tsconfig.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": false,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "alwaysStrict": true,
    "declaration": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "module": "commonjs",
    "newLine": "lf",
    "noErrorTruncation": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitUseStrict": false,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "baseUrl": "src/",
    "outDir": "dist/",
    "pretty": true,
    "lib": ["esnext", "dom", "dom.iterable"],
    "skipLibCheck": true,
    "strict": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "target": "es2015"
  },
  "include": ["src/*.ts"],
  "exclude": ["tmp/"]
}