delegates
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The "delegates" is a Node method and accessor delegation utility JavaScript package. This npm package allows you to delegate methods and accessors to another property. Delegating parts of behavior to another object is highly useful for maintaining code consistency, reducing redundancy, and enabling better control over levels of abstraction.
To use "delegates", you would first need to install it using npm through the command npm install delegates
. Once the package is installed, you can require it with var delegate = require('delegates');
. The basic syntax for using this package includes calling delegate()
, passing in the object, and the property to which you want to delegate methods and/or accessors. You then chain .method()
, .getter()
, .setter()
, .access()
, and /.fluent()` calls, passing in the names of the methods or accessors you want to delegate.
Here's an example of how you might use it:
var delegate = require('delegates');
delegate(proto, 'request')
.method('acceptsLanguages')
.method('acceptsEncodings')
.method('acceptsCharsets')
.method('accepts')
.method('is')
.access('querystring')
.access('idempotent')
.access('socket')
.access('length')
.access('query')
.access('search')
.access('status')
.access('method')
.access('path')
.access('body')
.access('host')
.access('url')
.getter('subdomains')
.getter('protocol')
.getter('header')
.getter('stale')
.getter('fresh')
.getter('secure')
.getter('ips')
.getter('ip');
In this code, we're delegating several methods and accessors from some proto
object to its request
property.
The documentation for "delegates" is set within the readme file from the GitHub repository. This documentation can be accessed on the project page at git+https://github.com/visionmedia/node-delegates.git. The docs specify how to install and use the package, showing how its methods can be invoked and chained to delegate behavior. They also provide an example use case for the package which can give you some ideas on how to get started with 'delegates.