tsconfig.json

{
  "include": [
    "src/**/*",
    "rollup.config.dev.ts",
    "rollup.config.prod.ts"
  ],
  "compilerOptions": {
    "target": "ES2022",
    "module": "ES2022",
    // use Node's module resolution algorithm, instead of the legacy TS one
    "moduleResolution": "node",
    "noEmitOnError": true,
    "lib": [
      "dom",
      "ES2022"
    ],
    "importHelpers": true,
    // output .d.ts declaration files for consumers
    "declaration": true,
    // match output dir to input dir. e.g. dist/index instead of dist/src/index
    "outDir": "./dist",
    // stricter type-checking for stronger correctness. Recommended by TS
    "strict": true,
    // linter checks for common issues
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    // interop between ESM and CJS modules. Recommended by TS
    "esModuleInterop": false,
    // 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,
    // `tsdx build` ignores this option, but it is commonly used when type-checking separately with `tsc`
    // "noEmit": true, /* Don not emit outputs. */
    "allowSyntheticDefaultImports": true
  }
}