From Promises through Generators to async/await in node.js
summary
An end-to-end code demonstration converting a Node.js HTTP handler through four styles: callbacks, ES6 Promises, generator-based (co-style), and ES7 async/await. It shows the specific shim/wrapper used, which Node APIs are invoked, live code and tests, plus a simple benchmark comparing throughput and lines of boilerplate (async/await yields similar throughput, less nesting, ~30% fewer boilerplate lines), with all versions passing the same integration tests.
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chapters (8)
- 0:00Async patterns in Node.js
- 3:02JavaScript promises basics
- 7:25Promises to generators
- 10:00Generators and async/await
- 13:19Async/await simplifies promises
- 16:03Async/await use cases
- 19:10Callbacks vs promises vs async/await
- 21:11Q&A
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