then-request

A request library that returns promises, inspired by request

Installation

npm install then-request

Usage

request(method, url, options, callback?)

e.g.

request('GET', 'http://example.com').done(function (res) {
  console.log(res.getBody());
});

Method:

An HTTP method (e.g. GET, POST, PUT, DELETE or HEAD). It is not case sensitive.

URL:

A url as a string (e.g. http://example.com). Relative URLs are allowed in the browser.

Options:

• qs - an object containing querystring values to be appended to the uri
• headers - http headers (default: {})
• body - body for PATCH, POST and PUT requests. Must be a Buffer or String (only strings are accepted client side)
• json - sets body but to JSON representation of value and adds Content-type: application/json. Does not have any affect on how the response is treated.
• cache - only used in node.js (browsers already have their own caches) Can be 'memory', 'file' or your own custom implementaton (see https://github.com/ForbesLindesay/http-basic#implementing-a-cache).

Callback / Returns:

If a callback is provided it is called with err and res. If no callback is provided, a Promise is returned that eventually resolves to res. The resulting Promise also has an additional .getBody(encoding?) method that is equivallent to calling .then(function (res) { return res.getBody(); }).

Response

Note that even for status codes that represent an error, the promise will be resolved as the request succeeded. You can call getBody if you want to error on invalid status codes. The response has the following properties:

• statusCode - a number representing the HTTP status code
• headers - http response headers
• body - a string if in the browser or a buffer if on the server

It also has a method getBody(encoding?) which looks like:

function getBody(encoding) {
  if (this.statusCode >= 300) {
    var err = new Error('Server responded with status code ' + this.statusCode + ':\n' + this.body.toString(encoding));
    err.statusCode = this.statusCode;
    err.headers = this.headers;
    err.body = this.body;
    throw err;
  }
  return encoding ? this.body.toString(encoding) : this.body;
}

License

MIT