ScalaJS and Typescript: an unlikely romance

on YouTube ↗38m

" summary

Claims that generating TypeScript declaration files from Scala.js source and emulating nominal types with phantom nominal tags removes DTS misrepresentations and the structural/nominal mismatch. Implements an sbt plugin proof‑of‑concept that emits interfaces, class constructors, unions, and newtypes for consumption by TypeScript; uses shapeless and generated tag fields to force nominal checks. Works on a real client/server project but currently yields read‑only APIs, lacks generic constraints and full variance, and needs a two‑pass or compiler‑integration future.

AI-written summary · about

" chapters (6)

1. 0:00Start
2. 1:15Features of Typescript
3. 3:03Conditional Types
4. 3:39Conditional Types
5. 5:12Map Types
6. 17:21We Emulate Nominal Types in Our Dts Definitions

" related talks

• 54mTypescript for the busy Java developerOrlando Valdez · Devnexus 2022
• 20mTypeScript and ES6Dan Wahlin, Andrew Connell · ng-conf 2015
• 38mUnderstanding TypeScript's Structural Type SystemDrew Colthorp · Strange Loop 2018
• 33mTypeScript - JavaScript you are gonna loveVitalii Bobrov · jsDay 2018
• 56mScala.js: Safety and Sanity in the Wild West of Web developmentLi Haoyi · Philly ETE 2015
• 41mReconstructing ScalaFelix Mulder · Scala Days Copenhagen 2017
• 40mTypeScript: State of the UnionJames Henry · Web Unleashed 2018
• 24mTypeScript and how I've learned to love the compilerFelix Rieseberg · Shift Dev 2019