@straw-hat/fetcher

HTTP client, based on middleware pipeline.

Installation

yarn add @straw-hat/fetcher

Usage

• Reference guides Please use yarn docs:reference to generate the reference docs.

Creating the client

First we need to create an instance of the client.

This instance will have the middleware based on your needs (More about middleware later, keep reading).

For this example we will using baseUrl middleware.

Note

Check middlewares folder for the list of supported middleware. Suggestions for new middleware are open.

// myHttpClient.js
import { baseUrl } from '@straw-hat/fetcher/dist/middlewares/base-url';
import { json } from '@straw-hat/fetcher/dist/middlewares/json';
import { errorHandler } from '@straw-hat/fetcher/dist/middlewares/error-handler';
import { defaultHeaders } from '@straw-hat/fetcher/dist/middlewares/default-headers';
import { doNothing } from '@straw-hat/fetcher/dist/middlewares/do-nothing';
import { composeMiddleware } from '@straw-hat/fetcher/dist/middlewares/middleware';
import { fetcher } from '@straw-hat/fetcher';

export const client = fetcher({
  middleware: composeMiddleware(
    // Add default headers
    defaultHeaders({
      'User-Agent': 'MyApp/1.0',
    }),
    // Concatenate the base url with the current URL.
    baseUrl('http://api.myapp.com/v1'),
    // - Serialize body into JSON and add content type application/json
    // - Deserialize JSON responses
    json(),
    // Standard error handler from fetcher
    errorHandler(),
    // A middleware that does nothing, useful for noop default values thou
    doNothing
  ),
});

Notice that composeMiddleware takes a list of middleware as parameters and returns composed middleware for the client.

Now you can start using client 🎸🎉🎊.

Using the client

// This is where we exported our client from the previous example.
import client from './myHttpClient';

(async () => {
  const json = await client('/example.com').json();

  console.log(json);
  //=> `{data: 'Hola, Mundo 🌍'}`
})();

What is next?

• Middlewares
• Polyfills
• OpenAPI