Function defineConfig

packages/vite/src/node/config.ts:188–190

(config: UserConfigExport)

export function defineConfig(config: UserConfigFn): UserConfigFn
export function defineConfig(config: UserConfigExport): UserConfigExport
export function defineConfig(config: UserConfigExport): UserConfigExport {
  return config
}

export interface CreateDevEnvironmentContext {
  ws: WebSocketServer