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Syntax - Tasty Web Development Treats
774: Promise Flow Control, Concurrency, Libraries, TypeScript and Deferreds - Part 3
May 27, 2024
20:39
Snipd AI
In this podcast, they discuss deferred promises, fetch API, flow control, concurrency using p-map and p-limit, and integrating TypeScript. Topics include stream processing, converting data to video files, optimizing data fetching with concurrency control, and advanced API handling techniques in TypeScript.
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Quick takeaways
- New Promise.withResolvers() simplifies handling resolve and reject methods outside promise scope for easier access in various applications like streams.
- Concurrency tools like P-map and P-limit optimize processing for massive tasks without overwhelming systems, crucial for efficient resource management.
Deep dives
Deferred Promises and WithResolvers
When working with promises and needing access to resolve and reject methods outside of the promise body, previously, it required creating variables outside of the promise scope and updating them inside. However, with the introduction of withResolvers, you can now easily surface the resolver and reject methods alongside the promise itself, making it convenient for various applications like streams.
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