Elm Town 43 - It Just Goes On and On

Keith Lazuka and AJ Alt from Microsoft share their experience writing the amazing Elm language support package for the IntelliJ family of integrated development environments. Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 23 February 2019 Guests Keith Lazuka (@klazuka) AJ Alt (@ajalt on Medium) Show Notes 00:00:00 Introduction 00:01:37 Guest intro intellij-elm elm-hot 00:02:45 Project beginnings 00:07:10 About IntelliJ 00:08:04 Elm at Microsoft 00:09:20 Writing IntelliJ plugins with Kotlin 00:13:34 Parsing Elm to produce an Abstract Syntax Tree (AST) 00:16:22 So many features! 00:18:56 Type inference 00:19:55 How do you decide what features to build? 00:20:44 Tidying up dead code and imports since Elm 0.19 00:23:03 Supporting both Elm 0.18 and Elm 0.19 00:27:25 Parsing partial Elm programs with errors 00:30:38 Language servers and multi-editor support 00:32:57 Saving on scrolling 00:34:28 Effortless refactoring 00:36:19 Extensible records 00:37:43 Test-driven development & BNF grammar 00:38:39 How do you split work? 00:40:42 Outro