tsconfig.json

{
  "compilerOptions": {
    "target": "ESNEXT",
    "module": "es2015",
    "moduleResolution": "node",
    "jsx": "preserve",
    "noEmit": true,
    "strict": true,
    // @TODO: It's mandatory to disable this strict check at the moment
    // otherwise we have to type every import we do. The migration is an
    // incremental process so it happens that we import JavaScript module
    // from TypeScript one. The compiler always translates those imports
    // as impliciy any.
    "noImplicitAny": false,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "allowSyntheticDefaultImports": true
  }
}