This PR is AI-generated.

Summary

This PR introduces a new queueByKey utility in the async module. It wraps an async function and ensures that calls with the same key are run one at a time, in order. Calls with different keys run in parallel.

This is helpful when you need to avoid race conditions for grouped operations—like:
• Serializing DB writes by record or table
• Avoiding overlapping API calls for the same user
• Throttling per group without blocking all calls globally

What’s included:
• Full TypeScript support with generics
• Clean error handling and propagation
• Automatic cleanup when queues are empty
• 100% test coverage
• Docs and usage examples

Related issue, if any:

N/A

For any code change,

• Related documentation has been updated, if needed
• Related tests have been added or updated, if needed
• Related benchmarks have been added or updated, if needed (N/A - async functions don't require benchmarks per implementation guide)
• Release notes in next-minor.md or next-major.md have been added, if needed

Does this PR introduce a breaking change?

No

Bundle impact