tsconfig.base.json

{
    "compilerOptions": {
        "rootDir": ".",
        "target": "es6",
        "lib": ["esnext"],
        "allowJs": true,
        "pretty": true,
        "skipLibCheck": true,
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,
        "strict": true,
        "forceConsistentCasingInFileNames": false,
        "noFallthroughCasesInSwitch": true,
        "module": "commonjs",
        "moduleResolution": "node",
        "resolveJsonModule": true,
        "isolatedModules": true,
        "useUnknownInCatchVariables": false,
        "noUnusedLocals": true,
        "alwaysStrict": true,
        "noImplicitThis": true,
        "strictPropertyInitialization": false,
        "strictBindCallApply": true,
        "strictFunctionTypes": true,
        "strictNullChecks": true,
        "noImplicitAny": true,
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true
    }
}