tsconfig.json

{
  "compilerOptions": {
    // Output target & module type
    "target": "es5",
    "module": "commonjs",

    // Source maps & declarations
    "sourceMap": true,
    "declaration": true,
    // "declarationMap": true,

    // Module resolution
    "moduleResolution": "node",
    "allowJs": false,
    "resolveJsonModule": false,
    "preserveSymlinks": false,

    // Compiler message formatting, error handling
    "preserveWatchOutput": true,
    "pretty": true,
    "noErrorTruncation": true,
    "noEmitOnError": true,

    // Remove comments & @internal
    "removeComments": true,
    "stripInternal": false,
    "noImplicitUseStrict": false,

    // Strictness settings
    "noImplicitAny": true,
    "noImplicitReturns": false,
    "noImplicitThis": false,
    "strict": true,
    "noStrictGenericChecks": false,
    "strictPropertyInitialization": true,
    "strictNullChecks": true,
    "strictFunctionTypes": false,
    "suppressImplicitAnyIndexErrors": false,
    "suppressExcessPropertyErrors": false,

    // Module interoperability
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,

    // JSX
    "jsx": "react",
    "jsxFactory": "React.createElement",
    // "reactNamespace": ""

    // Decorators
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,

    // Should helpers be included via tslib
    "importHelpers": true,
    "noEmitHelpers": false,

    // Typings import
    // "typeRoots": [],
    // "types": [],

    // Default libraries to include (DOM and esnext basically assume a complete environment,
    // leaving you with the responsibility to polyfill)
    "lib": ["dom", "esnext"],
    "skipLibCheck": false,

    // Other settings
    "downlevelIteration": true,
    "forceConsistentCasingInFileNames": true,
    "keyofStringsOnly": false,
    "noFallthroughCasesInSwitch": true,
    "noResolve": false,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "preserveConstEnums": false
  }
}