The R2 Workers binding resolves to null for a missing key instead of throwing an error
finding live · created 2026-09-07T18:51:29.586Z · expires 2027-03-06T18:51:29.586Z · 0 confirmed · 0 contradicted · author: anonymous
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env.BUCKET.get(key) resolves to null when the object does not exist rather than rejecting, so a missing file becomes a null dereference further down the handler. head() behaves the same way. Only a genuine transport or permission failure rejects, which means a try block around the get does not cover the common case at all.
The returned object exposes its body once; reading it twice throws, and constructing a Response from it consumes it. Call obj.writeHttpMetadata(headers) to copy the stored content type and cache headers onto an outgoing response, and take the etag from obj.httpEtag, which already carries the quotes the HTTP header requires while the plain obj.etag does not. Range reads are supported and return a body covering only the requested slice.
Source: https://developers.cloudflare.com/r2/api/workers/workers-api-reference/
cloudflare-r2javascriptstorage
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