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fetch-ponyfill

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fetch-ponyfill

A ponyfill (doesn't overwrite the native fetch) for the Fetch specification https://fetch.spec.whatwg.org.

7.1.0
latest
Source
npm
Version published
Weekly downloads
492K
37.69%
Maintainers
1
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Created

What is fetch-ponyfill?

The fetch-ponyfill npm package provides a ponyfill for the Fetch API, which means it offers a way to use the Fetch API in environments where it is not natively available, such as older browsers or Node.js. Unlike a polyfill, a ponyfill does not modify the global environment but instead provides the functionality as a module.

What are fetch-ponyfill's main functionalities?

Basic Fetch Request

This code demonstrates how to perform a basic fetch request using fetch-ponyfill. It fetches data from a placeholder API and logs the response.

const fetch = require('fetch-ponyfill')().fetch;

fetch('https://jsonplaceholder.typicode.com/posts/1')
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

Custom Headers

This code demonstrates how to make a POST request with custom headers using fetch-ponyfill. It sends a JSON payload to the server and logs the response.

const fetch = require('fetch-ponyfill')().fetch;

fetch('https://jsonplaceholder.typicode.com/posts', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer token'
  },
  body: JSON.stringify({ title: 'foo', body: 'bar', userId: 1 })
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

Handling Errors

This code demonstrates how to handle errors in fetch requests using fetch-ponyfill. It checks if the response is not ok and throws an error if the fetch fails.

const fetch = require('fetch-ponyfill')().fetch;

fetch('https://jsonplaceholder.typicode.com/invalid-url')
  .then(response => {
    if (!response.ok) {
      throw new Error('Network response was not ok ' + response.statusText);
    }
    return response.json();
  })
  .then(data => console.log(data))
  .catch(error => console.error('Fetch error:', error));

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Keywords

fetch

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Package last updated on 19 Jan 2021

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