tsconfig.json

{
  "compilerOptions": {
    "types": [
      "./types.d.ts", // add your own type definitions
      "@types/chrome",
      "@types/firefox-webext-browser"
    ],
    "baseUrl": "src",
    "paths": {
      "@docFillerCore/*": ["docFillerCore/*"],
      "@types/*": ["types/*"],
      "@utils/*": ["utils/*"]
    },

    // enable latest features
    "lib": ["esnext"],
    "module": "esnext",
    "target": "esnext",

    // if TS 5.x+
    "moduleResolution": "bundler",
    "noEmit": true,
    "allowImportingTsExtensions": true,
    "moduleDetection": "force",

    "jsx": "react-jsx", // support JSX
    "allowJs": true, // allow importing `.js` from `.ts`
    "esModuleInterop": true, // allow default imports for CommonJS modules

    // best practices
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "skipLibCheck": true,
    "noFallthroughCasesInSwitch": true,

    // Some stricter flags (disabled by default)
    "noUnusedLocals": false,
    "noUnusedParameters": true,
    "noPropertyAccessFromIndexSignature": true,
    "allowUnusedLabels": true,
    "allowUnreachableCode": false,
    "exactOptionalPropertyTypes": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noUncheckedIndexedAccess": true,

    "isolatedModules": true
    // "checkJs": true,
  },
  "exclude": [
    "node_modules",
    "dist",
    "build",
    "web-ext-artifacts",
    "docs",
    "tools"
  ]
}