Typescript projects cannot update to new aegir

[vasco-santos]

• OS: *
• Version: 0.29.0 (or further)

When updating a typescript project to use aegir with typescript declaration files being generated on build time, typescript projects like https://github.com/ChainSafe/js-libp2p-gossipsub fail to build.

> libp2p-gossipsub@0.8.0 prebuild /Users/vsantos/work/gh/libp2p/gossipsub-js
> tsc


> libp2p-gossipsub@0.8.0 build /Users/vsantos/work/gh/libp2p/gossipsub-js
> aegir build

error TS18003: No inputs were found in config file '/Users/vsantos/work/gh/libp2p/gossipsub-js/tsconfig-types.aegir.json'. Specified 'include' paths were '["src","package.json"]' and 'exclude' paths were '["./src"]'.

This project has its own tsconfig file that seems to cause conflicts with aegir.

There are two possibilities here that I can see:

• Aegir supporting ts projects -- Support for typescript project #573
• Aegir supports ignoring the fact that a project has a tsconfig file with a flag

[hugomrdias]

They should just do npx aegir build --no-types since they build .d.ts in another way.
Also the TS cmds work nicer with custom configs in the latest versions.

Please re-open if you think more discussion is needed.