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fix: add npm-* headers to CORS #1163

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fix: add npm-* headers to CORS #1163

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alexgleason
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Currently it's not possible to download JSR packages within browser environments (eg, in WebContainers). This fix adds CORS headers to prevent errors like this:

Access to fetch at
'https://npm.jsr.io/~/11/@jsr/nostrify__react/0.2.8.tgz' from origin 'https://h11gbxowc46vh5zy16u09l3mau3ohm-pock.w-corp-staticblitz.com' has been blocked by CORS policy: Request header
field npm-command is not allowed by Access-Control-Allow-Headers in preflight response.

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CLAassistant commented Jul 17, 2025 •
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@alexgleason @CLAassistant