tsconfig.base.json

{
  "compilerOptions": {
    "module": "esnext",
    // use Node's module resolution algorithm, instead of the legacy TS one
    "target": "ES2015",
    "moduleResolution": "node",
    // stricter type-checking for stronger correctness. Recommended by TS
    "strict": 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,
    "importHelpers": true,
    // output .js.map sourcemap files for consumers
    "sourceMap": true,
    // 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,

    // ESBuild
    "isolatedModules": true,
    // interop between ESM and CJS modules. Recommended by TS
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true
  }
}