runtime-env

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Vite preview ​

vite preview is useful for verification before deployment.

What it does during preview ​

  • generates runtime-env.js when the preview server starts,
  • interpolates built HTML when the preview server starts,
  • keeps preview behavior close to runtime expectations without mutating source setup.

Restart the preview server after changing .env files or the schema.

Preview is for verification, not a real production runtime.