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fix(storage): type upload options, let authorize grant context - #1044
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R2BindingUploadStorageOptions omitted metaStorage with a plain Omit over
BaseStorageOptions, whose [key: string]: unknown index signature made
every declared option unknown. It now strips the index signature first,
so allowMIME, filename, onCreate, ... keep their types, callback params
are typed, and unknown keys are refused.
createUploadHandler's authorize may now return a Response, answered as
is (a 429 with Retry-After, say), or a { context } grant. The grant's
context is held in an AsyncLocalStorage for the rest of the request and
read back with the new getUploadContext() from the provider's callbacks
(filename, onCreate, ...) and maxFileSizeFor, so per-caller naming like
uploads/<userId>/<id> works with one handler and one provider.
BREAKING CHANGE: R2BindingUploadStorageOptions is now a type alias with
no index signature, so an option the provider does not declare is a type
error. authorize's return type is now UploadAuthorizeResult
(boolean | Response | UploadGrant).
Closes #1040
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019eqAUAYWECEXnGUUr8A1Fr
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Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 0 remain after this review. WalkthroughThe R2 binding options retain their declared types. Upload authorization supports grant contexts and refusal responses. Admitted requests expose the granted context to upload callbacks. ChangesR2 storage option typing
Upload authorization context
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant UploadRequest
participant createUploadHandler
participant authorize
participant AsyncLocalStorage
participant maxFileSizeFor
UploadRequest->>createUploadHandler: fetch(request)
createUploadHandler->>authorize: evaluate request
authorize-->>createUploadHandler: return grant(context)
createUploadHandler->>AsyncLocalStorage: run admitted work in grant scope
createUploadHandler->>maxFileSizeFor: check size with granted context
Merge Risk: ⚪ Minimal · up to The upload subpath’s Workers compatibility requirement is documented, and the reviewed refusal-response path has no identified issue. No actionable merge risk remains. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Review fixes for #1044. - authorize could admit any object with a `context` key, inherited or beside `valid: false`. A grant now comes only from createUploadContext<Context>().grant(value), an opaque token checked by WeakMap membership; anything else is denied (403). - getUploadContext(): unknown is replaced by the typed UploadContext's get(), which throws when the request was not admitted with one of its grants instead of returning an ambiguous undefined. The docs and tests need no casts. - maxFileSizeFor reads the granted value from a typed `granted` field on UploadSizeContext; the AsyncLocalStorage only serves provider callbacks. - The gate moves into runGate(), which owns the try/catch and returns the refusal or the grant, so fetch is check, gate, run. - A Response from authorize gains Tus-Resumable on a TUS route when it has none, and its docs say it is for 4xx/5xx refusals. BREAKING CHANGE: getUploadContext is removed and authorize can no longer return a `{ context }` object; use createUploadContext<T>(), return its grant(value), and read it with get(). UploadGrant is now opaque, and UploadSizeContext, UploadAuthorizeResult and CreateUploadHandlerOptions take a Context type parameter. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019eqAUAYWECEXnGUUr8A1Fr
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Additional details and impacted files@@ Coverage Diff @@
## alpha #1044 +/- ##
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Coverage 82.18% 82.18%
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Files 1794 1794
Lines 97409 97438 +29
Branches 24165 24149 -16
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Partials 637 637
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Inline comments:
Review comments at @packages/storage/src/upload-handler.ts:
- Line 31: Document the Workers compatibility requirement for the
`@lunora/storage/upload` subpath: compatibility dates before August 4, 2026
require `nodejs_als` or broader Node.js compatibility because the static
`node:async_hooks` import can fail at load time. Make clear that deferring
`AsyncLocalStorage` construction alone does not address this requirement.
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api-snapshots/storage.api.mdis excluded by none and included by noneapps/docs/src/content/docs/concepts/file-storage.mdxis excluded by!**/docs/**and included byapps/**packages/storage/__tests__/r2-binding-upload-storage.test.tsis excluded by!**/__tests__/**,!**/*.test.tsand included bypackages/**packages/storage/__tests__/upload-handler.test.tsis excluded by!**/__tests__/**,!**/*.test.tsand included bypackages/**packages/storage/docs/index.mdxis excluded by!**/docs/**and included bypackages/**
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packages/storage/src/r2-binding-upload-storage.tspackages/storage/src/upload-handler.tspackages/storage/src/upload.ts
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The `node:async_hooks` import is static, so a Worker with a compatibility date before 2026-08-04 that sets neither `nodejs_compat` nor `nodejs_als` fails when the module loads — the subpath never reaches `createUploadHandler` or `createUploadContext`, so deferring the `AsyncLocalStorage` construction would not lift the requirement. The subpath also pulls `node:stream` in through the R2 providers, which `nodejs_als` alone does not cover: `nodejs_compat` is what `@lunora/storage/upload` needs. Review: CodeRabbit on #1044
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## @lunora/storage [1.0.0-alpha.120](https://github.com/anolilab/lunora/compare/@lunora/storage@1.0.0-alpha.119...@lunora/storage@1.0.0-alpha.120) (2026-10-08) ### Bug Fixes * **storage:** type upload options, let authorize grant context ([#1044](#1044)) ([9bcb5a8](9bcb5a8))
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Summary
Closes #1040.
R2BindingUploadStorageOptionswasOmit<BaseStorageOptions, "metaStorage">.BaseStorageOptionshas a[key: string]: unknownindex signature, soOmiterased every declared option tounknown. ADeclaredKeys<T>helper now drops the index signature before omitting.authorizereturnsboolean | Response | UploadGrant<Context>.Responseis passed through for 4xx/5xx refusals, e.g. 429 +Retry-After. On TUS routes it getsTus-Resumableadded.const caller = createUploadContext<{ userId: string }>(), thenauthorizereturnscaller.grant({ userId }). Grants are opaque, tracked in a privateWeakMap, so a hand-built{ context }or{ valid: false, context }is still a 403. Fail-closed is preserved.filename,onCreate,onComplete) read the grant withcaller.get()(AsyncLocalStorage, per request).get()throws when the request wasn't admitted by a grant from that context.maxFileSizeForgets it as a typedgrantedfield instead.uploads/<userId>/…).BREAKING CHANGE:
R2BindingUploadStorageOptionsis a type alias,authorize's return type changed, andcreateUploadHandler/ its option and result types take aContexttype parameter. New exports:createUploadContext,UploadGrant,UploadAuthorizeResult.Docs:
packages/storage/docs/index.mdxandapps/docs/.../concepts/file-storage.mdx.Test plan
@lunora/storagevitest: 497 passed. Includes type tests against the oldOmit, and denial tests for forged and inherited grantsLUNORA_WORKERD_TESTS=1: 522 passedtsc --noEmit, ESLint,api:check(storage snapshot updated)70dfa4703🤖 Generated with Claude Code
https://claude.ai/code/session_019eqAUAYWECEXnGUUr8A1Fr
Summary by CodeRabbit
Tus-Resumableheader when it is missing.nodejs_compatflag;nodejs_alsalone is not sufficient.