React Query Hook Builder

A powerful tool to streamline your React Query development workflow. It automates the generation of type-safe hooks, API functions, query keys, and TypeScript types directly from OpenAPI specifications or manual inputs.

Available as both a VS Code Extension and an npm package for programmatic use.

Installation

VS Code Extension

Install from the VS Code Marketplace

npm Package

npm install react-query-hook-builder
# or
yarn add react-query-hook-builder

Features

🚀 OpenAPI / Swagger Support

• Import from URL or JSON: Easily load your API specification by providing a URL or pasting the JSON content directly.
• Batch Generation: Select multiple API endpoints at once to generate hooks in bulk.
• Smart Detection:
  • Automatically maps GET requests to useQuery.
  • Maps POST, PUT, DELETE to useMutation.
  • Pagination Support: Detects paginated responses (e.g., fields like totalRecords) and generates useInfiniteQuery with mostly complete getNextPageParam logic.
• Type Generation: Generates comprehensive TypeScript interfaces for:
  • Request Variables: Parameters (path/query) and request bodies.
  • Response Models: Strongly typed response objects, handling deeply nested structures and extracting cleaner names (e.g., UserData vs generic Response).

🛠️ Manual Hook Generation

• Generate Hook from Specs: Don't have an OpenAPI spec? No problem.
  • Interactively provide the Feature Name, API URL, and HTTP Method.
  • Paste an example JSON response to automatically infer and generate TypeScript interfaces.

📦 Modular Code Generation

The extension generates four distinct parts for each hook, which can be placed in separate files or combined as needed:

1. Models/Types: TypeScript interfaces for the API response and variables.
2. API Function: An axios-based async function to make the network request.
3. Query Keys: A standardized factory object for React Query keys (supporting easy invalidation and scoping).
4. Hook: The custom React hook (useUser, useCreateUser, etc.) wrapping the React Query logic.

⚡ Developer Experience

• Append to Files: Seamlessly append generated code to existing standard files (e.g., adding a new type to types.ts or a new hook to useHooks.ts).
• History Support: Remembers your recently used OpenAPI URLs for quick access.
• Formatting: Automatically formats generated code using a built-in Prettier implementation to match standard style guides.

Usage

VS Code Extension

Method 1: Generate from OpenAPI (Recommended)

1. Open the Command Palette (Cmd+Shift+P or Ctrl+Shift+P).
2. Run "React Query Hook Builder: Generate Hook from OpenAPI Spec".
3. Source: Select "Enter new OpenAPI Spec URL or JSON content" (or pick from history).
4. Select Endpoints: Choose one or more operations from the list.
5. Destination: For each component (Models, API, Keys, Hooks), choose to:
   • Select an existing file to append to.
   • Create a new file.
   • (The extension will remember your last used file for faster re-runs).

Method 2: Generate from Manual Specs

1. Open the Command Palette.
2. Run "React Query Hook Builder: Generate Hook from specs".
3. Follow the prompts:
   • Feature Name: e.g., TodoList.
   • Method: GET, POST, etc.
   • API URL: e.g., /api/todos.
   • Example Response: Paste a JSON sample from your backend to generate types.

npm Package (Programmatic Usage)

import { generateFiles, parseOpenApiSpec, formatCode } from 'react-query-hook-builder';

// Example 1: Generate from manual specs
const result = await generateFiles({
    featureName: 'getUserList',
    methodType: 'GET',
    apiUrl: '/api/users',
    exampleResponse: JSON.stringify({ users: [], total: 0 }),
    params: '',
    hookType: 'useQuery'
});

console.log(result.model);      // TypeScript interfaces
console.log(result.api);        // API function
console.log(result.queryKey);   // Query key factory
console.log(result.hook);       // React Query hook

// Example 2: Generate from OpenAPI spec
const openApiSpec = await parseOpenApiSpec('https://api.example.com/openapi.json');
// Process spec and generate hooks for specific operations

// Example 3: Format generated code
const formatted = await formatCode(result.hook, '/path/to/workspace');

API Reference

generateFiles(props: GenerateFilesProps): Promise<GenerateFileResponse>

Generates all parts (model, api, queryKey, hook) for a single endpoint.

Parameters:

• featureName: string - Name of the feature (e.g., 'getUserList')
• methodType: 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH'
• apiUrl: string - API endpoint URL
• exampleResponse: string - JSON string of example response
• params: string - JSON string of params/payload
• hookType: 'useQuery' | 'useMutation' | 'useInfiniteQuery'
• responseSchema?: string - Optional response schema
• paramsSchema?: string - Optional params schema

Returns: Object with model, api, queryKey, and hook strings

parseOpenApiSpec(urlOrContent: string): Promise<OpenAPI.Document>

Parses an OpenAPI specification from URL or JSON string.

formatCode(code: string, workspacePath?: string): Promise<string>

Formats TypeScript code using Prettier.

Requirements

• VS Code ^1.90.0
• A project using react-query (TanStack Query) and axios. generated code assumes standard axios and react-query imports.

Extension Settings

This extension currently does not contribute any global settings. It relies on interaction during generation to determine file paths.

Known Issues

• The extension assumes a standard response wrapper pattern (e.g. { data: T, success: boolean }) for some heuristic optimizations, but generally supports standard OpenAPI schemas.
• Automatic import resolution is currently disabled; you may need to add imports (e.g., import { useQuery } from '@tanstack/react-query') to your files manually if they are not already present.

Enjoy faster React Query development!