TypeScript

[m-mohr]

Add typescript annotations to the JS client.

Resources:

• https://video.fosdem.org/2020/H.1302/typescript.mp4

[m-mohr]

Maybe we can generate it from JSDoc:

• https://voxpelli.com/2019/10/use-type-script-3-7-to-generate/
• https://dev.to/open-wc/generating-typescript-definition-files-from-javascript-5bp2
• https://github.com/otris/jsdoc-tsd

[m-mohr]

Somwhat blocking: microsoft/TypeScript#40901
Will be fixed by: microsoft/TypeScript#40912