fix(unhead): deduplicate matching tags inside same render cycle#668
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harlan-zw merged 1 commit intoFeb 25, 2026
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fix(unhead): deduplicate matching tags inside same render cycle#668harlan-zw merged 1 commit intomainunjs/unhead:mainfrom fix/dedupe-script-link-tags-mainunjs/unhead:fix/dedupe-script-link-tags-mainCopy head branch name to clipboard
harlan-zw merged 1 commit into
mainunjs/unhead:mainfrom
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script[src] and link[href] tags across entries
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…ntries Tags without an explicit dedup key (like `script[src]` and `link[href]`) were keyed by their unique position index in `dedupeTags()`, meaning identical tags from separate entries were never deduplicated. Now falls back to `hashTag()` (content-based hash) instead of position, so identical tags collide and deduplicate. The hash is precomputed during tag normalization and cached on `_h` to avoid recomputation in the DOM renderer. Closes #666
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🔗 Linked issue
Closes #666
❓ Type of change
📚 Description
Tags without an explicit dedup key (
script[src],link[href]) were keyed by their unique position index during tag resolution, so identical tags from separate entries were never deduplicated within the same render cycle.Now falls back to
hashTag()(content-based hash) instead of position index, so matching tags collide and deduplicate correctly. The hash is precomputed during normalization and cached on_hto avoid recomputation in the DOM renderer.