Async await uses generators to allow asynchronous code to be written in a synchronous-looking way and is an ES7 feature used widely. Proxies are an ES6 feature that cannot be transpiled and are used for testing, debugging, and performance tuning. Weak maps are also an ES6 feature that cannot be transpiled and are used for caching in libraries.

1. Async Await
Proxies & WeakMaps
Pasindu Perera

2. Pasindu Perera
Streamsets Inc
@udnisap

4. Async Await
● Can Transpile
● Uses generators
● ES7 feature
● Used pretty much everywhere

9. Proxies
● Can not transpile
● ES6 Feature
● Used for testing
● Used for debugging
● Performance tuning

16. Debugging / Performance tuning

17. Testing

19. Weak Maps
● Can not transpile
● ES6 Feature
● Used for caching
● Used in libraries

20. What is a Map?

21. Map Weak Map