tsconfig.build.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    // Let the build emit .d.ts only (tsup handles JS via esbuild)
    "noEmit": false,
    "declaration": true,
    "emitDeclarationOnly": true,
    "declarationMap": true,

    // Output structure
    "rootDir": "src",
    "outDir": "dist",

    // Keep bundler-friendly module settings
    "module": "Preserve",
    "moduleResolution": "bundler",
    "verbatimModuleSyntax": true,

    // Stricter for build
    "allowJs": false,
    "stripInternal": true,

    // tsup injects `baseUrl: "."` into the DTS compiler options
    // (see node_modules/tsup/dist/rollup.js), which TS 6 flags as deprecated.
    // Silence until tsup patches.
    "ignoreDeprecations": "6.0"
  },
  "include": ["src/**/*.ts"],
  "exclude": ["**/*.test.ts", "tests/**", "examples/**", "scripts/**", "coverage/**", "dist/**", "node_modules/**"]
}