Elixir Evening Club 1 01.06.2017 Kyiv, Hub 4.0

1. ESSENTIAL
JAVASCRIPT
ELIXIRSCRIPT
@rastopyr_ua

2. André Maginot

3. what is elixirscript?
source-to-source compiler
elixir -> javascript

4. success stories
• clojurescript
• closure compiler
• coffeescript
• typescript
• babel

5. How it happens
• pass code to elixir compiler
• compile(and get error messages)
• load modules(and expand macros)

6. transform ast
• convert to elixir ast
• transforms to Javascript AST
• transforms to Javascript CODE

7. show what you can
• most special forms
• modules
• functions
• pattern matching
• public macros
• protocols
• structs
• sigils
• bitstring

8. Primitive Mapping
elixir javascript
List Array
Map Object
Atom Symbol
Binary String
Integer,Float Number
Bitstring ErlangTypes.Bitstring
Tuple ErlangTypes.Tuple
PID ErlangTypes.PID
Reference ErlangTypes.Reference

9. limitations
• No OTP
• Buggy Processes
• Not all special forms
• No private macros
• incomplete standard library
• babel

10. JS interop
• spec compatible
• es6
• es5(legacy support)

11. JS interop
• web API
• window
• document
• html5

12. JS.<javascript operator name>
JS interop

13. build tools
• webpack
• brunch

14. Not optimized build

15. DEMO TIME

16. Future*
• not production ready yet
• not enough documentation
• increase support of standard library
• dependency resolution(oh god!)
• add support of source maps(really?)
• stable processes
*але е одне але

17. WebAssembly

18. Elixir Javascript
Binary format

19. CONCLUSIONS
• Very interesting for research
• Not ready for production

20. QUESTIONS?
Senin Roman