tsconfig.json

{
  "compilerOptions": {
    "outDir": "dist",
    "target": "esnext",
    "module": "ESNext",
    "moduleResolution": "Node",
    "lib": ["es2020", "dom", "dom.iterable"],
    "typeRoots": ["node_modules/@types"],

    // strictness
    "strict": true,
    "alwaysStrict": true,
    "strictFunctionTypes": true,
    "allowJs": false,

    // no need for checking libs
    "skipLibCheck": true,
    "skipDefaultLibCheck": true,

    // important for Linux
    "forceConsistentCasingInFileNames": true,

    // linting
    "noImplicitAny": true,
    "noImplicitThis": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,

    // modules
    "resolveJsonModule": false, // causes problems by hoisting json files, and src to the root of the dist folder
    "esModuleInterop": true,
    "verbatimModuleSyntax": true,
    "allowSyntheticDefaultImports": true,
    "isolatedModules": true,

    // source maps & type maps
    "declaration": true,
    "sourceMap": true,

    // cache build outputs
    "incremental": true
  }
}