tsconfig.json

{
  // see https://www.typescriptlang.org/tsconfig to better understand tsconfigs
  // "include": ["**/*.mjs"],
  "compilerOptions": {
    "module": "node16",
    //got from here: https://stackoverflow.com/questions/61305578/what-typescript-configuration-produces-output-closest-to-node-js-14-capabilities/61305579#61305579
    "target": "ES2020",
    "lib": ["ES2020"],
    "allowJs": true,
    "checkJs": true,
    "importHelpers": true,
    // output .d.ts declaration files for consumers
    // "declaration": true,
    // output .js.map sourcemap files for consumers
    // "sourceMap": true,
    // match output dir to input dir. e.g. dist/index instead of dist/src/index
    // "rootDir": "./",
    // stricter type-checking for stronger correctness. Recommended by TS
    "strict": true,
    "useUnknownInCatchVariables": false,
    // linter checks for common issues
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    // noUnused* overlap with @typescript-eslint/no-unused-vars, can disable if duplicative
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    // use Node's module resolution algorithm, instead of the legacy TS one
    //"moduleResolution": "node",
    // interop between ESM and CJS modules. Recommended by TS
    "esModuleInterop": true,
    // significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS
    "skipLibCheck": true,
    // error out if import and file system have a casing mismatch. Recommended by TS
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    // "emitDeclarationOnly": true,
    "jsx": "react"
  }
}