ts-fastify-client is a simple client for Zod and Typebox schema based api using:

• Fully written in TypeScript
• Native Zod support
• Native Typebox support
• axios (more http client supported soon) as a http client

Table of Contents:

• Installation
• Usage

Installation

To get started, install ts-fastify-client using npm or yarn:

npm install ts-fastify-client
# or
yarn add ts-fastify-client

Usage with Zod

Route definitions and api calls

import { loadRouteDefinitions, createRouteDefinition, z } from 'ts-fastify-client';

const definitions = {
  getUser: createRouteDefinition({
    method: 'GET',
    // Id parameter is dynamicaly injected in the final url.
    url: `/user/:id`,
    schema: {
      params: z.object({
        id: z.string(),
      }),
      response: {
        200: z.array(
          z.object({
            name: z.string(),
            age: z.number(),
          })
        ),
      },
    },
  }),
};

const [createClient, schemas] = loadRouteDefinitions(definitions);

// fastify
server.get('/user', { schema: schemas.getUser }, async (request, response) => {
  response.status(200).send([{ name: 'John', age: 30 }]);
});

// client
const apiClient = createClient(axios.create({ baseURL: 'localhost' }));

async () => {
  const user = await apiClient.getUser({ params: { id: 'my-user-id' } }).call();
  // { name: 'John', age: 30 }
};

Inject URL params

ts-fastify-client use the /my-url/:my-param syntax to inject given parameters in the final url.

Access the final URL

Sometime, instead of calling the client method you will want to get the computed url. It's usefull to use it as a link href for instance.

const url = await apiClient.getUser({ params: { id: 'my-user-id' } }).url;
// https://localhost/user/my-user-id

Usage with Typebox

Route definitions and api calls

import { loadRouteDefinitions, createRouteDefinition, Type } from 'ts-fastify-client';

const definitions = {
  getUser: createRouteDefinition({
    method: 'GET',
    // Id parameter is dynamicaly injected in the final url.
    url: `/user/:id`,
    schema: {
      params: Type.Object({
        id: Type.String(),
      }),
      response: {
        200: Type.Array(
          Type.Object({
            name: Type.String(),
            age: Type.Number(),
          })
        ),
      },
    },
  }),
};

const [createClient, schemas] = loadRouteDefinitions(definitions);

// fastify
server.get('/user', { schema: schemas.getUser }, async (request, response) => {
  response.status(200).send([{ name: 'John', age: 30 }]);
});

// client
const apiClient = createClient(axios.create({ baseURL: 'localhost' }));

async () => {
  const user = await apiClient.getUser({ params: { id: 'my-user-id' } }).call();
  // { name: 'John', age: 30 }
};

Inject URL params

ts-fastify-client use the /my-url/:my-param syntax to inject given parameters in the final url.

Access the final URL

Sometime, instead of calling the client method you will want to get the computed url. It's usefull to use it as a link href for instance.

const url = await apiClient.getUser({ params: { id: 'my-user-id' } }).url;
// https://localhost/user/my-user-id

That's it! You can now use ts-fastify-client to create fully typed and safe api client.