axios-userscript-adapter

axios-userscript-adapter

An adapter for axios to make ajax calls within UserScript via the GM.xmlHttpRequest function as provided by the Greasemonkey and Tampermonkey WebExtensions for Firefox and Chromium-based browsers.

Synopsis

// ==UserScript==
// @name        new user script
// @namespace   https://trim21.me/
// @description hello
// @version     0.0.1
// @author      Trim21 <[e-mail]>
// @match       http*://*/*
// @require     https://cdn.jsdelivr.net/npm/axios@v1.0.0-alpha.1/dist/axios.min.js
// @require     https://cdn.jsdelivr.net/npm/axios-userscript-adapter@0.2.0-alpha.2
// @grant       GM.xmlHttpRequest
// @run-at      document-end
// @connect     httpbin.org
// ==/UserScript==

console.log(axios.defaults.adapter);
axios.defaults.adapter = axiosGmxhrAdapter;

axios.get("https://httpbin.org/headers").then((res) => console.log(res.data));

Description

The axios documentation describes axios adapters as modules that handle dispatching a request and settling a returned Promise once a response is received. The standard axios distribution includes adapters for the browser via xmlHttpRequest, and node.js via http and https.

Custom adapters are typically used for 'mocking' requests for testing purposes, such as axios-mock-adapter.

axios-userscript-adapter is specifically for using axios in the browser.

Chiefly, in userscript where the xmlHttpRequest function for making ajax requests is replaced with GM.xmlHttpRequest. GM.xmlHttpRequest is a privileged function available within the Greasemonkey and Tampermonkey webextensions that allow userscripts to make ajax requests that cross same origin policy boundaries. In other words, using axios, the userscript can make http requests to sites that didn't originate from the currently loaded web page. Read the GM.xmlHttpRequest function wiki page for further details.

After assigning axios-userscript-adapter as the default adapter:

var axios = require("axios");
var adapter = require("axios-userscript-adapter");

axios.defaults.adapter = adapter;

all the usual axios goodness is available within your userscript.

Requirements

axios-userscript-adapter requires axios 0.21.0 or higher

add // @grant GM.xmlHttpRequest to your userscript metadata

If you are using older version, you may grant GM_xmlhttpRequest

Installation:

npm install axios axios-userscript-adapter

Further Examples

As previously shown, you can set axios-userscript-adapter as the default adapter, in which case, all axios requests will be dispatched via GM.xmlHttpRequest. However, you can instead specify the adapter on individual requests via a config object.

console.log(axios.defaults.adapter);
axios.defaults.adapter = axiosGmxhrAdapter;

axios.get("https://httpbin.org/headers");

Example with webpack:

var axios = require("axios");
var adapter = require("axios-userscript-adapter");

// Send a POST request using GM.xmlHttpRequest
axios({
  method: "post",
  url: "https://www.different-server.com/user/12345",
  data: {
    firstName: "Fred",
    lastName: "Flintstone",
  },
  adapter: adapter,
});

or via any requests made by an instance:

var axios = require("axios");
var adapter = require("axios-userscript-adapter");

var instance = axios.create({
  // `url` is the server URL that will be used for the request
  url: "https://www.different-server.com/user",

  // `method` is the request method to be used when making the request
  method: "post",

  // `adapter` allows custom handling of requests which makes testing easier.
  // Return a promise and supply a valid response.
  adapter: adapter,
});

// Send a POST request using GM.xmlHttpRequest
instance.request({
  data: {
    firstName: "Fred",
    lastName: "Flintstone",
  },
});

esm is also supported:

import adapter from "axios-userscript-adapter";

thanks

axios-userscript-adapter is forked from axios-gmxhr-adapter

Licence

MIT