Conversion to TypeScript was completed ~4/19/2022.
Implementation and porting is progressing.
Very little code has been directly portable from Java, due to PhET-iO architectural requirements. But the Java implementation has been useful for informing the TypeScript implementation, especially for the model.
This epic was started in Q2 2022. I'm retroactively creating this issue, so it can be linked to the Quartly Planning project board.
Features to be included: