Patch Changes
ec1b708026c1578e1c1f6c7bd90be18b26f7ce85#4695 Thanks @gesposito! - perf: evaluateNODE_ENVonce at module scope in the env-agnostic esm bundles (dist/<pkg>.esm.jsanddist/<pkg>.mjs) instead of at every__DEV__call site.process.envis an exotic object in Node, so each check performed a real environment lookup on hot paths; consumers that execute these files as-is (Node ESM, vitest, SSR) see roughly 10x faster observable writes in dev mode. All env-set artifacts and bundler output are unchanged.