tsconfig.json

{
  "compilerOptions": {
    // "allowSyntheticDefaultImports": true,
    "baseUrl": "./",
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    // "isolatedModules": true,
    "lib": [
      "dom",
      "ES2020"
    ],
    "module": "ESNext",
    "moduleResolution": "node",
    "newLine": "LF",
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    // "noImplicitReturns": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "outDir": "./build",
    "rootDir": "./",
    "skipLibCheck": true,
    "sourceMap": true,
    "strict": true,
    "target": "es2016",
    "typeRoots": [
      "./node_modules/@types",
    ]
  },
  "exclude": [
    ".git",
    "node_modules"
  ],
  "include": [
    "./src/**/*",
    "webpack.config.js",
    "node_modules/lit-scss-loader/types.d.ts"
  ]
}