You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
952 B
60 lines
952 B
3 years ago
|
|
||
|
|
# before
|
||
|
|
|
||
|
|
before decorator factory
|
||
|
|
|
||
|
|
## Installation
|
||
|
|
|
||
|
|
`npm install before`
|
||
|
|
|
||
|
|
## Example
|
||
|
|
|
||
|
|
```js
|
||
|
|
var before = require('before');
|
||
|
|
|
||
|
|
// an object with some method
|
||
|
|
var speak = {
|
||
|
|
greeting: 'welcome',
|
||
|
|
greet: function(a, b, fn){
|
||
|
|
fn(null, a + ' ' + b);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// factory before hook method
|
||
|
|
speak.before = before(speak);
|
||
|
|
|
||
|
|
// before greet
|
||
|
|
speak.before('greet', function(args, fn){
|
||
|
|
args[0] = args[0] + ' to this wonderful';
|
||
|
|
fn();
|
||
|
|
});
|
||
|
|
|
||
|
|
// one more, this will run first
|
||
|
|
speak.before('greet', function(args, fn){
|
||
|
|
args[0] = args[0] + ', ' + this.greeting;
|
||
|
|
fn();
|
||
|
|
});
|
||
|
|
|
||
|
|
// runs mutation hooks, then greets
|
||
|
|
speak.greet('Human', 'world!', function(err, result){
|
||
|
|
console.log(result); // => Human, welcome to this wonderful world!
|
||
|
|
});
|
||
|
|
```
|
||
|
|
|
||
|
|
## API
|
||
|
|
|
||
|
|
### before(context)
|
||
|
|
|
||
|
|
Captures `context` to be used by decorator.
|
||
|
|
|
||
|
|
### before(method, outer)
|
||
|
|
|
||
|
|
Decorates `method` using `outer`.
|
||
|
|
|
||
|
|
`outer` is called with `(args, fn)` to allow
|
||
|
|
arguments mutation.
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
MIT
|