EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Aug 15·5 min read
What do you think of LazyPromise as a lightweight alternative to Effect?
TL;DR
LazyPromise is introduced as a lightweight alternative to traditional Promises and Observables in JavaScript, offering single-shot behavior with effective cancellation. It addresses limitations of native Promises, particularly around eager execution and microtask management.
✦ Why It Matters
Consider using LazyPromise for better control over single-shot asynchronous operations in your JavaScript projects.
Key Takeaways
- Use LazyPromise for lazy execution of asynchronous tasks.
- Implement typed error handling with ErrorBox for clarity.
- Leverage dependency injection to manage async dependencies.
- Subscribe to LazyPromise to trigger execution and handle results.
How It Works
LazyPromise operates by wrapping a function that only executes when a subscription occurs. This allows for lazy evaluation, meaning the promise does not resolve until explicitly called upon.
It also includes a teardown function that can be executed if no emissions occur, ensuring resources are managed efficiently.