tsconfig.base.json

{
  "compilerOptions": {
    "module": "esnext",
    "target": "esnext",
    "baseUrl": ".",
    "checkJs": true,
    "allowJs": true,

    "noEmitOnError": true,

    "lib": [
      "esnext",
      "dom"
    ],

    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true
  }
}