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OpenAPI Specification

openapi: 3.1.0
info:
  title: Vite JavaScript Dev Server Hot Module Replacement API
  description: The Vite JavaScript API provides a fully-typed programmatic interface for embedding Vite into build toolchains, frameworks, and custom CLI tools. Functions include creating a dev server, triggering production builds, launching preview servers, resolving configuration, and transforming source files using Oxc or esbuild.
  version: 6.0.0
  contact:
    name: Vite Team
    url: https://vitejs.dev
  license:
    name: MIT
    url: https://github.com/vitejs/vite/blob/main/LICENSE
servers:
- url: http://localhost:5173
  description: Vite Development Server (default port)
- url: http://localhost:4173
  description: Vite Preview Server (default port)
tags:
- name: Hot Module Replacement
  description: HMR-related plugin capabilities
paths:
  /__hmr/update:
    post:
      operationId: triggerHmrUpdate
      summary: Trigger HMR Update
      description: Internal endpoint used by the Vite HMR system to notify the client about module updates.
      tags:
      - Hot Module Replacement
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/HmrUpdate'
      responses:
        '200':
          description: HMR update dispatched
  /__hmr/full-reload:
    post:
      operationId: triggerFullReload
      summary: Trigger Full Page Reload
      description: Forces a full browser reload when HMR cannot patch a module in-place.
      tags:
      - Hot Module Replacement
      responses:
        '200':
          description: Full reload triggered
components:
  schemas:
    ModuleUpdate:
      type: object
      description: Individual module update in an HMR payload.
      required:
      - type
      - path
      - timestamp
      properties:
        type:
          type: string
          enum:
          - js-update
          - css-update
          description: Module type being updated.
        path:
          type: string
          description: Module path as served by Vite.
        acceptedPath:
          type: string
          description: The accepted module path (may differ from updated path).
        timestamp:
          type: integer
          description: Timestamp for cache busting.
    HmrUpdate:
      type: object
      description: HMR update payload sent from the server to the browser client.
      required:
      - type
      - updates
      properties:
        type:
          type: string
          enum:
          - update
          - full-reload
          - prune
          - error
          description: Type of HMR event.
        updates:
          type: array
          items:
            $ref: '#/components/schemas/ModuleUpdate'
          description: List of module updates.
externalDocs:
  description: Official Vite JavaScript API Documentation
  url: https://vite.dev/guide/api-javascript