Define global constants in Vite source with the define option (compile-time replacement)

domain: vite.dev · 4 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. In vite.config add define with JSON-serializable values, e.g. define: { __APP_VERSION__: JSON.stringify('v1.0.0') }.
  2. Reference the constant in code as __APP_VERSION__; it becomes a global in dev and is statically replaced at build.
  3. Add type declarations in vite-env.d.ts (declare const __APP_VERSION__) for TS IntelliSense.
  4. Values must be JSON-serializable (null/bool/number/string/array/object) or a single identifier; non-strings are JSON.stringify'd.

Known gotchas

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