tsconfig.json

{
  "include": ["src/**/*"],
  "exclude": ["./dist/**/*"],
  "compilerOptions": {
    /* Paths */
    "outDir": "./dist/dts",
    "typeRoots": ["./node_modules/@types", "./type-definitions"],

    /* Project */
    "target": "ESNext", // TypeScript is not used for building, allow all modern features
    "module": "ESNext", // TypeScript is not used for building, allow all modern features
    "jsx": "react",

    /* Build */
    // `tsc` only used to build type declaration files (`.d.ts`)
    "declaration": true,
    "declarationMap": true, // Allow jumping to source file instead of 'd.ts' file

    /* Imports */
    "moduleResolution": "node", // Yup, we are using Node
    "forceConsistentCasingInFileNames": true, // Error out if import and file system have a casing mismatch. Recommended by TS.
    "esModuleInterop": true, // Improve importing from CJS modules, recommended by TS: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-7.html#support-for-import-d-from-cjs-from-commonjs-modules-with---esmoduleinterop
    "skipLibCheck": true, // Significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS.
    "resolveJsonModule": true, // Allow importing .json files

    /* Additional */
    "strict": true // Of course!
  }
}