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A three.js prototype rewritten in vanilla JavaScript

Simon Willison had Claude Opus 5.5 rewrite a three.js prototype without the library, in plain JavaScript, and it worked.

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Credits

  • HN commenter simonw Source ↗

Earliest dated source: 10 Nov 2026

The full story

In a Hacker News comment, Simon Willison said he had Claude Opus 5.5 rewrite one of his three.js prototypes in plain JavaScript without the library, and it did the job fine. Both versions are on his site.

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Sources

From a passing comment or social post, so the details are thin.

  • Hacker News: The other day I had Claude Opus 5.5 rewrite a three.js prototype - https: static.simonwillison.net sForum threadnews.ycombinator.com
    HN commenter: simonwPosted 10 Nov 2026

    The comment, with replies.

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