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fix: register cache mount under kv on nitro v3 - #982
On Nitro v3 the storage option was renamed to kv. Because ensureNuxtScriptsCacheStorage() writes nitro.storage, every Nuxt 5 build logs "storage" option is deprecated. Please use "kv" instead.
ensureNuxtScriptsCacheStorage() takes the Nitro version and writes the nuxt-scripts-cache mount to kv on Nitro v3, or to storage on Nitro v2 (the default, so existing callers don't change).
On Nitro v3 the module adds the default in nitro:init, once the options are resolved. Nitro merges kv from nitro.config.ts under the inline Nuxt config, so a default set at module time would replace an application mount declared there. With nitro@3.0.261103-rc that mount ended up with our driver and its own base. Mounts are read again by resolveKVMounts at build time, so the default still takes effect. Nitro v2 keeps the previous module-time behaviour.
An application mount is preserved whether it's configured under kv or under the legacy storage key.
Two unit tests in test/unit/cached-upstream-lifecycle.test.ts cover the kv mount and the preserved application mounts.
Locally I verified the nitro.config.ts case directly against Nitro's loadOptions, and ran eslint; the unit tests and typecheck run in CI.
Harlan Agent Kit posted this automated review. It is not Harlan's personal review or approval. AI open source policy. A person still decides the merge.
No actionable comments were generated in the recent review.
Walkthrough
The module now passes the current Nitro version to ensureNuxtScriptsCacheStorage. The function uses storage for Nitro versions before 3 and kv for Nitro 3 or later. It preserves an existing mount and initialises the selected mount only when absent. Tests cover Nitro 3 mount selection and preservation.
This PR removes the deprecation warning by registering the cache mount under kv on Nitro 3, and it keeps application-configured mounts. On Nitro 3, the cached functions may still use in-memory caching instead of the configured mount's limits and persistence. That affects cache bounding rather than correctness, so a maintainer should be aware of it, but it need not block the merge.
Pre-merge checks: 3 · 1
Failed checks: 1 inconclusive
Check name
Status
Explanation
Resolution
Linked Issues check
Directly linked issue [#981] requires three behaviours: write the nuxt-scripts-cache mount to kv on Nitro v3, keep storage on Nitro v2, and skip the write when the application already configured…
Provide readable evidence of the current packages/script/src/module.ts cache setup, including the nitro:init branch for Nitro v3 and the getNitroVersion call. Confirm that the deferred ensureNuxtScriptsCacheStorage(..., 3) call stil…
Passed checks: 3 passed
Check name
Status
Explanation
Title check
The title names the main change: the cache mount is now registered under the kv key on Nitro v3. It matches the changeset, which writes the nuxt-scripts-cache mount to kv on Nitro v3 and keeps storage…
Out of Scope Changes check
The changes since the previous review affect module.ts. Per the supplied summary, cache storage setup for Nitro v3 is deferred to the nitro:init hook, and version 3 is passed to the helper. This…
Description check
The description is directly related to the changeset. It names the function ensureNuxtScriptsCacheStorage(), explains the Nitro v3 storage to kv rename, and describes the version-dependent mount…
Full details: Title check
Explanation
The title names the main change: the cache mount is now registered under the kv key on Nitro v3. It matches the changeset, which writes the nuxt-scripts-cache mount to kv on Nitro v3 and keeps storage on Nitro v2. The title is specific and uses the correct identifiers.
Full details: Out of Scope Changes check
Explanation
The changes since the previous review affect module.ts. Per the supplied summary, cache storage setup for Nitro v3 is deferred to the nitro:init hook, and version 3 is passed to the helper. This supports the Nitro-version routing that [#981] requests. The cache-config.ts change is limited to the version-aware routing in ensureNuxtScriptsCacheStorage(). No unrelated change is established. This verdict relies on the summary for the module.ts hunk, because the diff could not be read.
Full details: Description check
Explanation
The description is directly related to the changeset. It names the function ensureNuxtScriptsCacheStorage(), explains the Nitro v3 storage to kv rename, and describes the version-dependent mount logic. It also lists the two unit tests added in test/unit/cached-upstream-lifecycle.test.ts, which match the raw summary.
Full details: Linked Issues check
Explanation
Directly linked issue [#981] requires three behaviours: write the nuxt-scripts-cache mount to kv on Nitro v3, keep storage on Nitro v2, and skip the write when the application already configured the mount under either key. At the reviewed head, ensureNuxtScriptsCacheStorage() in cache-config.ts meets all three on code evidence. On v3 it returns early when storage already has the mount, and otherwise writes to kv using ||=, which keeps an existing kv mount. On v2 it writes to storage. The head moved from 47a8bc5 to 6770c4b. The change since the previous review adds a nitro:init deferral for v3 in module.ts. The module.ts diff and file body could not be read: the diff call failed on missing changed blobs, and the file read was truncated at 16000 bytes. The effect of the deferred call on the mount is therefore unverified. The previous PASS does not cover this timing change.
Resolution
Provide readable evidence of the current packages/script/src/module.ts cache setup, including the nitro:init branch for Nitro v3 and the getNitroVersion call. Confirm that the deferred ensureNuxtScriptsCacheStorage(..., 3) call still runs before Nitro resolves its kv options. Confirm that the mount reaches the resolved Nitro options. Once available, this assessment can be re-run.
Finishing Touches
Generate unit tests (beta)
Create a new PR
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Actionable comments posted: 2
Fix comments: Fix CodeRabbit comments on this PR
Prompt to fix all issues
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Inline comments:
Review comments at @packages/script/src/runtime/server/utils/cache-config.ts:
- Line 26: Update the `nitroOptions.kv` defaulting logic so adding the default
cache mount preserves an application-provided `nuxt-scripts-cache` mount,
including one loaded from a separate Nitro configuration file. Only provide the
default when no configured mount exists, so the selected KV driver continues to
use its configured backend.
- Around line 25-26: Update the Nitro 3 configuration around nitroOptions.kv so
defineCachedFunction uses the nuxt-scripts-cache mount and its configured limits
and persistence; establish the supported Nitro cache-to-KV mount configuration
rather than relying on the KV mount alone. Preserve any explicit application
cache driver or cache-prefixed mount without overriding it.
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harlan-agent-readyThe automated Review passed every gate on this head commit.
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Resolves #981
On Nitro v3 the
storageoption was renamed tokv. BecauseensureNuxtScriptsCacheStorage()writesnitro.storage, every Nuxt 5 build logs"storage" option is deprecated. Please use "kv" instead.ensureNuxtScriptsCacheStorage()takes the Nitro version and writes thenuxt-scripts-cachemount tokvon Nitro v3, or tostorageon Nitro v2 (the default, so existing callers don't change).nitro:init, once the options are resolved. Nitro mergeskvfromnitro.config.tsunder the inline Nuxt config, so a default set at module time would replace an application mount declared there. Withnitro@3.0.261103-rcthat mount ended up with ourdriverand its ownbase. Mounts are read again byresolveKVMountsat build time, so the default still takes effect. Nitro v2 keeps the previous module-time behaviour.kvor under the legacystoragekey.test/unit/cached-upstream-lifecycle.test.tscover thekvmount and the preserved application mounts.Locally I verified the
nitro.config.tscase directly against Nitro'sloadOptions, and raneslint; the unit tests and typecheck run in CI.🤖 Generated with Claude Code