Tinyqueue Versions Save

Improve TypeScript definitions for pop and peek.

Improve TypeScript typings.

• Export TypeScript typings.
• Fix a race condition with pop().

Expose a module entry point with modern ES code.

• Add default export for better compatibility with Babel and similar tools.
• Small performance improvement.

Fixed a bug when initializing the queue with an empty array.

Fixed a a few edge cases, including a regression in 1.2.0.

20% faster, thanks to ideas from FastPriorityQueue.js and qheap.