Strict typing configuration

[jmlweb]

Configure strict typing by enabling stricter TypeScript compiler options and resolving newly surfaced type errors.

The exactOptionalPropertyTypes flag surfaced a real typing issue in lruCache.ts where an optional property was explicitly set to undefined instead of being omitted. Additionally, a flaky timing assertion in delay.test.ts was stabilized due to timer resolution inconsistencies.

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Note

Strengthens type safety and aligns code with stricter compiler checks.

• TS config tightened in tsconfig.json (e.g., isolatedModules, noFallthroughCasesInSwitch, noPropertyAccessFromIndexSignature, noUncheckedIndexedAccess, exactOptionalPropertyTypes, useUnknownInCatchVariables), and project includes/excludes updated.
• LRU cache typing fix: set now omits expiration when undefined instead of setting it to undefined, complying with exactOptionalPropertyTypes.
• Test deflake: delay.test.ts relaxes minimum elapsed threshold (>=45ms) to account for timer resolution.

^{Written by Cursor Bugbot for commit 0deaf27. This will update automatically on new commits. Configure here.}

[cursor]

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[jmlweb]

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[github-actions]

🎉 This issue has been resolved in version 1.11.0 🎉

The release is available on GitHub release

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