It is not possible to use Relay with Typescript in CRA

[ivosabev]

I see two unresolvable issues:

There is a need for a babel configuration, due to the need of a single artifact directory

{
  "plugins": [["relay", { "artifactDirectory": "./src/__generated__" }]]
}

https://github.com/relay-tools/relay-compiler-language-typescript#relay-compiler

Typescript config clashes with CRA requirements for es5 and esnext:

{
  "compilerOptions": {
    "target": "es2015",
    "module": "es2015"
  }
}

https://github.com/relay-tools/relay-compiler-language-typescript#typescript

[alloy]

This should be addressed by #2646. For more info see relay-tools/relay-compiler-language-typescript#84.