# superagent [![build status](https://img.shields.io/travis/ladjs/superagent.svg)](https://travis-ci.org/ladjs/superagent) [![code coverage](https://img.shields.io/codecov/c/github/ladjs/superagent.svg)](https://codecov.io/gh/ladjs/superagent) [![code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg)](https://github.com/sindresorhus/xo) [![styled with prettier](https://img.shields.io/badge/styled_with-prettier-ff69b4.svg)](https://github.com/prettier/prettier) [![made with lass](https://img.shields.io/badge/made_with-lass-95CC28.svg)](https://lass.js.org) [![license](https://img.shields.io/github/license/ladjs/superagent.svg)](LICENSE) > Small progressive client-side HTTP request library, and Node.js module with the same API, supporting many high-level HTTP client features. Maintained for [Forward Email](https://github.com/forwardemail) and [Lad](https://github.com/ladjs). ## Table of Contents * [Install](#install) * [Usage](#usage) * [Node](#node) * [Browser](#browser) * [Supported Platforms](#supported-platforms) * [Required Browser Features](#required-browser-features) * [Plugins](#plugins) * [Upgrading from previous versions](#upgrading-from-previous-versions) * [Contributors](#contributors) * [License](#license) ## Install [npm][]: ```sh npm install superagent ``` [yarn][]: ```sh yarn add superagent ``` ## Usage ### Node ```js const superagent = require('superagent'); // callback superagent .post('/api/pet') .send({ name: 'Manny', species: 'cat' }) // sends a JSON post body .set('X-API-Key', 'foobar') .set('accept', 'json') .end((err, res) => { // Calling the end function will send the request }); // promise with then/catch superagent.post('/api/pet').then(console.log).catch(console.error); // promise with async/await (async () => { try { const res = await superagent.post('/api/pet'); console.log(res); } catch (err) { console.error(err); } })(); ``` ### Browser **The browser-ready, minified version of `superagent` is only 50 KB (minified and gzipped).** Browser-ready versions of this module are available via [jsdelivr][], [unpkg][], and also in the `node_modules/superagent/dist` folder in downloads of the `superagent` package. > Note that we also provide unminified versions with `.js` instead of `.min.js` file extensions. #### VanillaJS This is the solution for you if you're just using ` ``` #### Bundler If you are using [browserify][], [webpack][], [rollup][], or another bundler, then you can follow the same usage as [Node](#node) above. ## Supported Platforms * Node: v14.18.0+ * Browsers (see [.browserslistrc](.browserslistrc)): ```sh npx browserslist ``` ```sh and_chr 102 and_ff 101 and_qq 10.4 and_uc 12.12 android 101 chrome 103 chrome 102 chrome 101 chrome 100 edge 103 edge 102 edge 101 firefox 101 firefox 100 firefox 91 ios_saf 15.5 ios_saf 15.4 ios_saf 15.2-15.3 ios_saf 15.0-15.1 ios_saf 14.5-14.8 ios_saf 14.0-14.4 ios_saf 12.2-12.5 kaios 2.5 op_mini all op_mob 64 opera 86 opera 85 safari 15.5 safari 15.4 samsung 17.0 samsung 16.0 ``` ### Required Browser Features We recommend using (specifically with the bundle mentioned in [VanillaJS](#vanillajs) above): ```html ``` * WeakRef is not supported in Opera 85, iOS Safari 12.2-12.5 * BigInt is not supported in iOS Safari 12.2-12.5 ## Plugins SuperAgent is easily extended via plugins. ```js const nocache = require('superagent-no-cache'); const superagent = require('superagent'); const prefix = require('superagent-prefix')('/static'); superagent .get('/some-url') .query({ action: 'edit', city: 'London' }) // query string .use(prefix) // Prefixes *only* this request .use(nocache) // Prevents caching of *only* this request .end((err, res) => { // Do something }); ``` Existing plugins: * [superagent-no-cache](https://github.com/johntron/superagent-no-cache) - prevents caching by including Cache-Control header * [superagent-prefix](https://github.com/johntron/superagent-prefix) - prefixes absolute URLs (useful in test environment) * [superagent-suffix](https://github.com/timneutkens1/superagent-suffix) - suffix URLs with a given path * [superagent-mock](https://github.com/M6Web/superagent-mock) - simulate HTTP calls by returning data fixtures based on the requested URL * [superagent-mocker](https://github.com/shuvalov-anton/superagent-mocker) — simulate REST API * [superagent-cache](https://github.com/jpodwys/superagent-cache) - A global SuperAgent patch with built-in, flexible caching * [superagent-cache-plugin](https://github.com/jpodwys/superagent-cache-plugin) - A SuperAgent plugin with built-in, flexible caching * [superagent-jsonapify](https://github.com/alex94puchades/superagent-jsonapify) - A lightweight [json-api](http://jsonapi.org/format/) client addon for superagent * [superagent-serializer](https://github.com/zzarcon/superagent-serializer) - Converts server payload into