[zakazaka95]

Keep SDK LRU caches within their configured size when the oldest key is an empty string.

The eviction check treated that valid string key as absent. After an empty input was cached, later insertions could leave address or URL validation caches above their size limit.

• Check iterator completion before deleting the oldest key.
• Cover empty-key eviction, recency and subsequent insertions.
• Add a patch changeset.

Validation:

• Both new tests failed on the original implementation; all four LRU tests pass with the fix.
• All 19 selected LRU, address and URL utility tests pass. An independent run also passed the four LRU tests.
• pnpm --filter 'thirdweb...' build, pnpm fix --filter=thirdweb and pnpm lint --filter=thirdweb pass, including declarations, CJS/ESM, Knip and type checking. Biome reports 562 warnings in unchanged code.

The selected tests use the stock Vitest configuration with only its remote-chain-fork global setup disabled in an external temporary harness. The full stock test suite was not run because it starts remote chain forks.

Summary by CodeRabbit

• Bug Fixes
  • Fixed cache eviction so empty-string keys are properly removed when the cache exceeds its size limit, while recently accessed entries remain available longer.

[changeset-bot]

🦋 Changeset detected

Latest commit: 4499d94

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
thirdweb	Patch
@thirdweb-dev/wagmi-adapter	Patch
wagmi-inapp	Patch

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[coderabbitai]

No actionable comments were generated in the recent review.

Walkthrough

The LRU cache now evicts an empty-string key when it is the oldest key. Tests cover eviction and recency updates. A patch changeset describes the fix.

Changes

LRU eviction

Layer / File(s)	Summary
Correct eviction for empty-string keys packages/thirdweb/src/utils/caching/lru.ts, packages/thirdweb/src/utils/caching/lru.test.ts, .changeset/empty-cache-keys-evict.md	LruMap.set checks whether the key iterator is exhausted before deleting its first key. Tests verify that an empty-string key is evicted when oldest and that accessing it refreshes its recency. The changeset describes the patch.

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix

Suggested labels: packages, SDK

Suggested reviewers: 0xfirekeeper

Merge Risk: Minimal · up to 4499d

The cache fix addresses empty-key eviction, with no merge-blocking risk evident.

Pre-merge checks: 5

Check name	Status	Explanation
Title check		The title clearly describes the main cache eviction fix.
Description check		The description explains the fix, test results, and test limitations. It does not use the template headings or include an issue tag.
Docstring Coverage		No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 0 functions across 2 files. (1 skipped: 1 unsupported.)

Finishing Touches

Generate unit tests (beta)

• Create a new PR

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

Recent review info

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• Run ID: 7312c863-c3c6-4052-b94e-1e57a65c8b82

Commits

Reviewing files that changed from the base of the PR and between 940b374 and 4499d94.

Files selected for processing: 3

• .changeset/empty-cache-keys-evict.md
• packages/thirdweb/src/utils/caching/lru.test.ts
• packages/thirdweb/src/utils/caching/lru.ts

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