Function configureServer

examples/ts-vue-chat/vite.config.ts:192–301

(server)

    {
      name: 'api-handler',
      configureServer(server) {
        server.middlewares.use('/api/chat', async (req, res) => {
          if (req.method !== 'POST') {
            res.statusCode = 405
            res.end('Method Not Allowed')
            return
          }

          let body = ''
          for await (const chunk of req) {
            body += chunk
          }

          let params
          try {
            params = await chatParamsFromRequestBody(JSON.parse(body))
          } catch (error) {
            res.statusCode = 400
            res.end(error instanceof Error ? error.message : 'Bad request')
            return
          }

          try {
            const fp = params.forwardedProps as Record<string, unknown>
            const provider: Provider =
              typeof fp.provider === 'string'
                ? (fp.provider as Provider)
                : 'openai'
            const model: string | undefined =
              typeof fp.model === 'string' ? fp.model : undefined

            let adapter

            let selectedModel: string

            switch (provider) {
              case 'anthropic':
                selectedModel = model || 'claude-sonnet-4-5-20250929'
                adapter = anthropicText(selectedModel)
                break
              case 'gemini':
                selectedModel = model || 'gemini-2.5-flash'
                adapter = geminiText(selectedModel)
                break
              case 'ollama':
                selectedModel = model || 'mistral:7b'
                adapter = ollamaText(selectedModel)
                break
              case 'openai':
              default:
                selectedModel = model || 'gpt-4o'
                adapter = openaiText(selectedModel)
                break
            }

            console.log(
              `[API] Using provider: ${provider}, model: ${selectedModel}`,
            )