https://github.com/jcblw/js-decorators

a experiment with making js decorators using function mutation
https://github.com/jcblw/js-decorators

Last synced: 16 days ago
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a experiment with making js decorators using function mutation

• Host: GitHub
• URL: https://github.com/jcblw/js-decorators
• Owner: jcblw
• Created: 2013-11-10T07:01:24.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2017-05-12T14:06:19.000Z (over 7 years ago)
• Last Synced: 2024-10-11T14:39:04.800Z (about 1 month ago)
• Language: JavaScript
• Size: 2.93 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
### JS Decorators

Using function mutation. `Warning` this is just an experiment. The performance of this code is probably terrible and might have weird effects in differnt situations. You can find the file in 

```

src / index.js

```

it exposed the Decorate constructor... see below for examples or visit 

```

test / runTest.html

```

#### The Idea

Have JS Decorators similair to python ones, and allow for variable manipulation and a shared private scope between decorators and primary function.

#### Samples 

all arguments passed into a decorated function should be mutatable and should reflect that in the primary fn.

  eg.

```javascript

function decor ( a, b ) {

  a = a + b;

}

function primary ( a, b ) {

  return a;

}

primary = new Decorate( primary, decor );

primary( 1, 2 ); // 3

```

decorators can cancel out fn before it hits the primary fn

```javascript

function decor ( ) {

  return 'im return from a decorator';

}

function primary () {

  return 'im returning the primary stuff'

}

primary = new Decorate( primary, decor );

primary( ); // 'im return from a decorator'

```

variables can be passed from decorator to primary function.

```javascript

function decor ( ) {

  var c = true;

}

function primary ( ) {

  if ( c ) {

    return "C is defined"

  }

}

primary = new Decorate( primary, decor );

primary( ); // 'C is defined'

```