Non-blocking concurrency built on event loops, futures, promises, and coroutines that lets a single thread overlap many in-flight I/O operations.
async/await syntax, error handling, parallel execution with Promise.all, sequential vs parallel loops, top-level await, AbortController, and common mistakes.
JavaScript Promises represent the eventual completion or failure of an async operation. Covers states, chaining, combinators, callback conversion, AbortController, and common anti-patterns.
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