:leafy_green: Rapini - OpenAPI to React Query (or SWR) & Axios

Rapini is a tool that generates React Query (or SWR) hooks, Axios requests and Typescript types, based on an OpenAPI spec file. The generated code is packaged conveniently so that it can be published as a package on any NPM registry.

Features

• :bicyclist: Generates axios calls for every endpoint, with typed payload.
• :golfing: Generates custom react hooks that use React Query's useQuery and useMutation hooks for each axios call. Optional to generate custom hooks that use SWR's useSWR hook.
• :rowboat: Generates query keys for every hook.
• :weight_lifting: Generates strong typescript types for all inputs, outputs, and options.

Getting Started

Rapini is a CLI tool so you can execute the remote npm package directly for convenience

npx rapini [library] [options]

eg:

# For React Query V3
npx rapini react-query -p path/to/openapi.yaml

# For TanStack Query 4
npx rapini react-query v4 -p path/to/openapi.yaml

# For TanStack Query 5
npx rapini react-query v5 -p path/to/openapi.yaml

# For SWR
npx rapini swr -p path/to/openapi.yaml

This will generate the package code based on an OpenAPI file at path/to/openapi.yaml. The outputted code will be packaged in a way to just publish it as your own NPM package and then import it in your React project.

CLI Arguments & Options

rapini help outputs the following:

Usage: rapini [options] [command]

Generate a package based on OpenAPI

Options:
  -V, --version                    output the version number
  -h, --help                       display help for command

Commands:
  react-query [options] [version]  Generate a Package for TanStack Query V4 or React Query V3
  swr [options]                    Generate a Package for SWR (stale-while-revalidate)
  help [command]                   display help for command

rapini help react-query outputs the following:

Usage: rapini react-query [options] [react-query-version]

Generate a Package for TanStack Query V4 or V5, or legacy React Query V3

Options:
  -p, --path <path>                          Path to OpenAPI file
  -n, --name [name]                          Name to use for the generated package (default: "rapini-generated-package")
  -pv, --package-version [version]           Semver version to use for the generated package (default: "1.0.0")
  -o, --output-dir [directory]               Directory to output the generated package (default: "rapini-generated-package")
  -b, --base-url [url]                       Prefix every request with this url
  -r, --replacer [oldString] [newString...]  Replace part(s) of any route's path with simple string replacements. Ex: `-r /api/v1 /api/v2` would replace the v1 with v2 in every route
  -h, --help                                 display help for command

rapini help swr outputs the following:

Usage: rapini swr [options]

Generate a Package for SWR (stale-while-revalidate)

Options:
  -p, --path <path>                          Path to OpenAPI file
  -n, --name [name]                          Name to use for the generated package (default: "rapini-generated-package")
  -pv, --package-version [version]           Semver version to use for the generated package (default: "1.0.0")
  -o, --output-dir [directory]               Directory to output the generated package (default: "rapini-generated-package")
  -b, --base-url [url]                       Prefix every request with this url
  -r, --replacer [oldString] [newString...]  Replace part(s) of any route's path with simple string replacements. Ex: `-r /api/v1 /api/v2` would replace the v1 with v2 in every route
  -h, --help                                 display help for command

Example Usage

Let's say you have an OpenAPI file that looks like this one.

Once you run the CLI tool to generate the React Query code, you can then cd into the generated directory, run npm install && npm run build then npm publish with your own package name to publish it to your own registry, then import and use it like this:

import { initialize } from "your-custom-package";
import { axiosInstance } from "./your-custom-axios-instance";

// Can even import the generated Typescript Types if needed
import type { Pet } from "your-custom-package";

const config = initialize(axiosInstance);

const { usePets } = config.queries;

const MyComponent = () => {
  const { data, isLoading, isError } = usePets();

  return (
    <ul>
      {data.pets.map((pet) => (
        <li key={pet.id}>{pet.name}</li>
      ))}
    </ul>
  );
};

You must call initialize(axiosInstance) with your custom axios instance. The return value from the initialize will give you an object with everything you need, here is the return value with examples:

import { queryKeys } from "generated-package";
// queryKeys = { pets: () => ['pets'] } ...

const rapini = initialize(axiosInstance);
rapini.queries; // { usePets, usePetById } ...
rapini.mutations; // { useUpdatePet, useDeletePet } ... if generated by SWR, there will be no property `mutations`
rapini.requests; // { pets: () => axios.get<Pet[]>(...) } ...

With Global Config

There may be times when you want extra functionality hooked into each hook's callbacks. You can do this normally by passing options to each hook, but if you want something more global - a config can be provided to the initialize function.

import { initialize, type Config } from "your-custom-package";
import type { QueryClient } from "react-query";

const config: Config = {
  mutations: {
    useCreatePet: (queryClient: QueryClient) => ({
      onSuccess: () => showSuccessNotification(),
      onError: () => showErrorNotification(),
    }),
  },
};

const rapini = initialize(axiosInstance, config);

Important Notes

• Every request must have an operationId defined. The operationId is used in many places in the final generated code.