initial generation fails

[eclipse-theia]

initial generation fails

[svenefftinge]

I think you need to install yarn: https://yarnpkg.com/en/docs/install

[svenefftinge]

Btw, for a language extension the easiest is to copy an existing a super simple language extension and just rename it. For instance the https://github.com/theia-ide/theia-ruby-extension only does the configuration and spawns a language server. :-)

[kuniss]

The yarn installation did the trick. Thanks, @svenefftinge.
I will close it.

BTW, does Xtext already have a LS which could be used in cd browser-example && yarn start --hostname 0.0.0.0 path/to/xtext? Or, did I misunderstood your comment?

[svenefftinge]

It doesn't have one yet. So first step would be to go for syntax and configuration, only.