Brave New World: Moving on to ES201X
summary
Status update on ES2016–ES2018 features and V8 performance: bigint native beats user-space libs and ships in Chrome 67 and Node 10 LTS, async generators and object rest/spread are live in Chrome, a for‑of array fast path is widened to fix a webpack build slowdown that went from 14 minutes to 2 minutes, await semantics force at least two extra promises and three microtask hops but a subtle optimization that broke ordering is removed, and several promise/async benchmarks show up to 10x improvement after fixes.
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chapters (10)
- 0:00Start
- 2:00Brief history of JavaScript
- 11:40Double precision floating point numbers (Float64)
- 16:12What happened?
- 17:13Why did that happen?
- 17:49What went wrong?
- 18:36What did we do?
- 19:05What can you do?
- 29:24Async Programming
- 30:50Conclusion
