*.d.ts in src/ are not copied to dist/?

[zackthehuman]

Hi. I have several interface/definition-only files in my src/ directory. They use the .d.ts extension so that they don't produce modules. When I build, however, they are not copied to the dist/types/ directory and so consumers break because type information is missing.

Is it intended that *.d.ts files from the src/ directory are not copied along into dist?