.env.local.production

The file .env.local.production is a non-standard filename that will cause configuration issues because it conflicts with the established, framework-specific loading order. In practice, the correct approach depends on your specific framework, but a general rule is to rely on the documented file hierarchy.

Add your targeted staging or local production keys. Remember to use the NEXT_PUBLIC_ prefix only for variables that must be exposed to the browser. .env.local.production

When developing an app, running npm run dev executes a development server. Development servers operate differently than production builds: they do not optimize code, they handle fast-refreshing, and they often use mock data or local staging APIs. The file