Move to Per-environment APIs

::: tip Feedback Give us feedback at Environment API feedback discussion :::

Multiple APIs from ViteDevServer related to module graph and modules transforms have been moved to the DevEnvironment instances.

Affected scope: Vite Plugin Authors

::: warning Future Deprecation The Environment instance was first introduced at v6.0. The deprecation of server.moduleGraph and other methods that are now in environments is planned for a future major. We don't recommend moving away from server methods yet. To identify your usage, set these in your vite config.

future: {
  removeServerModuleGraph: 'warn',
  removeServerReloadModule: 'warn',
  removeServerPluginContainer: 'warn',
  removeServerHot: 'warn',
  removeServerTransformRequest: 'warn',
  removeServerWarmupRequest: 'warn',
}

:::

Motivation

In Vite v5 and before, a single Vite dev server always had two environments (client and ssr). The server.moduleGraph had mixed modules from both of these environments. Nodes were connected through clientImportedModules and ssrImportedModules lists (but a single importers list was maintained for each). A transformed module was represented by an id and a ssr boolean. This boolean needed to be passed to APIs, for example server.moduleGraph.getModuleByUrl(url, ssr) and server.transformRequest(url, { ssr }).

In Vite v6, it is now possible to create any number of custom environments (client, ssr, edge, etc). A single ssr boolean isn't enough anymore. Instead of changing the APIs to be of the form server.transformRequest(url, { environment }), we moved these methods to the environment instance allowing them to be called without a Vite dev server.

Migration Guide

server.moduleGraph -> environment.moduleGraph
server.reloadModule(module) -> environment.reloadModule(module)
server.pluginContainer -> environment.pluginContainer
server.transformRequest(url, ssr) -> environment.transformRequest(url)
server.warmupRequest(url, ssr) -> environment.warmupRequest(url)
server.hot -> server.client.environment.hot