Enable EMBER_TYPESCRIPT_BLUEPRINTS feature

[bertdeblock]

Currently, this feature is turned off and users need to explicitly run EMBER_TYPESCRIPT_BLUEPRINTS=true ember g ... to generate TS files. This can be confusing when people also set "isTypeScriptProject": true in their .ember-cli file.
This issue serves as a reminder to enable this feature or to determine what's needed to enable it.

/cc @chriskrycho

[chriskrycho]

@bertdeblock is this still the case? I don't remember where this landed!

[bertdeblock]

@chriskrycho Yup, to enable TS blueprints by default (based on the isTypeScriptProject value of course) we need to enable this flag.

[chriskrycho]

Thanks for clarifying. Do you happen to know if that's the only thing we're blocked on (you've been way more closely involved in the implementation than I have 🙏🏼😅)? If so, I'll bring it up at the next Framework meeting as well as discuss it async with the Typed Ember team and we can see about a path to turning on that flag!

[bertdeblock]

AFAIK, that's the only remaining thing to do, to have TS blueprints just work indeed.