foo.js", "bar.js"], // Required: list of original source URLs/paths (or null)
"sourcesContent": [null, null], // Optional: inlined source text, aligned with "sources"
"names": ["src", "maps"], // Optional: symbol names referenced by "mappings"
"mappings": "A,AAAB;;ABCDE", // Required: encoded mapping data (base64-VLQ deltas)
"ignoreList": [0] // Optional: indexes into "sources" considered "third-party"
}](https://pbs.twimg.com/media/HDEZGoEXwAAJPRF.jpg)
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Made a fun thing with @Cloudflare tech https://t.co/FT2ID1NIHZ
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@mikhail_barash Thank you again for being such an amazing host!
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Site: Choose a password
Me: oGUWi4!N^*5!y7MkiZnr
Site: Must be under 13 letters
Me: Pye8z#&9F2Ta
Site: No symbols
Me: TrbqhSVthFoP
Site: No pasting
Me: 123456
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Growth & engagement
How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.
Views per post
5015 Jul
6345 Jul
78531 Oct
18.2K10 Mar
1K
6612 Mar
Last 6 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.
Engagement rate per post
2.00%15 Jul
0.32%5 Jul
0.89%31 Oct
0.54%10 Mar
1.58%
1.52%12 Mar
Reactions — likes, reposts, replies and quotes — divided by views.
What the audience does
Likes63.9%108 in total
Reposts5.3%9 in total
Replies3.6%6 in total
Quotes1.8%3 in total
Bookmarks25.4%43 in total
Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.
The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.
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