+mode
Vike's +mode setting is just an alias for Vite's mode setting.
You can set it over Vike's CLI:
$ vike build --mode stagingOr over the VIKE_CONFIG environment variable:
$ VIKE_CONFIG="{mode:'staging'}" vike buildBoth are equivalent to setting Vite's mode setting:
$ vite build --mode stagingUnlike most Vike settings,
+modecan't be defined inside a+config.jsfile (Vike emits a warning if you try). Set it over the CLI, theVIKE_CONFIGenvironment variable,vite.config.js, or Vike's API instead.