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es6-request

node-es6-request

HTTP Request library written in ES6 for Node.js

Installation

npm install es6-request --save

API

Functions that return a new Request instance:

  • es6-request.get(url)
  • es6-request.put(url)
  • es6-request.post(url)
  • es6-request.head(url)
  • es6-request.patch(url)
  • es6-request.delete(url)
  • es6-request.options(url)
Request
Request.query(key, value)

Alternatively, Request.query(object)

  • key <string> Query string key
  • value <any> Query string value
  • object <Object> Query string key/value object

This function adds to the query string of the url or creates a new query string that will be added to the url before performing the reuqest.

Returns Request

Request.header(key, value)

Alternatively, Request.headers(object)

  • key <string> Header name
  • value <any> Header value
  • object <Object> Header key/value object

Adds a header to the request by the name of key and the content of val or adds the key/value headers from object.

Returns Request

Request.authBasic(username, password)

Adds an Authorization: Basic <token> header to your request.

Returns Request

Request.authBearer(bearer)

Adds an Authorization: Bearer <bearer> header to your request.

Adds options from a key/value object to the Node.js HTTP options.

Returns Request

Request.option(key, value)

Alternatively, Request.options(object)

  • key <string> Option name
  • value <any> Option value
  • object <Object> Option key/value object

Adds an option or a key/value object of options to the Node.js HTTP options.

Returns Request

Request.sendForm(form)

Transforms the form object into a querystring and sends the request as application/x-www-form-urlencoded.

Returns a <Promise>

Request.sendMultipart([form][, files][, filesFieldNameFormat][, encoding])
  • form <Object> Form key/value object (field name/contents)
  • files <Object> Files key/value object (filename/contents)
  • filesFieldNameFormat<string> Multipart file field name (defaults to files[%i])
  • encoding <string> Multipart entity Content-Transfer-Encoding (defaults to utf8)

Transforms the form and files into multipart form fields and sends the request as multipart/form-data.

Returns a <Promise>

Request.sendJSON(data)
  • data <any> Data that will be transformed into JSON

Transforms the data into a JSON string and sends the request as application/json.

Returns a <Promise>

Request.write(chunk[, encoding][, callback])

You must run Request.start() before running this function. Directly writes to the request using this function from Node.js.

Returns Request

Request.send(chunk[, encoding][, callback])

Starts a request, then directly writes to the it using this function from Node.js, then performs the request.

Returns a <Promise>

Request.start()

Starts a request. After this function has been called, helper functions like Request.headers(), Request.header() and Request.query() will no longer work until the request has ended.

Returns Request

Request.pipe(destination)

Starts the request if it is not already started. Pipes the response chunks to the destination stream using this function from Node.js, then performs the request.

Returns Request

Request.perform()

This function ends a request. It is called by other functions like Request.send() and Request.pipe().

Returns a <Promise>

Usage

Simple GET Request

const request = require("es6-request");
 
// you can exchange "get" with "head", "delete" or "options" here 
// they all have the exact same API 
request.get("https://raw.githubusercontent.com/alexrsagen/node-es6-request/master/README.md")
.then(([body, res]) => {
    console.log(body);
    // should output this README file! 
});

POST Request

The following example will send a x-www-form-urlencoded request to the server containing keys and values from the json object.

const request = require("es6-request");
 
// you can exchange "post" with either "put" or "patch" here 
// they all have the exact same API 
request.post("http://api.somewebsite.com/endpoint")
.sendForm({
  somekey: "somevalue"
})
.then(([body, res]) => {
    // ... 
});

This example will send a raw string to the server.

const request = require("es6-request");
 
// you can exchange "post" with either "put" or "patch" here 
// they all have the exact same API 
request.post("http://api.somewebsite.com/endpoint")
.send("i am a string, i will be sent to the server with a POST request.")
.then(([body, res]) => {
    // ... 
});

Query string

This works the same way with any other request type.

const request = require("es6-request");
 
// sends a GET request to http://api.somewebsite.com/endpoint?this=that&one=two&three=four 
request.get("http://api.somewebsite.com/endpoint")
.query("this", "that")
.query({
    "one": "two",
    "three": "four"
})
.then(([body, res]) => {
    // ... 
});

Headers

const request = require("es6-request");
 
// Sends a GET request with these headers: 
// { 
//     "Accept": "application/json", 
//     "Header-Name": "header value", 
//     "Another-Header": "another value" 
// } 
request.get("http://api.somewebsite.com/endpoint");
.header("Accept", "application/json")
.headers({
    "Header-Name": "header value",
    "Another-Header": "another value"
})
.then(([body, res]) => {
    console.log(res.headers);
    // ... 
});

Pipes

The following example POSTs all data you enter to STDIN to the local server we create, which then logs the data back to the console.

const request = require("es6-request");
const server = require("http").createServer((req, res) => {
  req.setEncoding('utf8');
  req.on('data', (chunk) => {
    console.log(chunk);
  });
  req.on('end', () => {
    res.end();
  });
}).listen(1337);
 
process.stdin.pipe(request.post("http://localhost:1337"));

This example pipes the GitHub logo to a file named logo.png.

const request = require("es6-request");
const fs = require("fs");
 
request.get("https://github.com/images/modules/logos_page/GitHub-Mark.png").pipe(fs.createWriteStream("logo.png")).perform();

Multipart forms

The following example POSTs a field and a file to a server using multipart/form-data

const request = require("es6-request");
const fs = require("es6-fs");
 
fs.readFile("logo.png")
.then(contents =>
  request.post("http://api.somewebsite.com/endpoint")
  .sendMultipart({
    somekey: "somevalue"
  }, {
    "logo.png": contents
  }, "files[%i]", "base64")
);

Sample multipart form body that gets sent to the server:

----------------------------151a08730e1f
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: form-data; name="somekey"

c29tZXZhbHVl
----------------------------151a08730e1f
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: form-data; name="files[0]"; filename="logo.png"

iVBORw0KGgoAAAA(trimmed 19073 characters...)
----------------------------151a08730e1f--