different cases * [superagent-httpbackend](https://www.npmjs.com/package/superagent-httpbackend) - stub out requests using AngularJS' $httpBackend syntax * [superagent-throttle](https://github.com/leviwheatcroft/superagent-throttle) - queues and intelligently throttles requests * [superagent-charset](https://github.com/magicdawn/superagent-charset) - add charset support for node's SuperAgent * [superagent-verbose-errors](https://github.com/jcoreio/superagent-verbose-errors) - include response body in error messages for failed requests * [superagent-declare](https://github.com/damoclark/superagent-declare) - A simple [declarative](https://en.wikipedia.org/wiki/Declarative_programming) API for SuperAgent * [superagent-node-http-timings](https://github.com/webuniverseio/superagent-node-http-timings) - measure http timings in node.js * [superagent-cheerio](https://github.com/mmmmmrob/superagent-cheerio) - add [cheerio](https://www.npmjs.com/package/cheerio) to your response content automatically. Adds `res.$` for HTML and XML response bodies. * [@certible/superagent-aws-sign](https://github.com/certible/superagent-aws-sign) - Sign AWS endpoint requests, it uses the aws4 to authenticate the SuperAgent requests Please prefix your plugin with `superagent-*` so that it can easily be found by others. For SuperAgent extensions such as couchdb and oauth visit the [wiki](https://github.com/ladjs/superagent/wiki). ## Upgrading from previous versions Please see [GitHub releases page](https://github.com/ladjs/superagent/releases) for the current changelog. Our breaking changes are mostly in rarely used functionality and from stricter error handling. * [6.0 to 6.1](https://github.com/ladjs/superagent/releases/tag/v6.1.0) * Browser behaviour changed to match Node when serializing `application/x-www-form-urlencoded`, using `arrayFormat: 'indices'` semantics of `qs` library. (See: ) * [5.x to 6.x](https://github.com/ladjs/superagent/releases/tag/v6.0.0): * Retry behavior is still opt-in, however we now have a more fine-grained list of status codes and error codes that we retry against (see updated docs) * A specific issue with Content-Type matching not being case-insensitive is fixed * Set is now required for IE 9, see [Required Browser Features](#required-browser-features) for more insight * [4.x to 5.x](https://github.com/ladjs/superagent/releases/tag/v5.0.0): * We've implemented the build setup of [Lass](https://lass.js.org) to simplify our stack and linting * Unminified browserified build size has been reduced from 48KB to 20KB (via `tinyify` and the latest version of Babel using `@babel/preset-env` and `.browserslistrc`) * Linting support has been added using `caniuse-lite` and `eslint-plugin-compat` * We can now target what versions of Node we wish to support more easily using `.babelrc` * [3.x to 4.x](https://github.com/ladjs/superagent/releases/tag/v4.0.0-alpha.1): * Ensure you're running Node 6 or later. We've dropped support for Node 4. * We've started using ES6 and for compatibility with Internet Explorer you may need to use Babel. * We suggest migrating from `.end()` callbacks to `.then()` or `await`. * [2.x to 3.x](https://github.com/ladjs/superagent/releases/tag/v3.0.0): * Ensure you're running Node 4 or later. We've dropped support for Node 0.x. * Test code that calls `.send()` multiple times. Invalid calls to `.send()` will now throw instead of sending garbage. * [1.x to 2.x](https://github.com/ladjs/superagent/releases/tag/v2.0.0): * If you use `.parse()` in the *browser* version, rename it to `.serialize()`. * If you rely on `undefined` in query-string values being sent literally as the text "undefined", switch to checking for missing value instead. `?key=undefined` is now `?key` (without a value). * If you use `.then()` in Internet Explorer, ensure that you have a polyfill that adds a global `Promise` object. * 0.x to 1.x: * Instead of 1-argument callback `.end(function(res){})` use `.then(res => {})`. ## Contributors | Name | | ------------------- | | **Kornel Lesiński** | | **Peter Lyons** | | **Hunter Loftis** | | **Nick Baugh** | ## License [MIT](LICENSE) © TJ Holowaychuk ## [npm]: https://www.npmjs.com/ [yarn]: https://yarnpkg.com/ [jsdelivr]: https://www.jsdelivr.com/ [unpkg]: https://unpkg.com/ [browserify]: https://github.com/browserify/browserify [webpack]: https://github.com/webpack/webpack [rollup]: https://github.com/rollup/rollup

	Stars	Issues	Version	Updated	Created
fetch			1.1.0	8 years ago	13 years ago
isomorphic-fetch	6,956	55	3.0.0	4 years ago	9 years ago
request	25,673	127	2.88.2	4 years ago	13 years ago
superagent	16,537	172	9.0.1	5 days ago	13 years ago
universal-fetch			1.0.0	7 years ago	9 years ago

fetch vs isomorphic-fetch vs request vs superagent vs universal-fetch

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