tsconfig.base.json

{
  "compilerOptions": {
    "allowJs": true,
    "skipLibCheck": true,

    /* Strict Type-Checking Options */
    "strict": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,

    /* Additional Checks */
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,
    "isolatedModules": true,

    /* Module Resolution Options */
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,

    /* Advanced Options */
    "resolveJsonModule": true,
    "preserveWatchOutput": true
  }
}