endpoint-plus-devtools

Vite companion DevTools panel and AST compiler integration for endpoint-plus.

Features

• 🔍 AST Project Scanning: Automatically scans your project's codebase (.ts, .tsx, .js, .jsx, .vue) at compile-time using the TypeScript Compiler API to index all outbound HTTP calls.
• 🌐 Interactive DevTools Overlay: Provides a visual browser dashboard to inspect, trigger, and debug active routes.
• ⚡ 1-Click TypeScript Type Generation: Captures live JSON responses from your backend and invokes quicktype-core to infer and write strongly-typed ambient interfaces (.d.ts) directly into your project.
• 🔒 Vite HMR Isolation: Temporarily unwatches the generated type declarations file from Vite's chokidar watcher to prevent recursive hot-module replacement (HMR) page reloads.
• 💻 Launch Editor Integration: Integrates with Node.js editor launchers to open VS Code, Cursor, or WebStorm directly to the specific line of code declaring the scanned API endpoint.

Installation

Install the devtools package as a development dependency:

pnpm add -D endpoint-plus-devtools

To enable automated TypeScript schema inference from live JSON responses, also install the optional peer dependency quicktype-core:

pnpm add -D quicktype-core

Configuration

Add the plugin to your vite.config.ts:

import { defineConfig } from 'vite';
import { endpointPlusDevtools } from 'endpoint-plus-devtools/vite';

export default defineConfig({
  plugins: [
    endpointPlusDevtools({
      // Enabled by default in development mode (vite serve)
      enabled: true,

      // Configuration for automated type-generation
      typegen: {
        // Output path for the generated ambient typescript declarations file
        outputFile: 'src/endpoint-types.d.ts',
      },
    }),
  ],
});

Options

| Option | Type | Default | Description | | :--- | :--- | :--- | :--- | | enabled | boolean | true | Set to false to disable the DevTools server and scanner entirely. | | base | string | "/__endpoint-plus-devtools" | The base HTTP path where the DevTools panel UI will be served. | | typegen.outputFile | string | "src/endpoint-types.d.ts" | Target file path (relative to the Vite project root) where generated types are written. |

How it Works

1. Codebase Scanning

When you run vite, the plugin scans your /src directory for matches of endpoint-plus API invocation syntax:

// The scanner registers: GET /api/users/:userId
api.get(`/api/users/${userId}`);

// The scanner registers: POST /api/submit
api.post('/api/submit', data);

It extracts the HTTP method, the path template (automatically parameterizing template literals), and maps it back to the original source file, line number, and column.

2. Interactive Route Panel

Open your browser and navigate to the dev server. The DevTools client is automatically injected into the page as a floating panel or can be accessed directly at http://localhost:5173/__endpoint-plus-devtools/. Here, you can review the route map and trigger request tests.

3. Real Response Type Gen

Once a request finishes, the DevTools capturing layer passes the JSON payload to the backend service. Clicking "Save" automatically:

1. Translates the JSON payload into TypeScript interfaces.
2. Derives semantic type names (e.g. GET /api/users/:id maps to GetUsersByIDResponse).
3. Appends the route type to the YwEndpoint.Routes interface block.
4. Writes the changes to the outputFile.

The generated types immediately light up your code editor with type-safety:

// TypeScript matches the path string and infers the correct return type
const users = await api.get('/api/users/123');
//    ^? User