The package root imports node:fs, node:path and koffi through the single-file
store, so esbuild platform=browser fails on it. src/browser.ts is the root
surface minus that store; src/index.ts re-exports it and adds the store, so
the Node entry is unchanged. Exposed as ./browser and as the 'browser' export
condition on the root.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>