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README.md
request-promise-core
This package is the core for the following packages:
request-promise-core
contains the core logic to add Promise support to request
.
Please use one of the libraries above. It is only recommended to use this library directly, if you have very specific requirements.
Installation for request@^2.34
This module is installed via npm:
npm install --save request
npm install --save request-promise-core
request
is defined as a peer-dependency and thus has to be installed separately.
Usage for request@^2.34
// 1. Load the request library
// Only use a direct require if you are 100% sure that:
// - Your project does not use request directly. That is without the Promise capabilities by calling require('request').
// - Any of the installed libraries use request.
// ...because Request's prototype will be patched in step 2.
/* var request = require('request'); */
// Instead use:
var stealthyRequire = require('stealthy-require');
var request = stealthyRequire(require.cache, function () {
return require('request');
});
// 2. Add Promise support to request
var configure = require('request-promise-core/configure/request2');
configure({
request: request,
// Pass your favorite ES6-compatible promise implementation
PromiseImpl: Promise,
// Expose all methods of the promise instance you want to call on the request(...) call
expose: [
'then', // Allows to use request(...).then(...)
'catch', // Allows to use request(...).catch(...)
'promise' // Allows to use request(...).promise() which returns the promise instance
],
// Optional: Pass a callback that is called within the Promise constructor
constructorMixin: function (resolve, reject) {
// `this` is the request object
// Additional arguments may be passed depending on the PromiseImpl used
}
});
// 3. Use request with its promise capabilities
// E.g. crawl a web page:
request('http://www.google.com')
.then(function (htmlString) {
// Process html...
})
.catch(function (err) {
// Crawling failed...
});
Installation and Usage for request@next
Request Next is still in alpha. However, request-promise-core
is already designed to be compatible and ships with a configuration helper – require('request-promise-core/configure/request-next')
– that is used by request-promise
in its "next" branch.
Contributing
To set up your development environment:
- clone the repo to your desktop,
- in the shell
cd
to the main folder, - hit
npm install
, - hit
npm install gulp -g
if you haven't installed gulp globally yet, and - run
gulp dev
. (Or runnode ./node_modules/.bin/gulp dev
if you don't want to install gulp globally.)
gulp dev
watches all source files and if you save some changes it will lint the code and execute all tests. The test coverage report can be viewed from ./coverage/lcov-report/index.html
.
If you want to debug a test you should use gulp test-without-coverage
to run all tests without obscuring the code by the test coverage instrumentation.
Change History
- 1.1.1 (2016-08-08)
- Renamed package to
request-promise-core
because there where too many issues with the scoped package name@request/promise-core
- Renamed package to
- 1.1.0 (2016-07-30)
- Added
constructorMixin
option to enable request/request-promise#123
- Added
- 1.0.0 (2016-07-15)
- All tests green, ready for prime time
- 1.0.0-rc.1 (2016-07-10)
- Reimplementation of core logic based on
request-promise@3.0.0
- Plus
transform2xxOnly
option (fixes request/request-promise#131)
- Reimplementation of core logic based on
License (ISC)
In case you never heard about the ISC license it is functionally equivalent to the MIT license.
See the LICENSE file for details.